Recovery of drilling fluids

Details Recovery of drilling fluids Recovery of drilling fluids

1978-02-21

1980-03-11

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

175206, C09K 700, E21B 2100, E21B 4100

Patent

active

041923928

ABSTRACT:
Recovery of drilling fluid from the mud leaving the well. The mud is first subjected to conventional separation on screens, settling tanks and/or hydrocyclones, whereafter the resulting liquid is centrifuged. The centripetal effluent of the centrifuge is recycled, alone of in mixture with non-centrifuged liquid, to the drilling tool.
The process is applicable to drilling on land and at sea, saves drilling additives, avoids the need for the maintenance of mud tips, transportation of spent mud and avoids pollution.

REFERENCES:
patent: 2870990 (1959-01-01), Bergey
patent: 2941783 (1960-06-01), Stinson
patent: 3289775 (1966-12-01), Stone
patent: 3500943 (1970-03-01), Bingham, Jr.
patent: 3684038 (1972-08-01), Nelson
patent: 3737037 (1973-06-01), Bone
patent: 3766997 (1973-10-01), Heilhecker et al.
patent: 3964557 (1976-06-01), Juvkam-Wold
Anon., "How to Reduce Fine Mud Solids for Better Drilling," The Oil and Gas Journal, Mar. 22, 1965, pp. 75-77.

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