E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/39
E21B 43/24 (2006.01) E21B 43/18 (2006.01) E21B 43/30 (2006.01)
Patent
CA 1151532
HIGH VERTICAL CONFORMANCE STEAM DRIVE OIL RECOVERY METHOD (D#77,093-F) ABSTRACT OF THE DISCLOSURE The vertical or both vertical and horizontal conformance of a steam drive process is improved by employ- ing one or more infill wells between the injection well and production well, the infill well being in fluid com- munication with the bottom half or less of the formation. In the first step, petroleum is recovered from the infill well after oil production at the production well has pro- ceeded to a predetermined point. After water cut of fluids being produced from the infill well reaches a predetermined value, the production well is converted from a production well to an injection well and steam is injected into the converted well while continuing recovering fluids from the infill well. When one infill well is employed in a more or less aligned arrangment between injection and production wells, the vertical conformance is improved. When one or more infill wells are utilized in a pattern comprising one or more injectors and one or more producers, both horizontal and vertical conformance is improved. I
375342
Deibert Albert D.
Traverse Eugene F.
Gowling Lafleur Henderson Llp
Texaco Development Corporation
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