Well drilling and servicing fluids which deposit an easily remov

Details Well drilling and servicing fluids which deposit an easily remov Well drilling and servicing fluids which deposit an easily remov

1996-10-16

1998-07-21

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Well treating

Contains inorganic component other than water or clay

507110, 507111, 507140, 507211, 507212, 507213, 507272, 507906, 166300, C09K 702

Patent

active

057835276

ABSTRACT:
The invention provides alkaline water base well drilling and servicing fluids which deposit an easily degradable and removable filter cake on the sides of a borehole during well drilling and servicing operations. The fluids contain one or more polysaccharide polymers, sized bridging particles, and a peroxide selected from the group consisting of alkaline earth metal peroxides, zinc peroxide, and mixtures thereof. The fluids deposit a filter cake containing the peroxide.

REFERENCES:
patent: 4440651 (1984-04-01), Weisrock
patent: 5019289 (1991-05-01), Gray et al.
patent: 5238065 (1993-08-01), Mondshine et al.
patent: 5447199 (1995-09-01), Dawson et al.
patent: 5607905 (1997-03-01), Dobson, Jr. et al.
patent: 5624886 (1997-04-01), Dawson et al.

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