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Published byHaley Mooney Modified over 11 years ago
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Unocal Alaska Web-Based Gas-Lift Surveillance Paul Burtis Chris Ruff Scott Herman February 2002
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Unocal Alaska Operations Map
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Typical Gas-Lift Completion
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Typical Gas-Lift Surveillance Processes Vendor-Driven Predominant at Unocal Unocal delegates design and surveillance Results in unknown optimization level Operator Staff-Driven Engineer Part-Time Work typically prioritized downward Technician Full-Time Optimum results
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Typical Gas-Lift Surveillance Processes Vendor-Driven Timetable driven surveillance Engineering staff typically uninformed about key design and operation parameters Operators not fully aware of these parameters
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Unocal Alaska Gas Lift Program - 2000
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Unocal Alaska Gas Lift Surveillance Process Dedicated staffing Informed decisions based on data Web-assisted surveillance
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Surveillance Program - 2000 Optimization work performed on 19% of active gas lift wells in 2000 Gas lift diagnostics run on 34% of active gas lift completions
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Unocal Alaska Web-Based Surveillance
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Surveillance Program - 2001 Results Previous program well turnaround = 60 days Current process = 2 days Average production deferment = 50 bopd Deferred yearly program revenue = $480,000
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Conclusions Gas lift completions require continuous surveillance to yield optimum returns Web-based technology is available to systematically change current surveillance This technology requires key staff understand their key performance / design parameters
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