METHOD FOR IMPROVING HIGH TEMPERATURE RHEOLOGY IN DRILLING FLUIDS.

摘要

A method for enhancing the rheology of drilling fluids that is effective for any mud weight "clay-free" invert emulsion drilling fluid, even when drilling at high temperatures. The improved rheology is effected with addition of a silicon oil to the drilling fluid. A nonlimiting example of such a rheology additive comprises polydimethylsiloxane.