Wells – Processes – Separating material entering well
Patent
1993-11-09
1995-04-18
Suchfield, George A.
Wells
Processes
Separating material entering well
166 50, 166268, 166271, 1663051, E21B 4322, E21B 4326, E21B 4340
Patent
active
054070090
ABSTRACT:
A method for the recovery of hydrocarbons from a hydrocarbon deposit overlying an aquifer, including injecting a hydrocarbon solvent in the vapour phase into the aquifer to mobilize hydrocarbons in the hydrocarbon deposit; and producing mobilized hydrocarbons from the hydrocarbon deposit. Mobilized hydrocarbons are produced from the aquifer, and the hydrocarbon solvent is injected along one or more predominantly horizontal injection wells in the aquifer that are spaced from and alternate with the production well or wells. The hydrocarbon solvent is a hydrocarbon solvent selected from the group consisting of ethane, propane, butane. Apparatus for the recovery of hydrocarbons from a hydrocarbon deposit overlying an aquifer, includes at least a first and preferably several injection wells drilled into the aquifer, the injection wells having a portion open to fluid communication with the aquifer; and at least a first production well and preferably several production wells drilled into one of the aquifer and the deposit, and spaced horizontally from the injection well, the first production well including a pump for pumping oil from the well. The injection wells and production wells preferably lie parallel to each other, spaced apart and alternate. A solvent recovery system is also preferably connected between adjacent injection wells and production wells. The injection and production wells preferably have a portion lying horizontally in the aquifer. The aquifer may be created by hydraulic fracturing of the base of the deposit.
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A new process (VAPEX) for recovering heavy oils using hot water and hydrocarbon vapour, Roger M. Butler and Igor J. Mokrys, Jan.-Feb. 1991, vol. 30, No. 1, pp. 97-106.
Recovery of Heavy Oils Using Vapourized Hydrocarbon Solvents: Further Development of the Vapex Process, R. M. Butler and I. J. Mokrys, The Journal of Canadian Petroleum Technology, Jun., 1993, Vol. 32, No. 6, pp. 56-63, together with preprint thereof dated Oct. 7-9, 1991.
In-Situ Upgrading of Heavy Oils and Bitumen By Propane Deasphalting: The Vapex Process, I. J. Mokrys and R. M. Butler, U. of Calgary, Society of Petroleum Engineers, Inc., paper No. SPE 25452, Mar. 21-23, 1993, Oklahoma City, Okla., U.S.A., pp. 409-424.
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The production of conventional heavy oil reservoirs with bottom water using steam-assisted gravity drainage, S. Sugianto and R. M. Butler, The Journal of Canadian Petroleum Technology, Mar.-Apr., 1990, vol. 29, No. 2, pp. 78-86.
Butler Roger M.
Mokrys Igor J.
Lambert Anthony R.
Suchfield George A.
University Technologies International Inc.
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