Method and apparatus for separating drilling and production flui

Details Method and apparatus for separating drilling and production flui Method and apparatus for separating drilling and production flui

1991-11-25

1992-07-14

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

175206, 175207, E21B 2106, E21B 704

Patent

active

051294680

ABSTRACT:
In a drilling system where production fluids are produced during the drilling operation, a brine solution is used to prevent development of a filter cake on the formation and thereby in the absence of such filter cake, allow production to occur. A separation system at the surface separates out the gas component of the produced fluids, the fluidized particulate drill cuttings, and produced oil, to return a reusable drilling fluid to the system, which drilling fluid is substantially depleted of hydrocarbons so as to make the fluid usable. The separation system uses a hydrocyclone for processing an oily water phase to thereby minimize the complexity and cost of the oil/water separation portion of the drilling fluids system.

REFERENCES:
patent: 3016962 (1962-01-01), Lummus et al.
patent: 3500943 (1970-03-01), Bingman, Jr.
patent: 4192392 (1980-03-01), Messines et al.
patent: 4666471 (1987-05-01), Cates
patent: 4725362 (1988-02-01), Dugat
patent: 5010966 (1991-04-01), Stokley et al.

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