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Gas Well Deliquification Workshop
Sheraton Hotel, Denver, Colorado
February 27 – March 2, 2011
FOUND: LOW COST PUMPING SYSTEM
FOR DE-WATERING GAS WELLS
Dave Phillips (Samson Pump LLC)
James Martin (Consultant)
Matt Raglin (SPIRIT Global Energy Solutions, Inc.)
Jeff DaCunha, Ph. D (BREX, Inc.) / Ken Nolen (Consultant)
Norman W. Hein, Jr., P. E. (Oil & Gas Optimization Specialists, Ltd.)
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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Contents
• ―Wanted‖ Story Demands Answer
• New System for Gas Well Deliquification
• Department of Energy Awards Grants to Samson Pump
• Testing and Pilot Well Installations @ RMOTC
• First Phase of Well Tests @ Red Raider #1
• Second Phase of Well Tests @ Red Raider #1
• Conclusions & Recommendations
• Copyright
• Disclaimer
Wanted: low-cost pumping for gas wells **
• Liquid loading is a common cause of production
impairment in gas wells, particularly depleted wells.
• Increasing production from marginal gas wells will
depend on the development of new, low-power, low-cost
technology that will reliably and economically remove
small liquid volumes.
** Paper By Bryan Dotson, Fulbert Del Mundo and Stephan Cadwallader;
BP America Production Co. (E & P Technology, December 2006)
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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―Wanted‖ Story Demands Answer
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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―Wanted‖ Story Demands Answer
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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―Wanted‖ Story Demands Answer
• In most cases, a very small liquid volume needs
to be lifted in order to deliquify the well bore.
• A minimum of about 25 hp is generally specified,
partially because smaller equipment is not
routinely available.
• Hydraulic Power Distribution: If we had small,
efficient pumps, many US wells could use them.
• Following successful downhole pump trials,
system development will package not only the
pump but also the liquid/power conduits, surface
power supply and sales/service.
• Extend well life by reducing the economic limit:
Lowers capital investment
Decreases installation costs
Reduces operating expense
• Traditional beam pumping (cyclic loading):
Inefficient at low rates
Can require higher lift capacity than the well
actually produces (minimum +/- 25 horsepower)
• Many low liquid volume gas wells cannot justify the
current cost of artificial lift
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
The Samson ultra high efficiency down-hole pump
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
The Samson high efficiency down-hole pump
The Samson ultra high efficiency down-hole pump
• Exponential less leakage/slippage than conventional
• Still produces at 1/2 SPM even with loose fit
• Can also handle solids production (sand and fines)
• Longer run times result from less valve failure
• Reduces required surface horsepower and
counterbalance
• (Testing Results Data to follow)
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
Spoolable, Thermoplastic, Hollow Pump Actuator
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
• Light-weight reduces
required surface horsepower
• Smooth Liners Improves
Pressure Drop by up to 50%
• Inner Layer for Corrosion
Resistance, Low Permeation
and Higher Temp Strength—
Fortron
• Liner compatible with
Hydrocarbons, Brine, CO2,
H2S—no paraffin adhesion
Internal Layer
Spoolable, Thermoplastic, Hollow Pump Actuator
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
• Cross Braids Provide Axial Strength
• Longitudinal Braids Provide Tensile
Strength to Minimize Stretch
• Aramid Fibers for Fatigue and
Strength (KEVLAR)
• Wall Thickness for Collapse
Resistance
• Small ID maximizes liquid velocity
• Eliminates corrosion, reduces
abrasion
Middle Layer
Spoolable, Thermoplastic, Hollow Pump Actuator
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
• Aramid fibers
(KEVLAR) have a
higher tensile
strength than glass
fibers
• High resistance to
fatigue
• Easily Fished
KEVLAR/EPOXY
Spoolable, Thermoplastic, Hollow Pump Actuator
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
• Couplings Swaged on Both Ends
• Duplex 2205 Stainless Grade or
Carbon Steel
• Any Thread or Connection is
Available
• Installable in the Field or Plant
• Coupling can serve as splice
Spoolable, Thermoplastic, Hollow Pump Actuator
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
• No Workover Rig
needed for installation
or pump change
• Service truck/trailer
will be readily
available for
installation and
servicing
Linear Rod Pumping Unit
• Speed controlled linear motor, at the surface, to
actuate the rod string
• Eliminates fluid-pound without intermittently shutting
the well down – incorporated pump-off controller
• Reversing motor regenerates to charge capacitors on
downstoke
• Small enough to be installed by hand – 2 man crew
• Can operate on solar panel power
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
Linear Rod Pumping Unit
UNICO LRP ID Tag LRP Motor/Gearbox
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
Linear Rod Pumping Unit
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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New System for Gas Well Deliquification
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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Department of Energy Awarded Two Grants to Samson Pump
• Grants from the U.S. Department of Energy (DOE) were
received to test the patented Samson Pump and
evaluate its benefits to sub-surface fluids production
• Testing proved that the Samson Pump operates with
higher efficiency (less leakage) than a conventional API
Pump – due to its variable length seal between the
barrel & plunger
• Recipient of REPSA (Research Partnership to Secure
Energy for America) ―Energy Award‖ in 2009 Competition
• Now in commercialization stage – seeking
producers/operators to provide field installations
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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Testing and Pilot Wells @ RMOTC
• Rocky Mountain Oilfield Testing Center provides test
well for analysis of sucker rod pumps
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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Testing and Pilot Well @ RMOTC
• Field installations on open hole shale wells provided a
useful application for stripper wells – 3 sold to DoE
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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First Phase of Well Tests @ Red Raider #1
• Testing was done at the Texas Tech University’s Red
Raider #1 test well
Red Raider 1 well site Red Raider 1—plumbing “loop”
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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First Phase of Well Tests @ Red Raider #1
• SPIRIT Global Energy Solutions, Inc. was contracted to
assist with the testing and data analysis
Who We AreThe SPIRIT team is globally recognized as the principal experts in
rod-pumping worldwide.
Leveraging our nucleus of technical expertise to improve rod
pumping processes worldwide is our goal.
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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First Phase of Well Tests @ Red Raider #1
• Comparisons were made on how the patented Samson
Pump worked versus a conventional/API pump
• Pump card for API pump looks like worn pump
• Pump card for the SAMSON Pump shows efficiency
1-3/4” API @ 1 SPM 1-3/4” Samson @ 1 SPM
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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First Phase of Well Tests @ Red Raider #1
Samson
API
Dynamometer Card Overlay
• 1-3/4‖ bore pumps
• 88‖ stroke length
• 1 SPM
• 0.009‖ overall clearance/tolerance/fit
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop Denver, Colorado
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First Phase of Well Tests @ Red Raider #1
Item Units API SAMSON Diff
Speed SPM 1 1 0
Fluid Level FAP 591 591 0
Pump Size Inch 1.75 1.75 0
Stroke Inch 88 88 0
Pump Stroke Inch 88 87 1
Net Stroke Inch 0 62 62
Production BPD 0 18 18
Clearance Inch .009 .009 0
Leakage BPD 31 12 19
DH Fluid Load Lbs 3205 3366 161
API Pump vs. Samson Pump -- Dynamometer Report
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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First Phase of Well Tests @ Red Raider #1
Note: Integral represents variable seal length
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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First Phase of Well Tests @ Red Raider #1
1-3/4" Pump Production Comparison 0.009‖ fit, 86‖ stroke , 1 SPM
SPM API SAM Ratio
0.5 (22.14)* 3.03 ∞
1 (6.79)* 18.38 ∞
2 23.91 49.08 105%
3 54.62 79.79 46%
4 85.32 110.49 30%
5 116.02 141.19 22%
6 146.72 171.89 17%
7 177.42 202.59 14%
8 208.13 233.30 12%
9 238.83 264.00 11%
10 269.53 294.70 9%* Indicates “Negative Rate” – pump cannot leak more than displacement
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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2nd Phase of Well Tests @ Red Raider #1
• This phase compared the Samson Pump with twice the fit
of the conventional/API pump in 1-1/4‖ bore, 88‖, 1 SPM
• API=0.006, SAM=0.012
• Fit/Clearance/Tolerance times Cross Sectional Area of
Plunger/Barrel Interface makes the ―Space‖ exponential
1-1/4” API @ 1 SMP 1-1/4” Samson @ 1 SMP
Samson
API
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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2nd Phase of Well Tests @ Red Raider #1
Note: Integral represents variable seal length
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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2nd Phase of Well Tests @ Red Raider #1
3 SPM: (avg :1.47lbs/min>.176gal/min>.00419bbl/min>6.03bbl/day)
Patriot Pump_0.75” Bore_12’Plunger_0.003” Fit
1 SPM: (avg: 0.37lbs/min>.044gal/min>.00105bbl/min>1.52bbl/day)
2 SPM: (avg: 0.92lbs/min>0.11gal/min>.00262bbl/min>3.77bbl/day)
Samson Pump_0.75” Bore_8’Plunger_0.003” Fit
1 SPM: (avg: .44lbs/min>0.053bal/min>.00127bbl/min>1.83bbl/day)
2 SPM: (avg: 1.18lbs/min>0.141gal/min>.0033bbl/min>4.84bbl/day)
3 SPM: (avg: 1.73lbs/min>0.207gal/min>.0049bbl/min>7.10bbl/day)
1 SPM 20%
2 SPM 28%
3 SPM 18%
Samson Pump averaged 22% more efficient
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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Conclusions & Recommendations
• Throughout the oil and gas industry the challenge for
energy efficient, low volume production solutions
exists
• The results of combining ultra high efficiency pumps,
hollow pump actuator/fiberglass sucker rods, and low
volume energy saving pumping units will undoubtedly
change the way low volume stripper wells are viewed
from an economic standpoint
• Dewatering of gas wells utilizing rod pumping
artificial lift is a prime application for these combined
technologies.
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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Copyright
Rights to this presentation are owned by the company(ies) and/or author(s) listed on the title page. By submitting this presentation to the Gas Well Deliquification Workshop, they grant to the Workshop, the Artificial Lift Research and Development Council (ALRDC), and the Southwestern Petroleum Short Course (SWPSC), rights to:
– Display the presentation at the Workshop.
– Place it on the www.alrdc.com web site, with access to the site to be as directed by the Workshop Steering Committee.
– Place it on a CD for distribution and/or sale as directed by the Workshop Steering Committee.
Other use of this presentation is prohibited without the expressed written permission of the author(s). The owner company(ies) and/or author(s) may publish this material in other journals or magazines if they refer to the Gas Well Deliquification Workshop where it was first presented.
Feb. 27 - Mar. 2, 2011 2011 Gas Well Deliquification Workshop
Denver, Colorado
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Disclaimer
The following disclaimer shall be included as the last page of a Technical Presentation or Continuing Education Course. A similar disclaimer is included on the front page of the Gas Well Deliquification Web Site.
The Artificial Lift Research and Development Council and its officers and trustees, and the Gas Well Deliquification Workshop Steering Committee members, and their supporting organizations and companies (here-in-after referred to as the Sponsoring Organizations), and the author(s) of this Technical Presentation or Continuing Education Training Course and their company(ies), provide this presentation and/or training material at the Gas Well Deliquification Workshop "as is" without any warranty of any kind, express or implied, as to the accuracy of the information or the products or services referred to by any presenter (in so far as such warranties may be excluded under any relevant law) and these members and their companies will not be liable for unlawful actions and any losses or damage that may result from use of any presentation as a consequence of any inaccuracies in, or any omission from, the information which therein may be contained.
The views, opinions, and conclusions expressed in these presentations and/or training materials are those of the author and not necessarily those of the Sponsoring Organizations. The author is solely responsible for the content of the materials.
The Sponsoring Organizations cannot and do not warrant the accuracy of these documents beyond the source documents, although we do make every attempt to work from authoritative sources. The Sponsoring Organizations provide these presentations and/or training materials as a service. The Sponsoring Organizations make no representations or warranties, express or implied, with respect to the presentations and/or training materials, or any part thereof, including any warrantees of title, non-infringement of copyright or patent rights of others, merchantability, or fitness or suitability for any purpose.