Method and compositions for fluid loss and seepage loss control

Details Method and compositions for fluid loss and seepage loss control Method and compositions for fluid loss and seepage loss control

1982-10-25

1985-07-30

Guynn, Herbert B.

Boring or penetrating the earth

Processes

Boring with specific fluid

252 85C, 252 85LC, 252 85P, C09K 706, E21B 700

Patent

active

045315949

ABSTRACT:
Disclosed is a method of and compositions for reducing the fluid loss from a drilling fluid which allows a low colloid, enhanced penetration rate drilling fluid to be used in a drilling operation. The invention provides a concentrated suspension or pill of a fluid loss control additive and a seepage loss control additive in a liquid which is compatible with the drilling fluid. This pill is circulated throughout a borehole containing the drilling fluid and thereafter isolated from the drilling fluid upon reaching the surface. The fluid loss control additive and the seepage loss control additive deposit on the sides of the borehole, thus reducing the loss of fluid to the formations drilled, and the excess not deposited is subsequently isolated from the drilling fluid so as not to be dispersed throughout the drilling fluid and substantially increasing the colloid content of the drilling fluid.

REFERENCES:
patent: 3040821 (1962-06-01), Widess
patent: 3140747 (1964-07-01), Mitacek
patent: 3208523 (1965-09-01), Coyle et al.
patent: 3310125 (1967-03-01), Darley
patent: 3494865 (1970-02-01), Andrews et al.
patent: 3574099 (1971-04-01), Ryals et al.
patent: 3671427 (1972-06-01), Andrews et al.
patent: 3880764 (1975-04-01), Donham
patent: 4404107 (1983-09-01), Cowan et al.
patent: 4428843 (1984-01-01), Cowan et al.

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