1110_4 — Presentation — ExxonMobil — GL Valve Retrieval in Deviated Wells.pdf

When Wireline Won’t Work: Coil Tubing Gas Lift Valve Retrieval

31st Gas-Lift Workshop
Houston, Texas
February 4 – 8, 2008

Carlos Fernandez – ExxonMobil

Abstract
• As highly deviated, complex wells become more common in offshore oil production it is expected that the use of unconventional methods (coil tubing, wireline tractors, etc.) for gas lift valve retrieval and setting will increase across the industry.
• Review ExxonMobil’s experiences utilizing wireline and coil tubing for gas lift valve retrieval and setting in highly deviated wells.
• A detailed case study will be presented on a retrieval attempt made at the Heritage field (Santa Ynez Unit) in California.
• A discussion of ideal wellbore configurations to optimize future coil tubing interventions will be included based on ExxonMobil experience.