Wells – Processes – Cyclic injection then production of a single well
Patent
1985-06-03
1986-09-23
Novosad, Stephen J.
Wells
Processes
Cyclic injection then production of a single well
166271, 166272, E21B 4300, E21B 4324, E21B 4326
Patent
active
046129898
ABSTRACT:
Performing steam drive operations in critical manipulative steps can improve the recovery of viscous hydrocarbons from tar sand deposits. Steam is injected into an injection well at a rate that is less than the rate needed to fracture the formation, and fluids are simultaneously produced from a communicating production well. When steam breakthrough occurs at the production well, the production well is shut-in, and the injection rate is increased to a rate at least sufficient to fracture the formation. After the reservoir is sufficiently heated, injection ceases and production resumes. Once the production rate declines to a rate that is no longer efficient, the process can be repeated.
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Bombardieri Caurino C.
Rakach Alec
Burleson Karen T.
Exxon Production Research Co.
Kisliuk Bruce M.
Novosad Stephen J.
Riley James H.
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