Glycol solution drilling system

Details Glycol solution drilling system Glycol solution drilling system

1997-11-20

2000-08-15

Warden, Jill

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

507110, 507136, 507140, 507213, E21B 2114, C09K 702

Patent

active

061036714

ABSTRACT:
The invention provides water base well drilling and servicing fluids containing a biopolymer viscosifier and a water soluble polyalkylene glycol shale stabilizing additive therein having enhanced thermal stability, as indicated by the low shear rate viscosity at 0.06 sec.sup.-1, the enhanced thermal stability being provided by an amorphous silica viscosifier therein.
A method of enhancing the thermal stability of aqueous base well drilling and servicing fluids containing a biopolymer viscosifier and a water soluble polyalkylene glycol shale stabilizing additive therein is disclosed which comprises adding to the fluid an amorphous silica viscosifier.

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