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Industry Article: Novel Technique Used to Manage Water Encroachment in Wells Requiring Gravel Packing in Colombia’s Ocelote Field

Novel Technique Used to Manage Water Encroachment in Wells Requiring Gravel Packing in Colombia’s Ocelote Field
Publication: World Oil
Publication Date: 08/01/2013

The Ocelote field in the Llanos foreland basin is Colombia’s most prolific hydrocarbon basin. A wildcat well in the field confirmed a monocline structure, oriented in a northeast/southwest direction, developing in the footwall of the normal antithetic Guarrojo fault. The main production interval is the Carbonera C7 formation, which produces 24⁰ API oil. The formation has been interpreted initially as fluvial channel deposits associated with a broad shaly floodplain and highly unconsolidated sandstone. In general terms, the Carbonera C7 formation consists of a monoclonal fault. To manage water encroachment in the Carbonera C7 formation, a novel water-packing technique for wells that require gravel packing for sand control, in addition to inflow control device functionality, has resulted in 100% pack efficiencies. The technique has significantly reduced water cuts and substantially improved project economics.




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