Wells – Valves – closures or changeable restrictors
Patent
1978-11-22
1980-04-22
Novosad, Stephen J.
Wells
Valves, closures or changeable restrictors
166272, E21B 4300, E21B 4324
Patent
active
041990285
ABSTRACT:
Geopressurized gas (methane) containing aquifers are produced into relatively low pressure reservoirs such as depleted or partially depleted oil and gas reservoirs. Primary production of the methane in the water is effected by exsolvation upon entering the low pressure reservoir and movement through the reservoir to production walls. Enhanced recovery of hydrocarbons remaining in depleted or partially depleted reservoirs results from one or more of (1) the sweeping action of the methane moving through the reservoir, (2) pressure maintenance and water drive associated with injection of the naturally pressured water, and (3) reservoir heating caused by the higher temperature of the injected geopressured water.
REFERENCES:
patent: 3258069 (1966-06-01), Hottman
patent: 3294167 (1966-12-01), Vogel
patent: 3354952 (1967-11-01), Engle
patent: 3361202 (1968-01-01), Whipple
patent: 3679264 (1972-07-01), Van Huisen
patent: 3805885 (1974-04-01), Van Huisen
patent: 4040487 (1977-08-01), Cook, Jr. et al.
National Academy of Sciences, Report No. FE-2271-1, "Natural Gas from Unconventional Geologic Sources", Board on Mineral Resources, Commission on Natural Resources, Contract E(49-18)-2271, Jan. 15, 1976, Wash., D.C.
Conoco Inc.
Novosad Stephen J.
Reinert A. Joe
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