Drilling fluid and method

Details Drilling fluid and method Drilling fluid and method

1975-05-30

1981-11-10

Guynn, Herbert B.

Compositions

Leather or fur treating

252 85C, C09K 702

Patent

active

042997100

ABSTRACT:
The application discloses a viscous aqueous alkaline drilling liquid (fluid) essentially free of clays, for drilling subterranean wells, and a method of drilling such wells. The fluid is circulated into and out of the well, to flush out drill cuttings. The alkaline composition comprises a combination of the thickeners (a) 10 to 90 parts by weight of an addition polymer of an unsaturated carboxylic acid, preferably in the form of a copolymer with another ethylenically unsaturated monomer, for example a copolymer of a major amount of methacrylic acid and a minor amount of ethyl acrylate, the polymer having a molecular weight of from 125,000 to 12,000,000 solubilized in the aqueous system by an alkali such as sodium carbonate, and (b) 10 to 90 parts by weight of a water soluble polysaccharide, or a water soluble derivative thereof ("polysaccharide" being used herein in a generic sense to include such derivatives) such as hydroxyethyl cellulose, the total amount of (a) plus (b) being 100 parts.

REFERENCES:
patent: 2718497 (1955-09-01), Oldham et al.
patent: 2961400 (1960-11-01), Park
patent: 3018245 (1962-01-01), Owen
patent: 3047493 (1962-07-01), Rosenberg
patent: 3654164 (1972-04-01), Sperry
patent: 3668122 (1972-06-01), Branscum
patent: 3738437 (1973-06-01), Scheuerman
patent: 3852201 (1974-12-01), Jackson
patent: 3878110 (1975-04-01), Miller
patent: 3919092 (1975-11-01), Norton et al.

Affiliated with

Also associated with

Rating

Drilling fluid and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drilling fluid and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling fluid and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2361643