nathan m. wheldon, p.e. - gti€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary....
TRANSCRIPT
![Page 1: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/1.jpg)
Methane Reductions in Pigging
Nathan M. Wheldon, P.E.
![Page 2: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/2.jpg)
A WHOLLY-OWNED MPLX
SUBSIDIARY
![Page 3: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/3.jpg)
MARKWEST NORTHEAST RICH GAS GATHERING
MARCELLUS
• MORE THAN 500 MILES OF GATHERING PIPELINE CONSTRUCTED SINCE 2009
UTICA
• MORE THAN 400 MILES OF GATHERING PIPELINE CONSTRUCTED SINCE 2011
~ 2.8 BCF/d GATHERING
![Page 4: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/4.jpg)
WELLHEAD TO PROCESSING PLANT
![Page 5: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/5.jpg)
WHY PIG PIPELINES?
• Reduces pipeline pressure drop
• Sweeps valuable natural gas liquids into slug catcher and processing plant for processing and fractionation
• Prevents internal pipeline corrosion
• Prevents paraffin buildup in the pipeline
![Page 6: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/6.jpg)
PIG LAUNCHER
6
DON’T
LAUNCH
ME - I’M A
SMART PIG
![Page 7: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/7.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
PIPELINE JUST PIGGED AND FLOWING GAS – NEW PIG READY TO LAUNCH
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Slug Catcher/Separator
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 8: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/8.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
LINE ACCUMULATING CONDENSED LIQUIDS
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Slug Catcher/Separator
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 9: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/9.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
TIME TO PIG PIPELINE – OPEN LAUNCHER VALVES, CLOSE BYPASS
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Slug Catcher/Separator
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
ClosedLow pressure gathering pipelines flow from well facilities to a compressor station
![Page 10: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/10.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
PIG REACHES FIRST LOW POINT BEGINS PUSHING LIQUIDS
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Slug Catcher/Separator
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 11: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/11.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
PIG PUSHES LIQUIDS TOWARDS RECEIVER
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Slug Catcher/Separator
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 12: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/12.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
PIG PUSHES LIQUIDS THRU BYPASS AND RECEIVER AND INTO SLUG CATCHER
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 13: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/13.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
CLOSE BYPASS TO PUSH PIG INTO RECEIVER – REMAINING LIQUID IN BYPASS LINE PUSHED INTO SLUG CATCHER BY GAS AND PIG
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 14: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/14.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
TIME TO REMOVE PIG FROM RECEIVER-BYPASS, ISOLATE, AND DEPRESSURIZE
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 15: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/15.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
REMOVE PIG FROM BARREL
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
Low pressure gathering pipelines flow from well facilities to a compressor station
1-2 gallons
of trapped
liquid captured
in bucket
![Page 16: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/16.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
PREPARE LAUNCHER FOR NEXT CYCLE – BYPASS, ISOLATE, AND DEPRESSURIZE
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 17: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/17.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
OPEN LAUNCHER AND INSTALL NEW PIG – SHUT VENTS
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 18: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/18.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
READY FOR NEXT PIGGING OPERATION
LP Rich-Gas
from Wells
HP Rich-Gas from
Compressor Station
To HP PipelinesGas Compressors
Vapor recovery
compressor
LP Condensate to
sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
P = <1 PSIG
T = 40-100 F
Condensate
Storage Tank
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
Low pressure gathering pipelines flow from well facilities to a compressor station
![Page 19: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/19.jpg)
High pressure gathering pipelines flow from compressor stations to a processing plant
TYPICAL HIGH PRESSURE PIGGING OPERATIONS
READY FOR NEXT PIGGING OPERATION
LP Rich-Gas
from Wells High Pressure Gathering Pipeline
P = 80-100 PSIG
T = 40-65 F
Gas shown in Yellow
Condensed Liquid shown in Cyan
Pipeline Pig
Open
Closed
Slug Catcher/Separator
P = 300-400 psig
T = 40-100 F
Slug Catcher
Liquid Stabilizer
Natural Gas Liquids
To Fractionator
ReboilerStabilizer Overheads
Compressor
HP Rich-Gas to
Gas Plant
Pig Receiver Depressurized
to Plant Flare
![Page 20: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/20.jpg)
PIGGING EMISSIONS CONTROLS
![Page 21: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/21.jpg)
PIG LAUNCHER AND RECEIVER SITE
![Page 22: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/22.jpg)
QUANTIFY EMISSIONS
• Calculated using the Real Gas Law
m=((PVMw)/RTZ)*Wt%
P = pressure inside the pipe (psfa) pound per square foot actual
V = actual volume of pipe (ft3)
m = mass of material (lb)
Mw = molecular weight of the mixture (lb/lbmol)
R = universal gas constant (1545 psfa*ft3/lbmol* ◦ R)
T = temperature of mixture(◦R)
Z = compressibility factor (unitless)
Wt% = fractional weight percentage of constituent trying to calculate
![Page 23: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/23.jpg)
HIGH PRESSURE TO LOW PRESSURE JUMPER
LINE
![Page 24: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/24.jpg)
PIG RAMP AWAITING INSTALLATION
U.S. PATENT NUMBER 10012340
![Page 25: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/25.jpg)
PIG RAMP INSTALLED
![Page 26: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/26.jpg)
SHORT BARREL AND LIQUID CONTAINMENT
![Page 27: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/27.jpg)
HYDROCARBON EMISSION REDUCTION DEVICE
PORTABLE FLARE
![Page 28: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/28.jpg)
HYDROCARBON EMISSIONS REDUCTION DEVICE
EMISSIONLESS HOT TAP
![Page 29: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/29.jpg)
HYDROCARBON EMISSIONS REDUCTION DEVICE
ZEVAC
![Page 30: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/30.jpg)
ZEVAC IN ACTION
30
![Page 31: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/31.jpg)
MARKWEST HYDROCARBON EMISSION
REDUCTIONS
• 0.02% of total volume estimated emitted from launcher
and receiver loading operations prior to enhancements
• 84.7% reduction in emissions system wide post
enhancement
• 0.003% of total volume is emitted from pigging
![Page 32: Nathan M. Wheldon, P.E. - GTI€¦ · nathan m. wheldon, p.e. a wholly-owned mplx subsidiary. markwest northeast rich gas gathering marcellus • more than 500 miles of gathering](https://reader035.vdocuments.site/reader035/viewer/2022081523/5fdf67f9e3df9c2700192a92/html5/thumbnails/32.jpg)
BENEFITS OF ENHANCED PIPELINE PIGGING OPERATIONS
⚫ Pig ramp designs are available royalty free
– Affordable cost of fabrication
– Ease of installation
– Reduction liquids at launcher/receiver sites
⚫ Short pig barrels reduce gas volume for potential release
⚫ High/low jumpers prevent gas loss, thus increasing system efficiency
⚫ Portable flares and Zevac reduce emissions