Technique for separating solids from drilling fluids

Details Technique for separating solids from drilling fluids Technique for separating solids from drilling fluids

1994-08-19

1995-06-06

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210723, 210747, C02F 152

Patent

active

054220122

ABSTRACT:
A method of removing suspended solids from drilling fluid includes preparing a dilute solution of flocculant and water, delivering a batch of the drilling fluid into the solution and agitating the mixture. The solids flocculate and then separate readily leaving a generally clear water layer on top of a solids layer. The solids are removed from the mixture by delivering them to a solids-liquid separator such as a shale shaker where the solids are discarded and the water is reclaimed and reused. Preferably, drilling mud is treated to remove solids while a well is being drilled and the reclaimed water is used in subsequent drilling operations.

REFERENCES:
patent: 4482459 (1984-11-01), Shiver
patent: 4725362 (1988-02-01), Dugat
patent: 4913585 (1990-04-01), Thompson et al.

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