Method of inhibiting lost circulation from a wellbore

Details Method of inhibiting lost circulation from a wellbore Method of inhibiting lost circulation from a wellbore

1983-10-17

1985-07-02

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

166292, 166293, E21B 3313

Patent

active

045262403

ABSTRACT:
A fibrous mass or fluff comprising a fibrous absorbent and a water-swellable hydrophilic polymer absorbent is injected into a borehole during well drilling process. The fibrous mass or fluff forms an essentially fluid-tight plug when wetted with water and acts to reduce drilling fluid loss via penetration of porous subterranean structure or formation openings.

REFERENCES:
patent: 2846390 (1958-08-01), Lummus et al.
patent: 3316965 (1967-05-01), Watanabe
patent: 3353601 (1967-11-01), Dollarhide et al.
patent: 3448800 (1969-06-01), Parker et al.

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