Microbiocidal anionic sequesterants with polyvalent metal cation

Details Microbiocidal anionic sequesterants with polyvalent metal cation Microbiocidal anionic sequesterants with polyvalent metal cation

1985-07-09

1986-12-16

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524395, 524398, 524399, C08K 509

Patent

active

046297472

ABSTRACT:
A water permeability correction process, and composition therefor, to improve the sweep efficiency of waterflooding which involves the sequential injection of (1) an optional aqueous preflush slug to adjust connate water salinity, (2) an aqueous sequestered polyvalent metal cation, such as chromium, wherein the sequestering anion is bactericidal, such as propionate, (3) a gelable polymeric viscosifier, such as polyacrylamide, and, preferably, (4) an aqueous drive fluid.

REFERENCES:
patent: 3056757 (1962-10-01), Rakowitz
patent: 3265657 (1966-08-01), Sinclair
patent: 3554287 (1971-01-01), Eilers
patent: 3762476 (1973-10-01), Gall
patent: 3952806 (1976-04-01), Trantham
patent: 3981363 (1976-09-01), Gall
patent: 4014831 (1977-03-01), Bock
patent: 4018286 (1977-04-01), Gall et al.
patent: 4032496 (1977-06-01), Spencer
patent: 4039029 (1977-08-01), Gall
patent: 4367297 (1983-01-01), Hubner

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