Invert emulsions for well-drilling comprising a polydiorganosilo

Details Invert emulsions for well-drilling comprising a polydiorganosilo Invert emulsions for well-drilling comprising a polydiorganosilo

1981-02-23

1983-04-26

Guynn, Herbert B.

Compositions

Leather or fur treating

252 855R, C09K 706, E21B 4300

Patent

active

043812414

ABSTRACT:
The preparation of emulsions of light and heavy brines in a liquid hydrocarbon is described, using a polydiorganosiloxane bearing at least one polyoxyalkylene radical and at least one monovalent hydrocarbon radical having from 6 to 18 carbon atoms. The emulsions are useful in the well-drilling art as drilling fluids, completion fluids, packer fluids, spacer fluids and workover fluids because of their thermal stability and because they can be formulated to have a relatively high density, with or without added weighting agents.

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