Wells – Processes – Distinct – separate injection and producing wells
Patent
1981-09-14
1983-11-15
Novosad, Stephen J.
Wells
Processes
Distinct, separate injection and producing wells
166275, E21B 4322
Patent
active
044150334
ABSTRACT:
The method of oil recovery for use within a fluid flood comprising grading the viscosity of injected fluids at a low concentration at the front thereof to a high concentration at the rear thereof to prevent the formation of viscous zones within the injected fluids which reduce oil recovery.
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patent: 3421582 (1969-01-01), Fallgatter
patent: 3698479 (1972-10-01), Askew et al.
patent: 3719606 (1973-03-01), Froning et al.
patent: 4013125 (1977-03-01), Plummer et al.
patent: 4018281 (1977-04-01), Chang
patent: 4066126 (1978-01-01), Waite et al.
patent: 4319636 (1982-03-01), Kudchadker et al.
Casteel Jerry F.
Chan Albert F.
Brown Scott H.
Hook Fred E.
May Stephen R.
Novosad Stephen J.
Standard Oil Company
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