Wells – Processes – Distinct – separate injection and producing wells
Patent
1975-06-30
1977-02-08
Novosad, Stephen J.
Wells
Processes
Distinct, separate injection and producing wells
166273, E21B 4320, E21B 4322
Patent
active
040067793
ABSTRACT:
A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting via the injection well into the formation an aqueous solution of lignosulfonate salt as a sacrificial agent to inhibit the deposition of surfactant contained in a micellar dispersion (microemulsion) on the reservoir matrix. Normally the process would be carried out by first injecting the lignosulfonates into the formation through the injection well and following them with a micellar dispersion which may contain lignosulfonates. The micellar dispersion would then be followed by a drive fluid such as water to push the dispersion to the production well.
REFERENCES:
patent: 3384171 (1968-05-01), Parker
patent: 3476188 (1969-11-01), Harvey
patent: 3478823 (1969-11-01), Murphy
patent: 3520366 (1970-07-01), Jones
patent: 3532166 (1970-10-01), Williams
patent: 3688844 (1972-09-01), Roszelle
patent: 3700031 (1972-10-01), Germer et al.
patent: 3844350 (1974-10-01), Knight et al.
Novosad Stephen J.
Priem Kenneth R.
Ries C. G.
Suchfield George A.
Texaco Inc.
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