Non toxic, biodegradable well fluids

Details Non toxic, biodegradable well fluids Non toxic, biodegradable well fluids

1993-09-29

1996-03-12

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507905, C09K 700, C09K 706

Patent

active

054985960

ABSTRACT:
Well fluids such as drilling muds, especially useful in offshore drilling, are formulated with a hydrocarbon oil blend of a low viscosity poly alpha-olefin (PAO) such as a low molecular weight oligomer of decene together with a C.sub.10 to C.sub.18 paraffinic hydrocarbon of petroleum origin and a C.sub.10 to C.sub.18 olefin such as dodecene-1 or tetradecene-1. The fluids exhibit good biodegradability and are non-toxic to marine organisms; they also meet viscosity and pour points specifications for formulation into oil based muds.

REFERENCES:
patent: 2969321 (1961-01-01), Carpenter
patent: 4436636 (1984-03-01), Carnicom
patent: 4525285 (1985-06-01), Son et al.
patent: 4876017 (1989-10-01), Trahan et al.
patent: 5045219 (1991-09-01), Trahan et al.
patent: 5096883 (1992-03-01), Mercer et al.
patent: 5189012 (1993-02-01), Patel et al.
patent: 5432152 (1995-07-01), Dawson et al.

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