Additive systems for control of fluid loss in aqueous drilling f

Details Additive systems for control of fluid loss in aqueous drilling f Additive systems for control of fluid loss in aqueous drilling f

1985-04-11

1986-12-02

Guynn, Herbert B.

Compositions

Leather or fur treating

252 8514, C09K 702

Patent

active

046263624

ABSTRACT:
Various water-soluble additives, either alone or in various combinations, for use in water-based clay drilling fluids. The additives are an acrylate polymer, an acrylate propylene glycol copolymer and three structurally different sulfonate amide polymers. One of the sulfonate amide polymers is a terpolymer consisting of a random distribution of units of the formulae ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each is hydrogen, methyl, or ethyl, and X.sup.+ is a cation. A second sulfonate amide polymer is a copolymer consisting only of a random distribution of units (a) and (b). The third sulfonate amide polymer is a copolymer consisting of 2-acrylamido-2-methyl propane sulfonic acid and acrylamide. The acrylate polymer is of the formula ##STR2## while the acrylate propylene glycol copolymer is of the formula ##STR3## Drilling operations using a drilling fluid containing these compositions can be carried out at pH levels from about 8 to 11.5 and at temperatures up to about 220.degree. C. The use of the above compositions in a water-based clay drilling fluid results in a reduced fluid loss rate.

REFERENCES:
patent: 2552775 (1951-05-01), Fischer et al.
patent: 4172800 (1979-10-01), Walker
patent: 4201678 (1980-05-01), Pye et al.
patent: 4268400 (1981-05-01), Lucas et al.
patent: 4283517 (1981-08-01), Perricone et al.
patent: 4293427 (1981-10-01), Lucas et al.
patent: 4309329 (1982-01-01), Lucas et al.
patent: 4309523 (1982-01-01), Engelhardt et al.
patent: 4357245 (1982-11-01), Engelhardt et al.
patent: 4440649 (1984-04-01), Loftin et al.
patent: 4451631 (1984-05-01), Engelhardt et al.
patent: 4471097 (1984-09-01), Uhl et al.
patent: 4478727 (1984-10-01), Turner et al.
patent: 4502964 (1985-03-01), Giddings et al.
patent: 4502965 (1985-03-01), Giddings et al.
patent: 4502966 (1985-03-01), Giddings et al.
patent: 4547299 (1985-10-01), Lucas
Commercial Bulletin on Uses and Properties of Natrol 42 and Similar Materials, by National Starch and Chemical Corporation, Bridgewater, N.J.
George R. Gray and H. C. H. Darley, Composition and Properties of Oil Well Drilling Fluids, Gulf Publishing Co., Houston (1980), p. 20.
J. M. Lucas, D. P. Enright, and A. C. Perricone, Development of Vinylsulfonate Copolymers for Water-Base Drilling Muds, Symposium on Advances in Oilfield Chemicals and Chemistry, American Chemical Society, St. Louis Meeting, Apr. 8-13, 1984.

Affiliated with

Also associated with

Rating

Additive systems for control of fluid loss in aqueous drilling f does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Additive systems for control of fluid loss in aqueous drilling f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Additive systems for control of fluid loss in aqueous drilling f will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2291484