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Unocal Alaska Web-Based Gas-Lift Surveillance Paul Burtis Chris Ruff Scott Herman

Unocal Alaska Web-Based Gas-Lift Surveillance Paul Burtis Chris Ruff Scott Herman. February 2002. Unocal Alaska Operations Map. Typical Gas-Lift Completion. Typical Gas-Lift Surveillance Processes. Vendor-Driven Predominant at Unocal Unocal delegates design and surveillance

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Unocal Alaska Web-Based Gas-Lift Surveillance Paul Burtis Chris Ruff Scott Herman

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  1. Unocal Alaska Web-Based Gas-Lift SurveillancePaul BurtisChris RuffScott Herman February 2002

  2. Unocal Alaska Operations Map

  3. Typical Gas-Lift Completion

  4. 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

  5. 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

  6. Unocal Alaska Gas Lift Program - 2000

  7. Unocal Alaska Gas Lift Surveillance Process • Dedicated staffing • Informed decisions based on data • Web-assisted surveillance

  8. 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

  9. Unocal Alaska Web-Based Surveillance

  10. Unocal Alaska Web-Based Surveillance

  11. Unocal Alaska Web-Based Surveillance

  12. 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

  13. 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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