Apparatus and method for conditioning oil well drilling fluid

Details Apparatus and method for conditioning oil well drilling fluid Apparatus and method for conditioning oil well drilling fluid

1981-09-23

1984-04-24

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

175206, E21B 700

Patent

active

044442777

ABSTRACT:
An apparatus and associated method for conditioning or reconditioning oil well drilling mud, comprising multiple hoppers for holding dry additive. Each hopper has a mechanism permitting the additive to be fed into an entrainment chamber at controlled, pre-selected rates. The additives are thus mixed at controlled rates with a free jet of mud forced across the entrainment chamber, to quickly achieve the desired density, viscosity and other properties of the mud. An augur is used to force the dry additive through an adjustable gate valve to control the additive flow rate. Or, the augur may be rotated at selected rates, and a fixed area additive flow passage employed between the hopper and the entrainment chamber.

REFERENCES:
patent: 2571247 (1951-10-01), Huebotter
patent: 2683622 (1954-07-01), Dragon
patent: 2786651 (1957-03-01), Mickle
patent: 2923151 (1960-02-01), Engle et al.
patent: 3267615 (1966-08-01), Moore
patent: 4353803 (1982-10-01), Dover, Jr.
patent: 4357953 (1982-11-01), Patterson

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