STEAMFLOOD

Round Mountain Steam flood:

 

A gently dipping reservoir producing at 99.5% water cut was identified as an attic steamflood target.  Reservoir pressure was maintained due to active aquifer during primary production. Challenges were two fold: how to intercept the aquifer and how to design the flood for optimum recovery. What ensued was a one-of-its-kind steam assisted gravity drainage process requiring high volume electrical submersible pumps. Recoveries from this steamflood have exceeded 90% of original oil in place. 

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Lost Hills Steam flood:

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The Lost Hills Field was a greenfield development in Kern County California, considered to be the shallowest steam flood in the world. Wellbore Isolation and limiting injection pressures were top priority on each well. A key to the major development of the field was securing all the leases from the multiple lease holders. The field is a plunging anticline of two shallow sandstones with heavy oil, along with deeper zones.  The greenfield development required all new infrastructure including a substation, gas supply line, fresh water line, casing vapor recovery gathering, production gathering, a central facility with oil processing, water softening, and steam generation, and an oil sales pipeline.  The reservoir was initially developed with 5-spot patterns, and with 7-spot with dual steam injectors.  

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