Fast drilling invert emulsion drilling fluids

Details Fast drilling invert emulsion drilling fluids Fast drilling invert emulsion drilling fluids

1983-05-19

1985-04-02

Padgett, Ben R.

Compositions

Leather or fur treating

252 85M, C09K 706

Patent

active

045086281

ABSTRACT:
Disclosed are invert oil emulsion drilling fluids containing a non-toxic, biodegradable oil having a viscosity at 25.degree. C. of less than 1.5 centipoise, a flash point of at least 60.degree. C., an aniline point of at least 80.degree. C., and a content of aromatic hydrocarbons of less than 1% by volume. These drilling fluids have a low viscosity at the high shear rates imparted to a drilling fluid at the bit during drilling. This low bit viscosity provides for faster penetration rates. Such drilling fluids containing a temperature stabilizing additive exhibit superior thermal stability.

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