compressor magazine march 2014

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COMPRESSOR REAL-TIME SOL VING IMPELLER CONTROLS RECIP MODELING RUB PROBLEMS MARCH 2014 GE Buying Cameron’s Recip Line Frigid Winter Tests Gas Industry Dearing’s Marcellus Business Booms WWW.COMPRESSORTECH2.COM

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  • Compressor real-time solving impellerControls reCip Modeling rub probleMs

    March 2014

    GE Buying Camerons recip line

    Frigid Wintertests gas industry

    Dearings Marcellusbusiness boomsWWW.cOMPrESSOrTEch2.cOM

    CT2_March_C1.indd 1 2/19/14 10:58 AM

  • Click on company logo to see ad page

    This issue Driven By

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    CT_March_DrivenBy.indd 1 2/27/14 9:18 AM

  • C O M P R E S S O R S n T U R B I N E S n G L O B A L S E R V I C Ewww.elliott-turbo.com

    The world turns to Elliott.

    n Customers: Global oil and gas producers.

    n Challenge: Changing compression requirements as fields mature and production peaks.

    n Result: Flexible, reliable compressor designs for extended, cost-efficient operations.

    They turned to Elliottfor reliable compression solutions.

    From Aberdeen to Rio de Janeiro, Calgary to Jakarta, Elliott compressors, turbines, and expanders deliver the reliable, efficient performance that producers and processors require. And every piece of Elliott equipment is backed by our unmatched global service network. Customers throughout the world turn to Elliott for critical turbomachinery and service because our resources are global and our execution is local. Who will you turn to?

    Elliott.indd 1 10/23/13 10:56 AM

  • WORLD STANDARDCOMPRESSORS

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    Compressor packages are designed around a compressor. Choose Ariel and have your package designed around the most reliable and best supported compressor available.

    Contact Ariel today through one of our distributors, arielcorp.com, or Ariel7-2Go, and let us help you specify the right compressor for your application.

    Theres A Reason Why Its Called A Compressor Package

    Ariel_CT2_Oct_13_final.indd 1 9/11/13 11:55 AMAriel.indd 1 9/12/13 10:14 AM

  • TechTransfer_CT2.indd 1 2/22/12 9:11 AM

  • TechTransfer_CT2.indd 2 2/22/12 9:11 AM

  • A lot of flack seems to be appearing in the mainstream media of late having to do with redistribution of wealth.

    In my favor, you have to be wealthy in order to be subjected to this seem-ingly appealing exercise of justice to lift up the poor among us. In the process, someone or some bu-reaucracy determines if you have too much or too little. Always, someone who likes to dispose of other peo-ples money makes these decisions. Fortunately, at my level of wealth, I wont have to deal with this ideology. My belief is that it is our right to be wealthy if we so desire to be to keep the fruits of our labor.

    The poor arent poor because Bill Gates and Warren Buffett are rich. Im not sure of the source of this quote, but, Ill give credit to Kathleen Parker, an opinion writer for The Washington Post.

    We adore the rich and famous, pure and simple, and in the end, despite our envy, we grant them their due. History does not reveal any success with the attempt at wealth distribution. On the contrary, the poor remain poor and the wealthy either are lowered to poverty or relocate.

    But, how should we view being rich from a moral perspective? We have been warned that riches are danger-ous, dangerous to the soul and dan-gerous to society. So what should be our attitude towards having wealth, both as it pertains to the very rich and as it pertains to us?

    First, we must never idealize pov-erty and see wealth as a bad thing in itself. Then, we must avoid politi-cizing both poverty and wealth. Our lens must always be moral rather than

    political, though wealth and poverty have huge political implications. The position of wealth is not a bad thing of itself; it is how we use it and what it can do to us as authentic human per-sons that can be bad. There is a huge cavern that separates generosity from miserliness.

    Generally speaking, it is the rich that provide the engine for economic growth through their investments and risk taking. It is through their efforts that society in general progresses and is the best hope for lifting up the bot-tom rung of society. The poor will al-ways be with us and they should be the target of our generosity regardless of our level of wealth.

    Bill Gates Sr. puts it, Society has an enormous claim upon the fortunes of the wealthy. This is rooted not only in most religious traditions, but also in an honest accounting of societys substan-tial investment in creating fertile ground for wealth-creation.

    Government is limited, in my opin-ion, in solving the problem of poverty. It is very inefficient, it doesnt manage its vast economic power very well and try and try as it does from time to time, it always fails in its effort to eliminate poverty.

    On the contrary, depending upon the power of the decision-makers, the wealth-distribution ideology often morphs into despotism if the perpetra-tors arent thrown out of office. History reveals some prime examples of where to gain compliance, a major portion of the population had to be eliminated.

    May the Lord hold you in the hol-low of His hand throughout the rest of 2014. CT2

    Whats Yours Is Yours,Whats Mine Is Yours

    Page4JOe KAneCOMPreSSOrtech2 Founder

    President & CEO ........................ Michael OsengaExecutive Vice President .......Michael Brezonick

    PUBLICATION STAFFCT2 Founder ............................... Joseph KanePublisher ..................................... Brent HaightAssociate Publisher ..............roberto ChelliniEditor ..........................................Patrick CrowExecutive Editor .............................. DJ SlaterSenior Editor ..................... Michael BrezonickSenior Editor ............................. Mike rhodesAssociate Editor ............................... Jack BurkeAssociate Editor ............................Chad elmoreCopy Editor ............................... Jerry KarpowiczDigital Content Manager ...........Catrina BoettnerAdvertising Manager ...................Sarah YildizCirculation Manager ..................Sheila LizdasProduction Manager ................Marisa robertsGraphic Artist ...........................Brenda BurbachGraphic Artist .................................Carla LemkeGraphic Artist ..............................Amanda ryanGraphic Artist ............................... Alyssa Loope

    PUBLICATION HEADQUARTERS20855 Watertown road, Suite 220Waukesha, Wisconsin 53186-1873

    Telephone: (262) 754-4100 Fax: (262) 754-4175

    CONTRIBUTING EDITORSJimmy Patterson - Midland, Texasnorm Shade - Cambridge, Ohio

    Mauro Belo Schneider - rio Grande du Sul, Brazil

    HOUSTON OFFICEBrent Haight, Publisher

    Patrick Crow, editorMike rhodes, Senior editor

    12777 Jones road, Suite 225Houston, Texas 77070

    Telephone: (281) 890-5310 Fax: (281) 890-4805

    GERMAN OFFICELisa Hochkofler, Advertising ManagerGabriele Dinsel, Advertising Manager

    niemllerstr. 973760 Ostfildern, Germany

    Telephone: +49 711 3416 74 0 Fax: +49 711 3416 74 74

    UNITED KINGDOM OFFICEIan Cameron, regional Manager/editorLinda Cameron, Advertising Manager

    40 Premier Avenue Ashbourne, Derbyshire,

    De6 1LH, United Kingdom Telephone: +44 20 31 79 29 79 Fax: +44 20 31 79 29 70

    ITALIAN OFFICESroberto Chellini, Associate Publisher

    44, Via Delle ForbiciI-50133 Firenze, Italy

    Telephone: +39 055 50 59 861 Fax: +39 055 57 11 55roberta Prandi Via Fitta, 21a

    I-38062 Arco, ItalyTelephone: +39 0464 014421 Fax: +39 0464 244529

    SCANDINAVIAN OFFICEBo Svensson, Field editor/Business Manager

    Dunderbacksvagen 20612-46 Finspong, Sweden

    Telephone: +46 70 2405369 Fax: +46 122 14787

    JAPANESE OFFICEAkiyoshi Ojima, Branch Manager

    51-16-301 Honmoku Sannotani, naka-kuYokohama, 231-0824 Japan

    Telephone: +81 45 624 3502 Fax: +81 45 624 3503

    CHINESE OFFICES.H. Mok, Branch Managerrm 1405, Kowloon Building

    555 nathan roadKowloon, Hong Kong

    Telephone: +852 3118 7930 Fax : +852 3110 3572

    COMPRESSORA Member of the Diesel & Gas Turbine Publications Group

    CT346.indd 1 2/21/14 2:26 PM

  • evolving solutions around your world

    critical components

    field services

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    www.c-p-i.com

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  • Featured Articles 16 GE Acquiring Camerons Recip Division 18 Murphy, EControls Assimilation Pays Dividends 22 The Importance Of Motor Dynamics In Reciprocating Compressor Drives 26 Motortech Adds High-End Ignition Controllers 28 Dresser-Rand Makes Major Move Into Gas Liquefaction 32 Custom Packager Strikes Gold In The Marcellus Shale 42 Flowmeter Can Be Sized For Any Engine 62 Recip Compressor Performance, Safety Predictions For Control Panels

    TECHcorner 36 Motor Dynamic Influence On Torsional Vibration Analysis 46 Friction-Surface Coatings In Dry-Running Recips 58 Solving Compressor Impeller Rub Problems During Mechanical Run Tests 76 Case Study: Intake/Exhaust Silencer Redesign Mitigates Noise

    Departments 4 Page 4 Whats Yours Is Yours, Whats Mine Is Yours 8 Global Perspective EOR Could Revitalize Middle Eastern Oil Industry 10 Meetings & Events 12 About The Business Frigid Winter Challenges U.S. Gas Industry 14 Monitoring Government U.S. LNG Exports Remain On The Back Burner 56 Featured Products

    73 Recent Orders 73 Web Headlines

    74 Prime Movers

    84 Scheduled Downtime 85 Marketplace

    86 Advertisers Index

    88 Cornerstones Of Compression The Heart Of The High-Speed Recip

    COMPRESSORDedicated To Gas Compression Products & Applications

    March 2014

    Follow Us @ Compressortech2

    Cover Designed By Alyssa Loope

    MEMBER OF BPA WORLDWIDEPRINTED IN THE U.S.A.

    MEMBER OF

    Compressortech 2 ( ISSN 1085-2468) Volume 19, No. 2 Published 10 issues/year (January-February, March, April, May, June, July, August-September, October, November, December) by Diesel & Gas Turbine Publications, 20855 Watertown Road, Waukesha, WI 53186-1873, U.S.A. Subscription rates are $85.00 per year/$10.00 per copy worldwide. Periodicals post-age paid at Waukesha, WI 53186 and at addi-tional mailing offices. Copyright 2014 Diesel & Gas Turbine Publications. All Rights Reserved. Materials protected by U.S. and international copy-right laws and treaties. Unauthorized duplication and publication is expressly prohibited.

    Canadian Publication Mail Agreement # 40035419. Return Undeliverable Canadian Addresses to: P.O. Box 456, Niagara Falls, ON L2E 6V2, Canada. E-mail: [email protected]. POSTMASTER: Send address changes to: Circulation Man ager, COMPRESSORtech2, 20855 Watertown Road, Suite 220, Waukesha, WI 53186-1873 U.S.A.

    www.compressortech2.com

    CT_March_TOC.indd 1 2/24/14 10:33 AM

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  • MARCH 2014 8 CoMpRessoRtech2

    Advanced enhanced oil recovery (EOR) has not been widely applied in the Middle East due to con-tinuing strong levels of production and the addition-al costs of installing of high-pressure compressors, pumps and other equipment.

    EOR injects associated gas, water, carbon dioxide, steam, etc., underground in order to maintain pressure in the formation and/or fluidize the heavy hydrocarbons to en-able their flow toward the production wells. Not only can this increase the rate of production, but it also can extend the commercial life of the oilfield.

    In some oil-rich nations, the high price of crude and steep depletion rates at giant, mature oilfields have pushed na-tional oil companies to reconsider their investment plans. Oman has somewhat taken a lead in EOR in the region and the United Arab Emirates has implemented a project.

    Qatar is moving forward aggressively. In mid-January, Maersk Oil opened a digital core laboratory in Doha. The facility will put particular focus on researching EOR in car-bonate formations and the marine environment. This should develop better technologies for reservoirs like Maersks Al Shaheen oilfield on offshore Block 5, which is one of the most complex carbonate structures in the world.

    The Middle East is the worlds largest carbonate oil-pro-ducing region. Historically, EOR technologies have been applied to sandstone formations, where they have largely been successful due to the relatively standard porosity throughout the geology. However, it has been challenging to apply the same techniques to carbonate reservoirs as they are generally more naturally fractured than sandstone.

    Fractures in a formation act as conduits to injected water, polymers or steam, often bypassing the target oil zone and reducing the efficiency of the EOR sweep. This research into subsurface chemistry and fluid flow relationships in carbonate structures will be essential to sustaining Qatars longer term oil output.

    Qatars hydrocarbon industry is heavily centered on the re-sources in the largest single deposit of gas in the world, the North Field. However, since 2005, the government has main-tained a moratorium on new developments pending a study on field optimization and the geological impact of gas extrac-tion. The final sanctioned project, the Barzan Gas Project, is due to come on stream in two phases this year and in 2015.

    As a result of reduced oil and gas activity, Business Moni-tor International (BMI) expects Qatars hydrocarbon sector to stagnate and its contribution to the nations economy to continue to decline.

    Despite the slowing investment in Qatars upstream, the country still has plenty to offer. French major Total remains upbeat about prospects offshore Qatar and this year will conduct exploratory drilling with partner China National Off-shore Oil Corp. on Block BC.

    An exploration and production sharing agreement signed with the Qatari government requires at least three explora-tion wells to be drilled this year. The first is due to spud soon, with results expected to be available before the end of the year. Totals efforts could therefore bring welcome upside po-tential to the countrys reserves and production outlook.

    Perhaps of greater importance is Qatars drive to move its oil and gas sector to the forefront of technology. In particu-lar, as Qatars oilfields begin maturing, the nation is placing substantial focus on maximizing production from existing fields and exploring EOR opportunities. Both tactics could make a major contribution to increasing reserves and sus-taining production over a longer period.

    Redevelopment efforts are already underway. Qatar Pe-troleum is budgeting US$13 billion to maximize production from Bul Hanine oilfield. While the project is only expected to add 50,000 bbl/d of output, it will extend production life by 25 years. Increased output is due in 2018.

    Meanwhile, Occidental Petroleum is working on a six-year project to redevelop the Idd El Shargi field after signing an agreement with Qatar Petroleum in mid-2013. The US$3 billion project will add 200 production and injection wells. While the development is not expected to increase produc-tion, it should sustain oil production at around 100,000 bbl/d and extend field life.

    Total is also involved in Qatars production optimization drive. The company secured a 25-year extension to its li-cense at Al Khalij field effective in January 2014. No rede-velopment plans have been announced, but the terms of the new agreement require Total to take additional steps to maximize oil output.

    Because of these efforts, BMI expects Qatari oil produc-tion (including NGLs and other liquids) will be sustained above 1.7 million bbl/d over the next 10 years. CT2

    EOR Could Revitalize Middle Eastern Oil Industry >By ROBERTO CHELLINIASSOCIATE PUBLISHER

    Global Perspective

    Qatar Pushes Ambitious Program

    CT338.indd 1 2/21/14 2:27 PM

  • rolls-royce.com

    Trusted to deliver excellence

    Its all in the name.

    A proud past leads to a new future. There may be a proud old name on the outside, but the driving force within the worlds best-engineered, most efficient, pipeline gas compressors is Rolls-Royce. The heritage name, Cooper-Bessemer, still carried by older machines, echoes the engineering excellence that has earned Rolls-Royce an unparalleled reputation for quality. Today, in a business where productivity and dependability mean so much, the unsurpassed engineering experience of the past makes Rolls-Royce the compressor name of the future.

    Cooper-Bessemer is a registered trade name of Cameron Corporation, used under license by Rolls-Royce plc

    RollsRoyce.indd 1 10/11/13 1:55 PM

  • Meetings & Events*Indicates shows and conferences in which Compressortech2 is participating

    For a complete listing of upcoming events, please visit our website at www.compressortech2.com

    MARCHMarch 19-21*China International Offshore Oil & Gas Exhibition BeijingTel: +86 10 5823 6555

    Web: www.ciooe.com.cn/2014/en

    March 23-27 Sour Oil & Gas Advanced Technology 2014 Abu Dhabi, United Arab Emirates

    Tel: +971 2 674 4040

    Web: www.sogat.org

    March 24-25*Gas Transport & Storage 2014 Berlin

    Tel: +44 20 7202 7690

    Web: www.gtsevent.com

    March 24-27 *Gastech Seoul, Korea

    Tel: +44 203 615 2872

    Web: www.gastechkorea.com

    March 26-27Georgian International Oil, Gas, Energy

    and Infrastructure Conference

    Tbilisi, Georgia

    Tel: +44 207 596 5135

    Web: www.giogie.com

    ApRIlApril 7-9*Gas Compressor Association Expo & Conference Galveston, TexasTel: +1 (972) 518-0019

    Web: www.gascompressor.org

    April 9-10Turkish International Oil and Gas

    Conference 2014 Ankara, Turkey

    Tel: +44 207 596 5147

    Web: www.turoge.com

    April 13-16*Gas processors Association Annual Convention DallasTel: +1 (918) 493-3872

    Web: www.gpaglobal.org

    April 15-16*Gas Compressor Institute Liberal, Kansas

    Tel: +1 (620) 417-1171

    Web: www.gascompressor.info

    April 28-30Black Sea Oil and Gas Forum

    Bucharest, Romania

    Tel: +44 203 615 2988

    Web: www.blackseaoilgas.com

    April 28-May 2*Gulf South Rotating Machinery Symposium Baton Rouge, Louisiana

    Meetings & Events

    March 2014 10 coMpressortech2

    Emission impo ssibleBCD Packing Ring - leading operators and OEMs confirm:

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    Hoerbiger.indd 1 2/17/14 9:18 AM

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  • For a complete listing of upcoming events, please visit our website at www.compressortech2.com

    Tel: +1 (225) 578-4853Web: www.gsrms.org

    MAYMay 5-8*Offshore Technology Conference HoustonTel: +1 (972) 952-9494Web: www.otcnet.org

    May 13-15*Eastern Gas Compression Roundtable Moon Township, PennsylvaniaTel: +1 (412) 372-4301Web: www.egcr.org

    May 13-15Uzbekistan International Oil & Gas (OGU) Exhibition Tashkent, UzbekistanTel: +44 207 596 5144Web: www.oguzbekistan.com

    JUNEJune 3-5*Sensor+Test 2014 Nuremberg, Germany

    Tel: +49 5033 9639 0

    Web: www.sensor-test.de

    June 3-5*Power-Gen Europe 2014 Cologne, Germany

    Tel: +44 1992 656 617

    Web: www.powergeneurope.com

    June 3-6Caspian Oil & Gas 2014

    Baku, Azerbaijan

    Tel: +44 207 596 5000

    Web: www.caspianoil-gas.com

    June 10-12*Global Petroleum Show Calgary, Alberta, Canada

    *Indicates shows and conferences in which Compressortech2 is participating

    Tel: +1 (403) 209-3555

    Web: www.globalpetroleumshow.com

    June 16-20*ASME Turbo Expo 2014 Dusseldorf, Germany

    Tel: +1 (404) 847-0072

    Web: www.asmeconferences.org/

    TE2014

    June 24-26Sensors Expo & Conference

    Rosemont, Illinois

    Tel: +1 (617) 219-8375

    Web: www.sensorsmag.com/

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    June 25-26Energy Exposition Billings, Montana

    Tel: +1 (307) 234-1868

    Web: www.energyexposition.com

    March 2014 11 coMpressortech2

    Emission impo ssible Are you satisfied with the effectiveness

    of your compressor packings?

    Are you happy with leaking gas? Are you satisfied with the durability of

    your packing rings?

    Are you comfortable with the impact your compressor may be having on the

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    Hoerbiger.indd 2 2/17/14 9:19 AM

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  • March 2014 12 coMpressortech2

    An exceptionally cold winter in much of the U.S. has driven increased demand for natural gas.When a polar vortex struck the upper Midwest and Northeast in January, some areas experienced low gas pres-sures and near brownout conditions as pipelines strained to deliver enough gas to heat homes and produce electricity.

    In December, Williams Partners had reported record nat-ural gas flows on its Transco interstate gas pipeline system, driven by demand for home heating and power generation in the eastern U.S.

    Energy Information Administration (EIA) data shows that gas storage levels have been below the recent five-year aver-age since the beginning of January. Since October, net with-drawals from storage in the eastern U.S. slightly exceeded the previous record noted during the 2002-03 heating sea-son. Henry Hub spot prices reached the highest level in four years, hovering in the US$4.50 to US$5.50/MMBtu range since January and spiking to US$7.90 on Feb. 5.

    Despite the surging winter demand, IHS Cambridge En-ergy Research Associates predicted in January that shale production would restrain natural gas prices to the US$4 to US$5/MMBtu range for at least 20 years. Even at the low end of the price range, the report said that about 900 Tcf (2.55 x 1013 m3) of unconventional gas could be economically produced, inferring that significant demand increases can be accommodated without requiring a substantially higher price.

    Ironically, much of the recent high demand and the result-ing strain on the pipeline system have been in the eastern U.S., the region that has developed into the most prolific producer of gas in the nation.

    The EIA reported production from the Marcellus region reached 12 Bcfd (3.4 x 108 m3/d) earlier this year, more than six times the 2009 production rate. If the Marcellus Shale region were a nation, its natural gas output would rank third in the world, after Russia and the rest of the U.S.

    With supplies growing in new shale gas regions, inadequate oil and gas infrastructure continues to cause problems. Those

    infrastructure challenges were discussed during the Gas/ Electric Partnership conference in Cypress, Texas, on Feb. 5-6.

    A presentation by McKinsey & Co. showed 65 gas pipe-line projects under construction, approved, filed or pro-posed in the U.S. Those included a mix of expansions and laterals, principally in the Appalachian region or routes to New England and the Midwest from the Marcellus area (See COMPRESSORtech2, January-February 2014, p. 40).

    Meanwhile, the long-established, long-haul pipelines from the Gulf Coast to the Northeast and Canada are underuti-lized. Some of those may be reversed or converted to liquid or ethane lines.

    McKinsey projects that Appalachian shale gas and associ-ated gas elsewhere in the nation will drive U.S. gas produc-tion through this decade. Large quantities of Marcellus gas will flow out of the Northeast while associated gas from the Bakken Shale in the Williston Basin will increasingly displace Canadian gas that historically has supplied the Midwest market. Volumes from both will potentially flood Chicago and the Gulf South.

    Appalachian production from the Marcellus and Utica will continue to displace gas coming from the southwest.

    A presentation by the Wood Mackenzie consultancy showed that U.S. upstream capital investment, led by oil development, is almost 25% of the global total. It said that by 2020, output of tight oil will grow significantly, with the largest supplies coming from the Eagle Ford Shale, Bakken Shale and Permian Basin.

    This oil production also will boost the gas flow since those shales produce large volumes of associated gas. The pipe-line infrastructure to take away all the Eagle Ford and Bak-ken associated gas currently is insufficient and flaring is prevalent. McKinsey predicts that the Permian gas flow will also be bottlenecked by next year.

    Speakers said conversions and repurposing of gas pipe-lines are proceeding very quickly; new laterals are taking longer. More underground gas storage or local liquefied nat-ural gas storage facilities also may have to be considered to meet power generation demand peaks.

    This burst of production and pipeline growth is driving the need for new compressors as well as the refurbishment and resizing of existing pipeline stations in these regions, all of which is good news for the gas compression industry. CT2

    Frigid Winter Challenges U.S. Gas Industry >By NORM SHADE

    About The Business

    Production growth, new infrastructure driving compression demand

    By NORM SHADE

    Norm Shade is senior consultant and president emeritus of ACI Services Inc. of Cambridge, Ohio. A 44-year veteran of the gas compression industry, he has written numerous papers and is active in the major industry associations.

    CT342.indd 1 2/21/14 2:30 PM

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  • Monitoring governMent

    Energy Departments permitting continues at leisurely pace

    By patrick crow

    U.S. LNG Exports Remain On The Back Burner >

    MARCH 2014 14 CoMpRessoRtech2

    twelve months ago, this column discussed the gla-cial pace in approvals for liquefied natural gas (LNG) export permits at the U.S. Department of Energy (DoE). Little has changed since then, and that of course continues to be the problem.

    the shale gas boom has bestowed ample natural gas and gas liquids supplies upon the nation at bargain pric-es, much to the delight of the chemical industry and other hydrocarbon-intensive manufacturers (who predictably op-pose LNG exports).

    with even greater shale gas production in prospect, en-trepreneurs have proposed a number of projects to export domestic LNG into a thirsty world market. Given the long lead times required to build liquefaction plants, sponsors are clamoring for DoE approvals now.

    So far, the department has cleared six projects in the key category, exports to non-Free trade agreement nations, and about 25 are pending. in the past 12 months, DoE has approved only five permits.

    in reality, all 30 export projects wont go forward. perhaps the market will be able to accommodate a half dozen; may-be a few more. proponents argue thats not the point: DoE should approve the permits and let the market determine which projects bloom in the right place at the right time.

    although associations representing gas producers have been pressing for LNG exports, an ad hoc coalition was launched in February with the same goal objective.

    the our Energy Moment alliance is a convergence of producer associations, businesses and state economic de-velopment organizations. they are mostly based in texas and Louisiana, where much of the surplus gas productivity is pooling.

    the group said LNG exports could generate up to US$47 billion in net benefits to the U.S. economy and create up to 450,000 jobs.

    it said exports would help reduce the U.S. trade deficit by as much as US$27 billion. it argued exports would have little impact on domestic prices, due to the mushrooming supplies now recoverable at low production costs.

    in the House of representatives, the Energy and com-merce committee recently issued a report urging the obama administration to approve all of the pending LNG export applications by the end of the year.

    the report said, our friends and allies around the globe desperately need a more stable, reliable, and affordable supply of natural gas, and american consumers and manu-facturers need continued robust demand to bring additional resources into competitive production.

    this window of opportunity will not remain open indefi-nitely, therefore the committee is urging the Department of Energy to approve all remaining export licenses by the end of the year and is considering legislative action to modern-ize the process and remove barriers.

    committee chairman Fred Upton (r-Mich.) said, in es-sence were sending a friendly shot across the bow for DoE to take it up.

    two key senators seem to be firing shots aimed at the bow. they are Mary Landrieu (D-La.), the new chairman of the Senate Energy and Natural resources committee, and Lisa Murkowski (r-alaska), the senior republican on the panel.

    Landrieu recently ascended to the chair when ron wyden (D-ore.), whose cautious resistance toward gas ex-ports constituted passive opposition, switched to the chair of the Finance committee.

    the Landrieu-Murkowski duo is a washington energy lobbyists fantasy team. Both represent major producing states and hold key positions. over the years, the Senate panel has been the most influential entity in the national energy policy realm.

    Landrieu supports the our Energy Moment gas-export campaign. Murkowski recently issued a white paper urging the administration to lift the ban on crude oil exports and expedite LNG permitting.

    So from outward appearances, it might seem that mo-mentum is building in congress to force faster action at DoE. well, not really.

    the recovery of the U.S. economy is partially due to surge in cheap shale gas production. the obama adminis-tration recognizes that fact and has every incentive to keep natural gas supplies plentiful and cheap, especially with the congressional midterm elections approaching in November.

    No matter what House republicans bluster, nor what Landrieu and Murkowski can push through their energy committee, Senate Democratic leaders can be expected to keep the lid on legislation to expedite LNG exports. Ct2

    ct340.indd 1 2/21/14 2:29 pM

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    Motortech.indd 1 2/11/14 11:13 AM

  • Cameron has agreed to sell its reciprocating compression division to GE Oil & Gas for US$550 million and, at press time, was considering the sale of its cen-trifugal compression business.

    The companys recip business pro- vides reciprocating compression equip- ment and aftermarket parts and serv-ices for oil and gas production, gas processing, gas distribution and inde-pendent power industries.

    The division, which generated sales of about US$355 million in 2012, has 900 employees and operates from 20

    global locations. If U.S. regulatory agen-cies approve, the acquisition is expect-ed to close during the third quarter.

    GE said the acquisition comple-ments GE Oil & Gas existing high-speed reciprocating (HSR) business, which focuses on low-horsepower units that are used predominately in gas lift applications. Camerons recip portfolio will enable the company to offer higher-horsepower models used in gas gath-ering, processing and transmission.

    GE noted that high-speed recips are used in applications from gas gather-ing, gas lift and injection, as well as

    transmission and storage. The devel-opment of shale oil and gas fields, particularly in North America, has increased demand for high-speed re-ciprocating compressors. It said that as shale continues to develop in other regions of the world, such as Asia and South America, the acquisition will po-sition GE to serve the industry globally.

    Lorenzo Simonelli, president and CEO of GE Oil & Gas, said, The new (Cameron recip) business positions GE to more effectively focus on key downstream industry trends and to better anticipate customer needs.

    GE Acquiring Camerons Recip Division > Cameron may sell centrifugal business, too

    BY PATRICK CROW

    march 2014 16 compressortech2

    n Cameron employees assemble Superior compressors at the companys Houston plant.

    CT337.indd 1 2/21/14 3:49 PM

  • march 2014 17 compressortech2

    per year in 1994 to nearly US$20 bil-lion today and profits growing at an av-erage 16% over the past three years.

    Hasan Dandashly, DTS vice presi-dent, said, Camerons reciprocating compression division will become an important part of our downstream of-fering to customers. Its services and geographic presence will expand our distributed gas portfolio and enhance our shale capability and services ex-pertise for our customers.

    In addition to Camerons reciprocat-ing compression division, DTS also will include the newly acquired Salof prod-uct lines of small-scale, modular lique-fied natural gas plants for the rail, ma-rine, trucking and industrial industries.

    In late January, Cameron reported 2013 net income of US$724.2 million, compared to US$750.5 million in 2012. Revenues were a record US$9.8 bil-lion, up 16% from US$8.5 billion in the prior year. CT2

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    Cameron said its after-tax proceeds from the sale would be US$400 mil-lion. The recip business had sales of US$355 million for the year ended Dec. 31, 2012.

    Citi is helping Cameron evaluate options for its centrifugal compression business, which had sales of US$365 million in 2012.

    Jack Moore, Cameron chairman and CEO, said, These actions will streamline the companys operations and are consistent with our strategy of building on our strong sales and order momentum in our core markets while selectively expanding product and service offerings in strategic growth areas. The proceeds from the trans-action will provide us with greater fi-nancial flexibility and afford us the op-portunity to drive additional value for our shareholders.

    Exploring strategic alternatives for the centrifugal compression business is part of our ongoing effort to opti-mize our asset base with a focus on our core markets. We are committed to directing resources to businesses where we have the best opportunities to achieve sales growth, higher mar-gins and market leadership.

    Richard Stegall, president of Cam-erons reciprocating compression divi-sion, said, We have achieved good growth over recent years, and we an-ticipate that this trajectory will contin-ue with the support of GE Oil & Gas.

    Camerons recip operations will be-come part of GE Oil & Gas recently formed Downstream Technology So-lutions (DTS) business, which will supply equipment and services to the US$10 to US$11 billion downstream and distributed gas industry segments including unconventional oil and gas activities.

    Headquartered in Houston, DTS offers technologies and services in-cluding steam turbines, blowers, dis-tributed gas solutions, reciprocating compressors, pumps, valves and dis-tribution systems. The business also provides maintenance services and remote monitoring and diagnostics.

    GE said oil and gas is one of its fastest-growing businesses, with or-ders rising from less than US$1 billion

    CT337.indd 2 2/24/14 4:16 PM

  • The business formed by the 2009 merger of FW Murphy, Tulsa, Oklahoma, and EControls, San Antonio, Texas, has taken the name of Enovation Controls to reflect the now fully integrated company.

    Enovation Controls is positioning it-self as a global provider of engine and engine-driven equipment management and control products and services. The company serves markets that include natural gas compression and liquids, natural gas commercial ve-hicles, off-highway, material handling, recreational and commercial marine, power generation and agriculture.

    The privately held company employs 1000 people worldwide and was on track to exceed US$250 million in rev-enue in 2013. Board member Patrick W. Cavanagh is president and CEO.

    Enovation Controls combines Mur-phys line of controls and instrumen-tation with EControls engine control expertise to go beyond components to a fully integrated engine control and in-strumentation provider, said Frank Mur-phy III, Enovation Controls executive chairman of the board. Murphy added that Enovation Controls would continue to promote and utilize the Murphy and

    EControls brands while strengthening the companys positioning in the market.

    Although we officially merged four years ago, we wanted to be very careful and deliberate with our integration pro-cess in order to make sure we truly pre-served the strengths both companies brought to the table, Murphy said. The Enovation Controls name now repre-sents our fully integrated company as a single, focused team.

    By capitalizing on our synergies, Enovation Controls delivers the same products and services our customers have always known, along with the more fully integrated solutions our markets demand.

    In order to facilitate the companys approach to engine control, protection and monitoring, Enovation Controls is realigning its technical resources into Solution Groups to work more closely with the companys Natural Gas Pro-duction Controls, Display and Power Controls, and Engine Controls and Fuel Systems business segments.

    The goal in creating integrated teams of the companys product de-sign and development engineers is for Enovation Controls to develop and deliver solutions to customers faster

    than its competitors, said Kennon Guglielmo, chief technology officer.

    The Solution Groups are focused on the development of more integrat-ed and tailored solutions for custom-ers, to deliver improvements in engine management, fuel efficiency, reliabil-ity, drivability and emissions.

    A recent example of Enovation Con-trols approach to engine governance is its Engine Integrated Control System (EICS) to optimize emissions compli-ance and performance for natural gas compressors. EICS is a full-authority engine control system that incorpo-rates ignition, air/fuel ratio and speed control along with diagnostics, sen-sors and catalyst into one package de-signed for specific engine models.

    The system includes the companys engine control modules, PowerView displays and related proprietary soft-ware that displays critical engine in-formation. The system is precalibrated to meet emission and performance requirements for the application and typically requires no field calibration or adjustment.

    With the introduction of EICS-equipped engines, customers have

    Murphy, EControls Assimilation Pays Dividends > One example: meshed emissions, performance

    systems for gas compressors

    march 2014 18 compressortech2

    n Enovation Controls Engine Integrated Control System helps companies meet emissions standards as well as optimize performance for their natural gas en-gines driving compressors. The system incorporates everything needed in one high-tech package designed specifically for selected engine models.

    continued on page 20

    CT333.indd 1 2/21/14 3:26 PM

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    Today, we are producing a broad range of natural gas power and our dual fuel engines provide seamless transitions from diesel fuel to dual fuel operation. Visit cumminsengines.com to see how we could help you make the move to economical and reliable natural gas.

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  • experienced short installation times with improved engine performance and fuel economy in the presence of load swings and changes in natural gas well flow, said Terry Baldwin, vice president of the Natural Gas Produc-tion Systems segment. Baldwin said EICS ability to monitor all integrated system components could simplify troubleshooting and reduce engine downtime while enabling customers to meet emissions regulations.

    Our customers are reporting a 20 to 30% savings in fuel and operating costs by utilizing the EICS system, Baldwin said, adding that over 1500 natural gas compressors have been retrofitted with the EICS.

    In addition to EICS, the merger has resulted in other synergies. EControls electronics manufacturing capabilities, which include in-house, surface-mount assembly lines, electronic quality-inspection equipment and direct re-lationships with electronic parts sup-pliers, are now used to improve the quality, cost and lead time of Murphy- branded products.

    Enovation Controls has used this combination of capabilities to launch a generation of PowerView color and monochrome displays with new capa-bilities and price points.

    Another benefit of the merger, Mur-phy said, is that Enovation Controls has taken engine control module de-signs from EControls and transformed them into general-purpose controllers and I/O modules for off-highway and marine applications. These new mod-ules have been combined with the next

    generation PowerView displays to form a package that is designed to work as a single system. The customer also can program these components as a single integrated system by using the proprietary PowerVision Configuration Studio development software.

    The combination of intellectual prop-erty from the two companies is also yielding value for Enovation Controls customers, Guglielmo said. The inte-gration of the engine control, vehicle systems and dashboard displays can yield performance advantages that a collection of components from a vari-ety of vendors cannot match, he said. The ability to cross over the boundary between vehicle systems and engine control is a unique Enovation Controls capability; a capability made possible by the merger.

    Some of Enovation Controls most promising growth opportunities are

    in providing control and fuel system solutions for natural gas powered ve-hicles, Guglielmo said.

    Of the more than 1 million engine control systems Enovation Controls has shipped to date, more than 170,000 are found on heavy-duty natural gas fu-eled buses and trucks. Guglielmo said Enovation Controls expects the num-ber of natural gas-powered vehicles to grow significantly in the U.S., China and worldwide.

    To that end, Enovation Controls has invested in the relocation and significant upgrades of its engine development fa-cilities in San Antonio. It is spending an-other US$4 million (in addition to more than US$15 million already invested in China) in an engine development cen-ter in Hangzhou, China, that is sched-uled to open at midyear.

    With these investments, Enovation Controls will be positioned to support the expected growth in the natural gas vehicle sector. The company has sales and manufacturing facilities in North America, China, Europe and In-dia, and said it will continue to expand and invest its international operations.

    At Enovation Controls, were lever-aging our synergies in order to expand our offering so that more customers can experience the benefits of a total engine control and instrumentation solution, Cavanagh said. However, we remain committed to providing our customers with the quality and service that earned us the business in the first place. CT2

    march 2014 20 compressortech2

    n The EControls manufacturing and assembly operations in San Antonio, Texas, have been expanded and upgraded.

    n China is a major target for Enovation Controls global marketing effort. It has an application engineering and sales operation in Shanghai and will expand its plant at Hangzhou, shown above, at midyear.

    CT333.indd 2 2/21/14 3:26 PM

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  • Investments in further developing the North American natural gas supply continued at a strong pace in 2013. Major investments are being made to process, transmit and store the new gas supplies.

    The need for highly accurate torsion-al analyses to produce the most reli-able drivetrain is paramount to achiev-ing best-in-class uptime.

    The use of electric motor-driven

    compression continued to increase 2013, a trend which is primarily being driven by availability of electricity, cost of electricity, emissions regulations and the strategies of end users.

    When utilizing motor-driven drive-trains, proper torsional dynamics and system analysis should lead to:

    improved uptime due to much lower maintenance time,

    improved uptime due to decreas

    ed torsional issues coupling alignment, resonance and vibra-tion alarms,

    improved uptime due to increased equipment reliability.

    The following technical summary is based on a presentation that Gerhard Knop, head of development projects for Neuman & Esser (NEA), made at the 2012 International Rotating Equipment Conference in Dsseldorf, Germany. The paper reviewed the analysis and decisions that NEA takes to ensure that torsional designs for motor driven appli-cations minimize unforeseen downtime.

    The impact of using a motorBecause of their enormous torque

    variations, reciprocating compressors introduce torsional vibrations into the drivetrain that must be thoroughly

    The Importance Of Motor Dynamics In Reciprocating Compressor Drives > Exacting torsional analyses can ensure reliable drivetrains

    By SWAMy SuBRAMANyAM AND GERhARD KNop

    Swamy Subramanyam is vice president of technical management and procurement at Neu-man & Esser USA Inc. He holds a masters degree in mechanical engineering and has more than 20 years of experience in compressor application engineering and design of reciprocating gas compressor packages and associated equipment. He is a mem-ber of the GMRC Torsional Analysis subcommittee. Contact him at: ssubramanyam@ neuman-esser.com. Gerhard Knop is head of development projects at the Neuman & Esser Machine Factory in bach-Palenberg, Germany. He has more than 18 years of experi-ence in numerical and analytical calculations, with a focus on drivetrain vibrations. He is member of the GMRC Torsional Analysis sub-committee and has a Dipl.-Ing.(FH) degree in mechanical engineering. Contact him at: [email protected].

    march 2014 22 compressortech2

    n NEAs products, including this 10,500 hp (7.8 MW) compressor train for natural gas storage, all undergo detailed torsional analy-ses, including motor dynamics.

    continued on page 24

    022.indd 1 2/21/14 4:04 pM

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    Prognost.indd 1 6/7/13 11:42 AM

  • investigated by simulation before these machines are put into opera-tion. In recent years, but interestingly, sometimes even today, the reacting torque of the driving induction or syn-chronous motor was considered to be constant at steady-state operation.

    This assumption most often leads to completely incorrect shaft torque dynamics and gives no information on electric current fluctuations. Both quantities, however, are the key de-sign features of a drivetrain (API 618, paragraphs 7.1.1.7 and 7.1.2.6).

    Torque dynamics must be limited in order to:

    avoid coupling overloading or early rubber wear,

    avoid shaft fractures, avoid rotor and stator mechanical

    overloading.Electric current fluctuations must be

    limited to: avoid excessive loading and flicker, avoid thermal overloading of the

    frequency converter, semiconductor malfunction.The motor reactions on torsional vi-

    brations can create highly amplified or attenuated shaft torque variations. This diverse behavior was modeled with a focus on induction motors, which are much more frequently used than syn-chronous motors.

    Why to consider motor dynamics in drivetrain simulations

    The introduction of motor dynamics into the drivetrain simulation is increas-ingly important and requires precise calculations and sophisticated simula-tion models for the following reasons:

    Higher compressor rotational speeds are being used, which in-creases the probability of torsional resonances.

    The use of speed controls contin-ues to increase, which results in resonant conditions that need to be properly investigated.

    Improved drivetrain simulations allow reduction of flywheel size and weight, which reduces com-pressor main bearing load, crank shaft bending load and lateral vi-bration tendency.

    More complete and sophisticated drivetrain simulations lead to in-creased reliability. It should be noted that the number of coupling or shafting failures due to com-plete simulation models (with mo-tor dynamics) has gone down to practically zero.

    Motors react on torsional vibra-tions. If the torque of the compres-sor were constant, the motor air gap torque would be constant as well. However, the fluctuating compressor torque produces angular deflections of the rotor within its magnetic field and causes the motor air gap torque to change its height.

    The resulting motor air gap torque variations represent an external exci-tation, similar to compressor torque, and influences the torsional vibrations of the drivetrain.

    The coupling type has an immense effect on the motor air gap torque which reduces or increases torsional vibra-tions and shafting torque load depend-ing on the given drivetrain configuration.

    Soft coupling and motor two friends

    The most amazing influence on the torsional vibration behavior of the motor dynamics can be observed at drivetrains being equipped with high flexible (rubber in shear type) cou-plings. When properly chosen, they would even attenuate the shaft torque loading to an almost constant value.

    Negative dampingWhen using all-steel disc couplings,

    which are quite rigid, advanced ana-lytical design approaches reveal that coupling and motor shaft torque varia-tions go up significantly without much external excitation.

    Whether during start-up or steady-state, these self-induced vibrations are driven by feedback of the motor.

    Where positive damping results in attenuation of vibrations in resonance near condition, negative damping would amplify the vibrations due to unfortunate phase shift between exci-tation and vibration.

    Variable-frequency drivesIf a frequency converter is used, the

    motor air gap torque is affected by the respective frequency converter con-trol methods. The options are:

    Control of motor current fluctua-tions. In this case, the motor air gap torque is smoothened in the same way as the motor current. If the control is fast enough, the be-havior approaches that of a con-stant motor air gap torque.

    Control of the rotational speed fluc-tuations. In order to reduce speed variations, the motor air gap torque must vary accordingly. Therefore, smooth speed is achieved by vary-ing current and shaft torque.

    Setting the control very slow so that no fluctuations are controlled down. In this case the motor be-haves in the same way as if con-nected directly to the main power network, only with different fre-quency and voltage supply.

    As with connecting directly to the main power network, for variable- frequency drive (VFD) drives it is

    march 2014 24 compressortech2

    n This cutaway drawing shows a high flexible (rubber in shear) coupling.

    CT335.indd 2 2/21/14 4:08 PM

  • march 2014 25 compressortech2

    not only the dynamic shafting torque but also the motor electric current fluctuations that have to be considered dur-ing the drivetrain design.

    ConclusionsIt could be demonstrated that the motor dynamics rep-

    resent the major influence on the torsional vibrations of drivetrains especially on the shaft torque loading and on electric current pulsations.

    The inclusion of motor dynamics in drivetrain simula-tions has increased equipment reliability. This has be-come even more important today, as modern compressor installations provide a stronger demand on calculation accuracy, due to better strength utilization. Therefore, the motor electromagnetics should always be included into the calculations.

    When using torsionally soft couplings, the torque loading value can become quite low due to the motor reaction. Motor and soft coupling represent a very good combination and pro-duce robust systems that show only small torque pulsations at coupling and shafts.

    When torsionally rigid couplings like all-steel, disc-type couplings are used, self-induced vibrations may occur with sometimes harmful amplitudes. The resulting shaft and coupling torque variations can be multiples of the calculated values due to the false assumption of constant motor torque.

    At VFD, the frequency converter control method must be thoroughly chosen in order to promote or reduce the mo-tor magnetic field influence, depending on the individual requirements.

    As a compressor and motor can only be simulated in a single combined model, compressor manufacturers must un-derstand the dynamic motor behavior, allowing them to opti-mize the drivetrain on every relevant aspect such as proper motor inertia, coupling, flywheel and crankshaft designs.

    Neuman & Esser has developed expertise in evaluat-ing motor dynamics for drivetrain simulations (especially motor electromagnetic characteristics), increasing the reli-ability of high-pressure reciprocating compressors used in gas applications. CT2

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    CT335.indd 3 2/21/14 4:06 PM

  • Motortech has extended its range of high-end ignition con-trollers with two new series.They are the MIC3, which has 12 ig-

    nition outputs and 200 mJ of primary energy for small and mid-sized gas engines, and the MIC5 with 20 ignition outputs and 500 mJ primary energy for engines with up to 670 hp (500 kW).

    The Celle, Germany-based com-pany said that high ignition energy, accurate spark timing and diversified online diagnostics can combine to improve engine efficiency, spark plug life and availability of the equipment under the strict emissions regulations. The controller is fully customer con-figurable via a laptop.

    Motortech has also extended its VariFuel2 air/fuel ratio mixer series with two new sizes to cover, or re-spectively overlap, a greater range of application areas.

    The main task of the gas mixer is to mix the fuel (gas) and air so that the gas engine achieves optimal combustion.

    The VariFuel2 is a high-tech, vari-able Venturi-type mixer that can con-stantly adjust to any fuel changes. It allows the engine to operate at its most efficient point.

    Series 100,140, 200 and 250 Vari-Fuels are available for engines with an air requirement up to 176 Mcfh (5000 m3/h).

    Coupled to an air/ fuel ratio control-ler, lean-burn or stoichiometric, it pre-cisely regulates the mixture and, ac-cording to the company, is suitable for applications with constant changes in the calorific value of fuel.

    It can be used with nearly all gas types, including natural, biogas, land-fill, sewage, wood, wellhead or mine and it employs a high precision step-per motor drive with a reprogramma-ble controller board called VariStep.

    Various flow bodies and flexible in-let and outlet configurations allow fully flexible cross section adjustment.

    Motortech said the decisive optimi-zation parameters are a high degree

    of efficiency and low emissions that comply with relevant regulations.

    In the VariFuel2, gas and air are mixed based on the Venturi effect. Based on the suction vacuum of the engine, the air is sucked through the air inlet into the Venturi nozzle.

    The Venturi effect produces an un-derpressure at the narrowest point, sucking the gas in through the gas inlet. This way, gas and air are mixed and re-leased at the Venturi outlet. Based on different design sizes and different flow bodies in the Venturi nozzle, it is pos-sible to achieve various volume flows.

    Another recent Motortech prod-uct launch was a handheld device to support gas engine mechanics who are trouble shooting engine problems or going through preventive mainte-nance procedures. SparkView moni-tors the high voltage required by the spark plug when firing.

    To see a video of the SparkView application, go to: www.youtube.com/watch?v=YcC94wnhzQc. CT2

    Motortech Adds High-End Ignition Controllers > It also expands offerings of fuel mixers

    BY IAn CAMeron

    n This is a grouping of VariFuel2s available from Motortech.

    MARCH 2014 26 CoMpRessoRtech2

    CT316.indd 1 2/24/14 2:11 PM

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  • Dresser-Rand has announced the successful operation of its newly developed small-scale liquefied natural gas (LNG) production system, named LNGo.

    We are very excited about this technology for small-scale LNG pro-duction, which allows for very small stand-alone plants that are portable and can be moved to support chang-ing requirements and needs, Presi-dent and CEO Vincent Volpe Jr. said. The standard LNGo plants are sized to produce approximately 6000 gal-lons (22,712 L) of LNG per day.

    Dresser-Rand designed, construct-ed and commissioned its demonstra-tion plant, which in December reached a milestone with the initial production of LNG. Now, extended performance and endurance tests are being per-formed as the final step prior to full market release.

    According to Charles Ely, general manager of midstream SBU, the LNGo

    system operates on the open-loop methane concept. The process is iden-tified as a methane letdown cycle.

    The process module contains a me-chanical chiller, turboexpander, Joule-Thomson valve, stainless-steel, brazed welded plate heat exchangers and liq-

    uefaction process piping to drop the pressure and reduce the temperature of the natural gas.

    The first phase of cooling is ac-complished by the mechanical chiller, which uses an ammonia refrigerant loop and evaporative cooler. The in-tegrated ammonia chilling system consists of an evaporative condenser and screw compressor that removes the heat of compression from the methane prior to expansion. The ad-vantage of this first stage is lower cost and smaller footprint.

    The second phase of cooling is ac-complished with the turboexpander. The expander wheel uses variable in-let guide vanes to control inlet gas flow and maximize efficiency, and is fitted with a gas seal and anti-surge control systems to assure reliable operation. Final subcooling is accomplished with a Joule-Thomson valve that rapidly expands natural gas and reduces tem-perature to below -250F (-157C). It is used to supply the final cryogenic heat exchanger with cooling medium.

    The conditioning module, also known as the molecular sieve, cleans and

    Dresser-Rand Makes Major Move Into Gas Liquefaction > Tests completed for small-scale LNG production system

    By JOE KANE

    n The compressor module contains a four-throw Dresser-Rand 7MOS4TM reciprocating com-pressor to provide all stages of compression and the interconnecting pipe to the process module.

    MARCH 2014 28 CoMpRessoRtech2

    continued on page 30

    n The LNGo system is shown with three-dimensional CAD software created by the development team at Painted Post, New York.

    CT345.indd 1 2/25/14 2:15 PM

  • Kilowatts.indd 1 10/23/13 11:01 AM

  • n The liquefaction process module does all the cooling and subcooling of the natural gas in the system.

    sep arates the incoming gas into two streams. The product stream, now free of H2O or CO2, is fed to a Dress-er-Rand MOS compressor to begin the liquefaction process. The purge stream is essentially a waste stream that contains H2O, CO2 and heavier hydrocarbons that are not permis-sible for making LNG. It is blended with makeup natural gas and used to fuel the Guascor engine, avoiding ad-ditional gas treatment or cleanup.

    The power module contains a Dresser-Rand Guascor, 16-cylinder, four-cycle, turbocharged and after-cooled, rich-burn engine (rated 870 kW at 1800 rpm and bmep of 151 psi or 10.4 bar). Bore and stroke are 6.3 x 6.9 in. (160 x 175 mm) giving a displacement of 3436 cu. in. (56.35 L) and a compression ratio of 9.3:1. Rat-ed emissions are 0.1/0.2/0.2 g/bhph (0.13/0.27/0.27 g/kWh) for NOx/CO/HMHC. A fan-driven ambient air cooler is used to cool engine jacket and lube oil circuits. Dresser-Rands Enginuity PLC-based control system serves both the power module and the LNGo pro-cess. The power module also contains the motor control center (MCC).

    With an engine configured to han-dle natural gas within a lower heating value (LHV) range of 800 to 1150 Btu/cf (29,800 to 42,870 kJ/m3), the power module provides power for the entire LNGo system. Fuel gas is a blended mixture of mole sieve purge (waste) gas and feed natural gas.

    The compressor module satisfies all four stages of gas compression re-

    quired by the LNGo liquefaction system.Dresser-Rands four-stroke model

    7MOS4 reciprocating compressor has a 7 in. (172 mm) stroke and bore sizes (C1/C2/C3/C4) of 10.5/10.5/17.5/11.5 in. (267/267/444.5/281.6 mm). Com-pression ratios of the four stages are (C1/C2/C3/C4): 3.25/3.5/2.74/2.85. The compressor features Dresser-Rands Magnum XF series valves for proven combination of efficiency and durability in high-pressure ratio applications.

    It uses nonlubricated cylinders to avoid process contamination and elim-inate lube oil consumption. A water- glycol coolant is used to cool compres-sor cylinders, rod packings and the crankshaft and rod bearings lube oil is fed by a mechanically driven pump during normal operation and electric motor-pump during start-up.

    The compressor is driven by a 12-pole, three-phase WEG induction mo-tor rated for 750 hp (559 kW) at 480V. It includes VFD with harmonic filter.

    Our development process began in earnest less than one year ago, Volpe said. In this time frame, our or-

    ganization has taken the process and designed, built and commissioned an entire plant, with a target capacity of 6000 gpd (2.2 kpd). This development cycle time to market is amazingly short, and is a tribute to our internal processes, as well as to the men and women of our development team, and our Painted Post, New York, opera-tions. We are proud of our people and their outstanding efforts.

    On the commercial side, the com-pany has been talking to potential clients for several months. Depend-ing upon the nature of the applica-tion, these potential opportunities are broadly classified as modules that would either be for sale or for lease.

    For direct sale, Dresser-Rand pro-vides the liquefaction process and associated ancillary gas processing equipment, a power module and full turnkey installation and commissioning.

    Dresser-Rand currently offers the LNGo system for direct sale but is evaluating other market strategies such as rental or lease options with market channel partners.

    For all users, Dresser-Rand can pro-vide full turnkey installation and com-missioning services, as well as routine operations, monitoring and mainte-nance contracts to ensure ongoing re-liable and available operations.

    Upstream applications include, among others, the monetization of flared gas to increase revenues for oil companies and reduce their en-vironmental impact, the production of stranded natural gas fields that are not close to existing pipeline in-frastructures, on-site fuel supply for

    MARCH 2014 30 CoMpRessoRtech2

    n Dresser-Rands Guascor generator set takes natural gas and converts it into electrical energy for the rest of the system to operate.

    CT345.indd 2 2/25/14 2:20 PM

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    drilling and hydraulic fracturing equip-ment converted to run on LNG and applications for coal bed methane for fueling mining vehicles. Downstream applications include the production of vehicle-grade LNG, allowing LNG to compete effectively with diesel fuel on a cost-per-energy-content (Btu) basis.

    As LNGo plants enable the distrib-uted production of LNG on a small scale, the technology eliminates the need for the costly trucking of LNG

    long distances from large, central-ized plants to LNG fueling depots, as is the practice today. Further, Dresser-Rand believes that its ap-proach to short cycle time will enable LNGo plants to be installed and op-erating in months rather than years. The short cycle times will allow own-ers to see quick returns on their in-vestment, as well as matching the supply and demand of LNG as local markets develop.

    Driven by rapidly expanding global shale gas development and continued price differentials between natural gas and oil, Dresser-Rand predicts that the market for distributed, small-scale LNG production plants will grow from early adopters in North America to a broad, robust market for users around the world. North America is the most rapidly growing market. The substantial price disparity between diesel fuel and low-priced natural gas has oil-field service operators, oil and gas companies, shipping and deliv-ery companies, and downstream fuel distributors/marketers across the region converting drilling rigs, industri-al mining equipment, transportation fleets and retail fueling stations along the United States interstate highway system to LNG fuel.

    Dresser-Rand said orders booked for LNGo in the next several months will convert to shipments in 2014. As those units are placed into service and gain operating experience and runtime, the company expects the incoming stream of orders to grow over time. CT2

    n A simple schematic representation of the process shows the progress from input natural gas to the output of LNG.

    CT345.indd 3 2/21/14 5:41 PM

  • Richard (Rick) H. Dearing Jr., the current president and grandson of the founder, joined the company in 1985 af-ter receiving petroleum engineering and MBA degrees. Rebecca Dearing Wall is the executive vice president, chief fi-nancial officer, sister and co-owner with Rick. She joined the company in 1981.

    The company has grown steadily since we purchased it from our father in 1996, Dearing Wall said. Dearing is established as a leader in the engi-neering, packaging and installation of quality compressor equipment.

    Rick Dearing said until about 2005,

    packages in the 100 to 300 hp (75 to 224 kW) range were common, and 500 hp (373 kW) was a big unit for the com-pany. But customers demanded that we be able to do it all or we wouldnt get any of their other business, so we kept expanding to larger and larger units, Rick Dearing said.

    Until August 2006, Dearing operated in a 26,000 sq.ft. (2416 m2) facility with limited crane capacity. A 10,000 sq.ft. (929 m2) expansion helped the Appala-chian Basin packager continue several years of steady growth. And then the Marcellus Shale emerged. Business

    n Dearings plant has eight fabrication bays with 180 tons (163 tonnes) of crane capacity and is being expanded to 12 large bays in 2014. The large package in the foreground includes a Waukesha 9390 gas engine, Ariel JGD/4 inlet gas compressor, and AXH air cooler.

    MARCH 2014 32 CoMpRessoRtech2

    Dearing Compressor and Pump Co. of Youngstown, Ohio, has found itself in the right place and the right time to supply the Marcellus and Utica shale plays.

    Albin P. Dearing III, who sold and serviced Gardner Denver industrial air compressors, formed Dearing in 1945. The family owned companys introduc-tion to the oil and gas business came in 1960 by working on Gardner Denver oil rigs and compressors. This later led to an expansion into the natural gas compressor market within Ohio.

    Dearing Compressor has served the Appalachian Basin since 1945

    BY NORM SHADe

    Custom PackagerSTRIkeS GOlD

    In The Marcellus Shale

    CT341.indd 1 2/21/14 4:20 PM

  • COMPRESSORDedicated To Gas Compression Products & Applications

    PACKAGER GUIDE2014www.compressortech2.com

    CT2_PackagerGuide_2014.indd 1 2/24/14 2:20 PM

  • Establishing a comprehensive listing of compressor packagers, their locations and package capacity ranges is an important service to the end users of this equipment. This addition of our services to the industry is based on several inquiries we received regarding compressor packagers. A listing of packagers follows, along with contact information, types of compressors offered and the capacity range of the packages they produce. An important note if your company is missing from this listing, please let us know, as it will be updated on a regular basis.

    COMPRESSORDedicated To Gas Compression Products & Applications

    AG Equipment Co., Broken Arrow, Oklahoma. Principal contact: Kent Bright. E-mail: [email protected]. Types of compressors: reciprocating and rotary screw. Capacity range: 20 to 10,000 hp (15 to 7456 kW).

    ANGI Energy Systems LLC, Janesville, Wisconsin. Principal contact: Jared Hightower, vice president, domestic CNG Sales. E-mail: [email protected]. Types of compressors: reciprocating and rotary screw. Capacity range: 40 to 800 hp (30 to 597 kW).

    Abby Services Inc., Canonsburg, Pennsylvania. Principal contact: Don Fulmer, president. E-mail: [email protected]. Types of compressors: rotary screw, reciprocating, liquid rings and blowers. Capacity range: 3 to 500 hp (2 to 373 kW).

    ABC Compressors, Eibar, Spain. Principal contact: Javier Cuevas. E-mail: [email protected]. Types of compressors: reciprocating. Capacity range: 70 to 1600 hp (50 to 1200 kW).

    Alegacy Equipment, Waller, Texas. Principal contact: Bo Pierce. E-mail: [email protected]. Types of compressors: reciprocating. Capacity range: 30 to 400 hp (22 to 298 kW).

    Arrow Engine Co., Tulsa, Oklahoma. Principal contact: Terry Kerbo, general manager, compression. E-mail: [email protected]. Types of compressors: reciprocating. Capacity range: 25 to 300 hp (19 to 224 kW).

    Bidell Gas Compression, Calgary, Alberta, Canada. Principal contact: Mat Clark, vice president, sales and applications. E-mail: [email protected]. Types of compres-sors: reciprocating and rotary screw. Capacity range: up to 10,000 hp (7456 kW).

    Brahma Compression, Calgary, Alberta, Canada. Principal contact: Phil Me-loche, sales. E-mail: [email protected]. Types of compressors: blow-ers, vane and rotary screw. Capacity range: 5 to 400 hp (4 to 298 kW).

    Cameron, Houston. Principal contact: Mike Gerzina. E-mail: [email protected]. Type of compressor: reciprocating. Capacity range: 148 to 9000 hp (110 to 6711 kW).

    Cobey Inc., Buffalo, New York. Principal contact: Eric McKendry, director of mar-keting and sales. E-mail: [email protected]. Types of compressors: recipro-cating, screw, centrifugal, axial, with expanders and turbine-generator sets, lube oil systems. Capacity range: up to 30,000 hp (22,065 kW).

    Comoti Romanian Research and Development Institute for Gas Tur-bines, Bucharest, Romania. Principal contact: Marius Teodorescu, marketing and sales manager. E-mail: [email protected]. Types of compressors: ro-tary screw, centrifugal and blowers. Capacity range: 30 to 2448 hp (22 to 3280 kW).

    Com-Pac Systems Inc., Odessa, Texas. Principal contact: Jack Motley, president. E-mail: [email protected]. Types of compressors: rotary vane, rotary screw, and reciprocating. Capacity range: 25 to 4000 hp (19 to 2983 kW).

    Compass Compression Services Ltd., Calgary, Alberta, Canada. Principal contact: Scott Douglas, vice president, sales. E-mail: [email protected]. Types of compressors: reciprocating, rotary screw and vane. Capacity range: 5 to 8000 hp (4 to 5965 kW).

    Compressor Systems Inc., Midland, Texas. Principal contact: Hank Sheeran, vice president, sales. E-mail: [email protected]. Types of com-pressors: reciprocating and screw. Capacity range: 26 to 8500 hp (19 to 6338 kW).

    ConPackSys, Dordrecht, Netherlands. Principal contact: Michel Bezemer. E-mail:

    [email protected]. Type of compressors: reciprocating. Capacity range: 44 to 9383 hp (33 to 7000 kW).

    Custom Compression Systems, New Iberia, Louisiana. Principal contact: Bob Carter. E-mail: [email protected]. Type of compressors: reciprocating. Capacity range: 95 to 5000 hp (71 to 3728 kW).

    Dearing Compressor & Pump Co., Youngstown, Ohio. Principal contact: Rich-ard H. Dearing Jr., president. E-mail: [email protected]. Types of compres-sors: rotary screw, reciprocating, blowers and liquid ring. Capacity range: 30 to 8000 hp (22 to 5965 kW).

    Dresser-Rand, Houston. Principal contact: Colman DeJong, VP of sales The Americas. E-mail: [email protected]. Type of compressors: centrifugal, reciprocating. Capacity range: 20,100 to 181,000 hp (15,000 to 135,000 kW).

    Elliott Co., Jeannette, Pennsylvania. Principal contact: Tom Brown, marketing manager. E-mail: [email protected]. Type of compressors: centrifugal. Ca-pacity range: 10,000 to 120,000 hp (7456 to 89,500 kW).

    Enerflex Ltd., Calgary, Alberta, Canada. Principal contact: Trevor Hunt, manager, Sales, Compression and Process. E-mail: [email protected]. Houston, Texas. Principal contact: Peter Kourkoubes, manager, Sales, USA and Latin America. E-mail: [email protected]. Types of compressors: reciprocating and rotary screw. Capacity range: up to 10,000 hp (7456 kW).

    Enerproject SA, Mezzovico, Switzerland. Principal contact: Vito Notari, sales manager. E-mail: [email protected]. Types of compressors: centrifugal, rotary screw and rotary vane. Capacity range: up to 4024 hp (3000 kW).

    Euro Gas Systems SRL, Targu Mures, Romania. Principal contact: Roger Wachter, general manager. E-mail: [email protected]. Types of compressors: reciprocating and rotary screw. Capacity range: 100 to 5000 hp (75 to 3728 kW).

    Exterran Compression, Houston. Principal contact: Susan Nelson, marketing/communications. E-mail: [email protected]. Types of compressors: re-ciprocating and rotary screw. Capacity range: 250 to 9000 hp (186 to 6710 kW).

    FIMA Maschinenbau GmbH, Obersontheim, Germany. Principal contact: Mi-chael Loercher, sales engineer. E-mail: [email protected]. Types of compressors: centrifugal and seal-less. Capacity range: 10 to 6800 hp (8 to 5000 kW).

    Flatrock Compression Ltd., Houston. Principal contact: Brian McDonald, presi-dent. E-mail: [email protected]. Type of compressors: re-ciprocating. Capacity range: 26 to 500 hp (19 to 373 kW).

    Flogistix, Oklahoma City. Principal contact: Drake Andarakes, vice president of sales and marketing. E-mail: [email protected]. Type of compressors: rotary screw. Capacity range: 20 to 800 hp (15 to 597 kW).

    GEA Refrigeration Italy, Castel Maggiore, Italy. Principal contact: Ivano Cama-ggi, president, Power Technology Center. E-mail: [email protected]. Type of compressors: screw, reciprocating and centrifugal. Capacity range: up to 13,412 hp (10,000 kW).

    GE Oil & Gas, Florence, Italy. Principal contact: Sara Hassett, Communications Leader. E-mail: [email protected]. Type of compressors: centrifugal and axial compressors; integrated electric motor driven compressors; reciprocating and high- speed reciprocating compressors; gas and steam turbines, turboexpanders and hot gas expanders. Capacity range: 20,400 to 95,200 hp (15,000 to 70,000 kW).

    Packager Guide 2014 GE Oil & Gas do Brasil Ltd., Rio de Janeiro. Principal contact: Rogerio Freitas da Fonseca, regional senior sales leader for Latin America. E-mail: [email protected]. Type of compressors: high-speed reciprocating. Capacity range: 60 to 7200 hp (44 to 5371 kW).

    G.I. & E. S.p.A., Porto Recanati, Italy. Principal contact: Donatello Vocca, sales and marketing director. E-mail: [email protected]. Type of compressors: recip-rocating. Capacity range: 70 to 7000 hp (50 to 5000 kW).

    Great Plains Gas Compression Inc., Hugoton, Kansas. Principal contact: Ter-ry R. McBride, vice president of sales and marketing. E-mail: [email protected]. Types of compressors: reciprocating, rotary screw, rotary vane, blowers, vapor recovery, CNG fueling stations, high spec, and electric. Capacity range: 5 to 5000 hp (3.7 to 3729 kW).

    HBR Equipamentos ltda, Sao Paulo, Brazil. Principal contact: Valdir Zuffo. E-mail: [email protected]. Type of compressors: rotary screw, recipro-cating, centrifugal. Capacity range: up to 5000 hp (3728.5 kW).

    Henry Production Inc., Farmington, New Mexico. Principal contact: Sam Henry. E-mail: [email protected]. Types of compressors: rotary screw, reciprocating and scroll. Capacity range: up to 250 hp (186 kW).

    Howden Process Compressors, Renfrew, U.K. E-mail: (new systems) [email protected]; (service and parts) [email protected]. Type of compres-sors: screw. Capacity range: up to 6705 hp (5000 kW).

    Industrias Juan F. Secco S.A., Rosario, Argentina. Principal contact: Augusto F. Beni. E-mail: [email protected]. Type of compressors: reciprocating. Capacity range: up to 6500 hp (4846 kW).

    J-W Energy Co., Dallas. Principal contact: James R. Barr. E-mail: [email protected]. Type of compressors: reciprocating and rotary screw. Capacity range: 25 to 4500 hp (19 to 3355 kW).

    Kingsly Compression Inc., Cambridge, Ohio; Saxonburg, Pennsylvania. Principal contact: Jeffrey B. Sable. E-mail: [email protected]. Types of compressors: reciprocating, rotary screw. Ca