INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we...
Transcript of INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we...
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INNOVATIONS IN PIGGING
Nathan M. Wheldon, PE
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A WHOLLY-OWNED MPLX SUBSIDIARY
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WELLHEAD TO PROCESSING PLANT
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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
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PIG LAUNCHER
5
DON’T LAUNCH ME - I’M A SMART PIG
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TYPICAL LOW PRESSURE PIGGING OPERATIONS
PIPELINE JUST PIGGED AND FLOWING GAS – NEW PIG READY TO LAUNCH
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
Slug Catcher/Separator
CondensateStorage 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 7: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/7.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
LINE ACCUMULATING CONDENSED LIQUIDS
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
Slug Catcher/Separator
CondensateStorage 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: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/8.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
TIME TO PIG PIPELINE – OPEN LAUNCHER VALVES, CLOSE BYPASS
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
Slug Catcher/Separator
CondensateStorage 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
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TYPICAL LOW PRESSURE PIGGING OPERATIONS
PIG REACHES FIRST LOW POINT BEGINS PUSHING LIQUIDS
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
Slug Catcher/Separator
CondensateStorage 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: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/10.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
PIG PUSHES LIQUIDS TOWARDS RECEIVER
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
Slug Catcher/Separator
CondensateStorage 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: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/11.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 fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
CondensateStorage 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 12: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/12.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONSCLOSE 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 fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
CondensateStorage 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: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/13.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
TIME TO REMOVE PIG FROM RECEIVER-BYPASS, ISOLATE, AND DEPRESSURIZE
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
CondensateStorage 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: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/14.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
REMOVE PIG FROM BARREL
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
CondensateStorage 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 gallonsof trappedliquid capturedin bucket
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TYPICAL LOW PRESSURE PIGGING OPERATIONS
PREPARE LAUNCHER FOR NEXT CYCLE – BYPASS, ISOLATE, AND DEPRESSURIZE
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
CondensateStorage 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 16: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/16.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
OPEN LAUNCHER AND INSTALL NEW PIG – SHUT VENTS
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
CondensateStorage 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: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/17.jpg)
TYPICAL LOW PRESSURE PIGGING OPERATIONS
READY FOR NEXT PIGGING OPERATION
LP Rich-Gas from Wells
HP Rich-Gas fromCompressor StationTo HP Pipelines
Gas Compressors
Vapor recoverycompressor
LP Condensate to sales by truck
Low Pressure Gathering Pipeline
P = 80-100 PSIGT = 40-65 F
P = <1 PSIGT = 40-100 F
CondensateStorage 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: INNOVATIONS IN PIGGING - RMEHSPG 4 QTR.pdf · 2020. 10. 22. · By pigging pipelines frequently, we are able to reduce the risk of hydrate formation by sweepin\൧ free water out](https://reader033.fdocuments.in/reader033/viewer/2022061005/60b2fdc6abfe3a3e635e3978/html5/thumbnails/18.jpg)
PIG LAUNCHER AND RECEIVER SITE
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VOC PERMIT EMISSIONS LIMITS
• No federal limit• State limits vary state to state
Calculated using the Real Gas Law
m = PVMw/(RTZ)*VOCwt%
P = pressure inside the pipe (psia) pound per square inch actualV = actual volume of pipe (ft3)m = mass of material (lb)Mw = molecular weight of the mixture (lb/lbmol)R = universal gas constant (10.73 psia*ft3/lbmol* ◦ R)T = temperature of mixture(◦R)Z = compressibility factor at given pressure (unitless)VOCwt% = percentage of gas that is VOC on weight basis
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HIGH PRESSURE TO LOW PRESSURE JUMPER LINE
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VOC EMISSIONS REDUCTION DEVICE
EMISSIONLESS HOT TAP
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VOC EMISSIONS REDUCTION DEVICEZEVAC
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PIG RAMP AWAITING INSTALLATION
U.S. PATENT NUMBER 10012340
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PIG RAMP INSTALLED
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SHORT BARREL AND LIQUID CONTAINMENT
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VOC EMISSION REDUCTION DEVICEPORTABLE FLARE
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MARKWEST VOC EMISSION REDUCTIONS
• 0.02% of total volume estimated emitted from launcher and receiver loading operations prior to enhancements of adding jumper lines where feasible, flares at 7 of 223 locations and pig ramps.
• 84.7% reduction in emissions system wide post enhancement
• 0.003% of total volume is emitted from pigging
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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