Composition and method of controlling lost circulation from well

Details Composition and method of controlling lost circulation from well Composition and method of controlling lost circulation from well

1987-09-14

1989-06-06

Guynn, Herbert B.

Compositions

Leather or fur treating

175 72, C09K 700, C09K 702

Patent

active

048369403

ABSTRACT:
A method and composition for controlling the lost circulation of drilling mud in a wellbore during a drilling operation comprising the introduction of a pelletized composition, comprising a water-insoluble, water-absorbent polymer and bentonite, in a weight ratio of water-absorbent polymer to bentonite in the range of from about 9:1 to about 1:9, and preferably in the range of from about 3:1 to about 1:3, into the wellbore to reduce or eliminate drilling mud loss by sealing porous subterranean formations. The pellets essentially maintain their original size as the pellets pass through the wellbore to the site of lost circulation. At the site of lost circulation, the pellets accumulate, absorb water and swell to form an essentially fluid-tight plug. The porous subterranean formation is thereby sealed and further loss of drilling mud is prevented.

REFERENCES:
patent: 2642268 (1953-06-01), Armentrout
patent: 2836555 (1958-05-01), Armentrout
patent: 2856354 (1958-10-01), Armentrout
patent: 3909454 (1975-09-01), Arzad
patent: 4014394 (1977-03-01), Bailey
patent: 4217965 (1980-08-01), Cremeans
patent: 4526240 (1985-09-01), McKinley et al.
patent: 4551256 (1985-11-01), Kita et al.
patent: 4635726 (1987-01-01), Walker
patent: 4664816 (1987-05-01), Walker
patent: 4677174 (1987-06-01), Alexander et al.

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