Wells – Processes – Distinct – separate injection and producing wells
Patent
1979-11-05
1981-02-10
Guynn, Herbert B.
Wells
Processes
Distinct, separate injection and producing wells
166274, 252 855D, 260124R, E21B 4322
Patent
active
042496063
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 carboxylated with carbon dioxide as a sacrificial agent to inhibit the deposition of surfactant and/or polymer on the reservoir matrix. The process may best be carried out by injecting the lignosulfonates carboxylated with carbon dioxide into the formation through the injection well mixed with either a polymer, a surfactant solution and/or a micellar dispersion. This mixture would then be followed by a drive fluid such as water to push the chemicals to the production well.
REFERENCES:
patent: 3384171 (1968-05-01), Parker
patent: 3469630 (1969-09-01), Hurd et al.
patent: 3476188 (1969-11-01), Harvey
patent: 3700031 (1972-10-01), Germer et al.
patent: 3797574 (1974-03-01), Feuerbacher et al.
patent: 3865803 (1975-02-01), Falkehag
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 12, 1967, pp. 369-374.
Guynn Herbert B.
Kulason Robert A.
Priem Kenneth R.
Ries Carl G.
Texaco Inc.
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