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Focusing on Fundamentals--
Cindy ReeceSubsurface Engineering Manager
ExxonMobil
ASMEFebruary 2002
Gas Lift
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Stare directly at the center black dot.When you focus on the dot, the gray haze around it will appear to shrink.
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The Importance of Analyzing Performance
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• Artificial lift--a core business within EM
• The importance of gas lift
• Gas Lift Best Practices
• Best Practices rollouts
• Future enhancements
EM Gas Lift Initiatives
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Artificial Lift is Core Business
• ExxonMobil’s Production Operations Best Practices summarizes Artificial Lift Processes:
– Purpose: Perform artificial lift design, surveillance and optimization to improve well productivity via production
buildup/uplift and cost reduction
• Production Unit Asset teams establish clear responsibilities and assign qualified resources to facilitate artificial lift optimization to optimize well production and expense
– Deliverable: Artificial lift designs and optimized artificial lift systems
– Components:
† Selection of most appropriate form of artificial lift
† Comprehensive artificial lift surveillance program
† Artificial lift modeling, diagnostics and analysis
† Analysis of artificial lift key performance indicators and data
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EM Gross Operated Oil Production Year 2000
31%
12%
4%
2%
51% 49%
FlowingGas LiftRod PumpPCPESP
Flowing
The Importance of Gas Lift
•31% of EM s operated oil production is gas lifted (12% wells)
•Future projects rely heavily on gas lift
•49% of EM operated oil production is artificially lifted
ArtificialLift
GasLift
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Gas Lift Best Practices
• EM experience showed that low cost optimization efforts frequently resulted in 5+ percent increases in production
• Typically, the gains went away after a period of time unless sustained focus on gas lift surveillance and optimization processes
• Six experienced gas lift engineers/technicians from US and overseas Production Units developed “Gas Lift Best Practices”
• Gas lift best practices incorporate common experiences and proven practices around:
– Organization and training
– Surveillance and optimization
– Design and equipment
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Gas Lift Optimization Team
• Team Charter is owned by CE, Subsurface Engineering• Team consists of two SSE members and Gas Lift
Coordinators from eight worldwide Producing Units
Team Charter Objectives
• Achieve immediate buildup from implementing gas lift optimization best practices
• Provide a means of collecting, developing, disseminating, and leveraging gas lift best practices throughout ExxonMobil
• Maximize gas lifted oil production through optimum gas lift designs, efficient gas lift surveillance, troubleshooting, and operation
• Rollout Gas Lift Best Practices to the Production Units
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Gas Lift Rollouts
• 7 Production Units have been rolled out
• Each rollout team has consisted of SSE GLO team members and one or two other Production Unit Team members
• 6-8% gas lift production buildup has been identified, combined from existing projects within the Production Units, and other opportunities identified during the rollout process
• Production Units are actively pursuing identified opportunities and incorporating the best practices into their gas lift business
There is renewed on gas lift processesfocusfocus
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Future Gas Lift Plans
• Improve the current Gas Lift Best Practices with learnings from the rollouts. Leverage proven successful practices and good ideas among the Production Units
• Support and promote the Gas Lift Optimization Team’s interaction and communication for support of the each Production Unit’s gas lift efficiencies
• Continue emphasis on gas lift training
• Seek out and transfer new technology to improve gas lift processes and performance
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