Bypass plunger effectively lifts volatile oil

Theodore A. Pagano, Cory L. Eikenberg; Kerr-McGee, Evans, Colo.In Colorado’s Wattenberg field, Kerr-McGee developed a successful and economic method for artificially lifting, with a bypass plunger, the volatile oil found in the Codell formation.This artificial-lift method delays the closure of microfissures and the formation of retrograde condensate and dead oil in the reservoir, while maintaining the solution-gas energy in the reservoir.Codell formationVarious operators currently are developing the Codell formation in Colorado’s greater Wattenberg field area. For years, however, operators bypassed the Codell formation and overlooked its productive potential because deeper com...

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