January 2006

Special Report: Gas Processing Developments

Improve natural gas liquids recovery

Designing for temperature variations does impact operating costs and unit efficiencies

Singh, D., Shedded Uhde Pty Ltd.; Singh, S., Fort Wheeler Eastern Pte. Ltd.

Ambient air temperature has a large impact on natural gas liquids (NGLs) recovery. Co-produced with crude oil, NGL (mainly C5s) is dependent on the reservoir and separation temperatures. A new study investigates how to optimize NGL recovery. Typical unit operation. The typical NGL and crude stabilization unit configuration is shown in Fig. 1. Outlet gas from the separator is cooled and finally chilled prior to flashing in the three-phase separator, V2. Chiller temperature is optimized to maximize the condensate recovery as well as to ensure fuel gas/ sales gas specification. Condensate from separator, V2, is routed to the de-ethanizer to recover methane and ethane as fuel gas/ sales gas. E

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