Roger E. MeadowsGPM Gas Corp.Oklahoma City Removing accumulated line liquids with pigging rather than conventional sphere-launching methods has improved natural-gas flow efficiencies to more than 90% from 15% in 200 miles of a high-pressure gathering system in western Oklahoma. The improved efficiencies increased capacity on two legs of the system by more than 20 MMcfd and allowed operator GPM Gas Corp. to shift gas between three processing plants in the company's Oklahoma region - Cimarron, Okarche, and Kingfisher. This gas-flow shift improves plant efficiencies and reduces operating costs. It also provides gathering system flexi...

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