Vinyl sulfonate amide copolymer and terpolymer combinations for

Details Vinyl sulfonate amide copolymer and terpolymer combinations for Vinyl sulfonate amide copolymer and terpolymer combinations for

Filed on

1985-01-09

Date issued

1986-08-26

Examiner

Guynn, Herbert B.

Patent Class

Compositions

SubClass

Leather or fur treating

Other Related Categories

252 8514, C09K 702

Type

Patent

Status

active

Patent number

046081828

Description

ABSTRACT:
A water-based clay drilling fluid or mud suitable for drilling at temperatures up to 200.degree. C. and pressures up to 100 psig at pH levels from 8 to 11.5, said mud or fluid containing additives which are two separate and distinct water-soluble vinyl sulfonate amide polymers. One polymer consists of a random distribution of units of the formulae ##STR1## The other polymer consists of a random distribution of units of the formula (a) and (b) as described above. In each polymer, 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.
Drilling while using this improved fluid or mud results in a reduced fluid loss rate.

REFERENCES:
patent: 4172800 (1979-10-01), Walker
patent: 4201678 (1980-05-01), Pye et al.
patent: 4309523 (1982-01-01), Engelhardt et al.
patent: 4440649 (1984-04-01), Loftin et al.
patent: 4478727 (1984-10-01), Turner et al.
George R. Gray and H. C. H. Darley, Composition and Properties of Oil Well Drilling Fluids, 4th Edition, Gulf Publishing Co., Houston, 1980, p. 20.
Royal E. Loftin, Adelina J. Son, T. M. Ballard, "Temperature-Stable Polymeric Fluid-Loss Reducer Tolerant to High Electrolyte Contamination," 59th Annual Conference and Exhibition, Houston, Sep. 16-19, 1984, Society of Petroleum Engineers of AIME (SPE 13160).

Affiliated with

Also associated with

Rating

Vinyl sulfonate amide copolymer and terpolymer combinations for does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vinyl sulfonate amide copolymer and terpolymer combinations for , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vinyl sulfonate amide copolymer and terpolymer combinations for will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2311227