united states production company
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United States Production Company. Natural Gas STAR Program Involvement and Experience. September 21, 2004. Overview. USP Background Communication and buy-in Data Collection Reduction Opportunities: Plunger Lifts Replacement of high-bleed gas pneumatics - PowerPoint PPT PresentationTRANSCRIPT
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ExxonMobil US Production Co. September 21, 2004
September 21, 2004
Natural Gas STAR Program Involvement and Experience
United States Production Company
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ExxonMobil US Production Co. September 21, 2004
Overview
USP Background
Communication and buy-in
Data Collection
Reduction Opportunities:
- Plunger Lifts- Replacement of high-bleed gas pneumatics- Environmental Vapor Recovery Unit
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ExxonMobil US Production Co. September 21, 2004
Background - US Production Company (USP)
Formed in 2003- Previously 2 separate organizations (US East
and US West)
Consists of oil and gas production operations- Approx. 680 billion cf of gas in ‘03- Approx. 80 million bbls of oil in ‘03
Produces in 11 states and Gulf of Mexico
Employs approximately 2500 people
Would rank 37th on Fortune 500 as a stand-alone company
Flare - WY
Electric-driven Injection Pump - Salt Creek
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ExxonMobil US Production Co. September 21, 2004
Background - USP Production
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ExxonMobil US Production Co. September 21, 2004
Background - US Production Company
Facilities include:- Gas plants- Compressor stations- Offshore platforms- Drilling rigs- Tank batteries
Operational Scope- Primary/Secondary/Tertiary
Oil- Heavy oil- Tight gas- Depths to 17,000 ft- Vertical & horizontal wells
Nine Mile Point Platform - South Texas
Labarge Drilling Operation, WY
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ExxonMobil US Production Co. September 21, 2004
Communication and Data Collection
Challenges- Size- Job rotation
Approach- Brainstorming session with air team:
+ Newsletter article+ Meetings with facilities engineers+ Field trips+ Project database+ Tracking tool
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ExxonMobil US Production Co. September 21, 2004
Plunger Lift Installation
Many low-pressure gas wells must be vented periodically to prevent backpressure
Installation of artificial lift such as plunger lifts eliminates or reduces venting
Increasing number of plunger lift installations- In 2003, achieved methane reduction credit due to these installations
Must be evaluated on individual basis to determine reduction amount, if any
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ExxonMobil US Production Co. September 21, 2004
Replacement of High-Bleed Gas Pneumatics
Gas-driven pneumatics are one of largest sources of vented methane emissions
Retrofit project at Sarita field realized savings of 40,000 kcf/yr with a quick payback
Conducted company-wide study to determine whether any field still contain gas-driven pneumatics
- Most already replaced- Discovered 3 fields still using
+ Plan to evaluate cost/benefit of replacement options
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ExxonMobil US Production Co. September 21, 2004
Environmental Vapor Recovery Unit Technology (EVRU)
Traditional Vapor Recovery Unit (VRU)
- Compressor driven:
+Reliability issues+Maintenance
requirements+Resistance
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ExxonMobil US Production Co. September 21, 2004
Environmental Vapor Recovery Unit Technology (EVRU)
Environmental Vapor Recovery Unit (EVRU)
- New technology- Operates on the Venturi Principle
(no compressor involved)+ Requires:
· High-pressure motive gas stream
· Low to intermediate pressure system to send gas
- EPA issued Environmental Technology Verification Report
EVRU - Mariposa Compressor Station
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ExxonMobil US Production Co. September 21, 2004
Environmental Vapor Recovery Unit Technology (EVRU)
Advantages
- Operational+ Requires no fuel + Requires little space
· Can be skid or pipe-mounted - Efficiency
+ Almost 100% efficient (VRU - 95% efficient)
- Maintenance+ Essentially no maintenance (no moving
parts)- Implementation
+ Quicker - buy-in and shorter delivery time
- Compliance+ Reduced risk of noncompliance
· Reliable and emissions-free EVRU - Mariposa Compressor Station
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ExxonMobil US Production Co. September 21, 2004
Environmental Vapor Recovery Unit Technology (EVRU)
System evaluated for use and implemented at Mariposa Compressor Station
- $11,000/yr. operating expense savings
Payback period approx. 14 months vs. 7 months for VRU
- Due to higher capital cost of EVRU- Able to justify due to other benefits
+ Reduced operating and maintenance costs
+ Reduced downtimeEVRU - Mariposa Compressor Station
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ExxonMobil US Production Co. September 21, 2004September 21,
2004
Natural Gas STAR Program Involvement and Experience
United States Production Company