Compositions – Leather or fur treating
Patent
1983-02-04
1985-07-02
Guynn, Herbert B.
Compositions
Leather or fur treating
166295, 166284, E21B 33138
Patent
active
045266956
ABSTRACT:
The present invention relates generally to the composition and method for reducing the permeability of subterranean formations penetrated by a wellbore. The composition of the present invention comprises a wellbore fluid having dispersed therein a fluid loss control agent comprising a polyester polymer which is substantially insoluble in the wellbore fluid. The polymer degrades in the presence of water at an elevated temperature to form small molecules which are soluble in a fluid in the subterranean formation. The method of the present invention comprises reducing the permeability of subterranean formations penetrated by a wellbore by placing the composition of the present invention down the wellbore.
REFERENCES:
patent: 2362511 (1939-11-01), Teeters
patent: 3302719 (1967-02-01), Fischer
patent: 3708560 (1973-06-01), Mayer et al.
patent: 3784585 (1974-01-01), Schmitt et al.
patent: 3989632 (1976-11-01), Fischer et al.
Cooke, Jr. Claude E.
Epstein Michael M.
Erbstoesser Steven R.
Sinclair Richard G.
Caress Virginia B.
Delflache Marc L.
Exxon Production Research Co.
Guynn Herbert B.
Riley, Jr. James J.
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