04715967 is referenced by 163 patents and cites 4 patents.

This invention relates to a composition and method of temporarily reducing the permeability of subterranean formations penetrated by a wellbore. In particular, it relates to an inexpensive, low molecular weight condensation product of hydroxy acetic acid with itself or compounds containing other hydroxy-, carboxylic-acid-, or hydroxycarboxylic-acid moieties and method for preventing fluid loss during well treatment.

Title
Composition and method for temporarily reducing permeability of subterranean formations
Application Number
6/822589
Publication Number
4715967
Application Date
December 27, 1985
Publication Date
December 29, 1987
Inventor
Edward F McBride
Wilmington
DE, US
Harold E Bellis
Wilmington
DE, US
Agent
Craig H Evans
Assignee
E I Du Pont de Nemours and Company
DE, US
IPC
E21B 43/26
E21B 43/27
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