Restoring lost circulation

Details Restoring lost circulation Restoring lost circulation

1975-05-19

1977-03-29

Guynn, Herbert B.

Boring or penetrating the earth

Processes

Boring with specific fluid

252 85LC, C09K 702, E21B 33138

Patent

active

040143945

ABSTRACT:
A magnesium oxide-bentonite slurry having a controlled gelation time and capable of gelling to a firm set gel is used to restore lost circulation during well drilling operations.

REFERENCES:
patent: 1867063 (1932-07-01), Dawe
patent: 1943584 (1934-01-01), Cross
patent: 3185642 (1965-05-01), Sawyer et al.
Rogers, Composition and Properties of Oil Well Drilling Fluids, Gulf Pub. Co., Third Edition, 1963, pp. 658-662.

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