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PETROLEUM TECHNOLOGY COMPANY
- Improving well performance and integrity
Technical Papers

Retrofit Gas Lift without workover

GoLift
Retrievable Gas Lift Straddle
GoLift
Retrievable Gas Lift Straddle
GoLift Straddle
GoLift Straddle
GoLift Straddle
GoLift Straddle
GoLift Straddle

Retrofit Gas Lift System for Premier Oil's Brenda D3

An existing subsea gas lifted oil well in the Central North Sea stopped producing. The existing third

party gas-lift system was comprised of 2 x IPO unloading valves and an operating valve. Due to an error in

the gas lift design continuous gas injection could only be achieved via the uppermost IPO unloading

valve. The uppermost IPO unloading valve eventually failed and it was no longer possible to inject lift gas

into the well, stopping production.

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