Tidelands Oil Production Company was producing associated gas containing high levels of CO2 that did not meet the specification of the local utility and was being flared. An alternative use for the gas was to fuel a 2,000 horsepower internal combustion engine to drive a high-pressure water injection pump. However, the strict emission level requirements for NOX, CO and VOCs at the Southern California location required that a new emissions control design be configured and used. This paper will discuss the system design, economics and the steps taken to enable the internal combustion engine to meet the strict emissions standards of the region while using off-spec, high CO2, produced gas.

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