Gas-oil separation plants (GOSPs) consist of two or three separation stages to separate oil, water and associated gas. Oil flows to the stabilization plants and water to injection wells, while associated gas is sent to gas plants for further processing. At Plant A, the high-pressure (HP) gas has adequate pressure to freely flow to gas plants without compression. Gas from intermediate pressure (IP) and low-pressure (LP) stages flows to a nearby stabilization facility, to be compressed along with gases released from the stabilization plant and sent to the same gas plant where HP gases were directed to.

Utilizing a surface jet pump (SJP) at Plant A was found to be an energy saving and economically attractive alternative as it enabled sending the IP gases directly to the gas plant without gas compression by using HP gas as a motive fluid.

This paper will discuss in detail the design basis of this application and few challenges faced during the test. Also, it will cover the wide range of operational envelope that the jet pump covered during the test. The application was found to be successful and resulted in substantial savings in compression cost.

Advantages of using SJPs include using already available fluid energy within a process stream, no moving parts, zero maintenance, zero power or fuel gas usage, small footprint and varying layout configurations. SJPs are well suited to liquid ingestion and to changes in process conditions (without greatly affecting performance). In this paper, other applications of the SJP are also briefly discussed.

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