Compositions – Leather or fur treating
Patent
1989-06-19
1990-10-02
Stoll, Robert L.
Compositions
Leather or fur treating
2523153, E21B 4326
Patent
active
049605275
ABSTRACT:
An improved fracturing fluid for use in hydraulic fracturing of subterranean formations and comprising an aqueous fluid containing an effective amount of a guar containing gelling agent, an effective amount of a crosslinking agent to crosslink the gelling agent and a retarding agent for delaying the crosslinking reaction. The crosslinking agent is a rare earth metal containing compound, such as a ceric salt. The retarding agent for the ceric salt comprises a first mixture consisting essentially of about 1 part of a carboxylic acid and from about 1 to 1000 parts of the alkali metal salt of the carboxylic acid. The retarding agent further comprises a second mixture consisting essentially of about 1 part of a hydroxycarboxylic acid and from about 1 to 1000 parts of its alkali metal salt or about 1 part of an aminocarboxylic acid to from about 1 to 1000 parts of its alkali metal salt.
REFERENCES:
patent: 3919015 (1975-11-01), Bolza
patent: 4018286 (1977-04-01), Gall et al.
patent: 4021355 (1977-05-01), Holtmyer et al.
patent: 4462917 (1984-07-01), Conway
patent: 4470915 (1984-09-01), Conway
patent: 4477360 (1984-10-01), Almond
patent: 4502967 (1985-03-01), Conway
patent: 4505826 (1985-03-01), Horton
patent: 4579670 (1986-04-01), Payne
patent: 4657081 (1987-04-01), Hodge
Handbook of Chemistry and Physics, thirty-fifth edition, 1953, p. 1624, Garrett et al.
Chemistry: A Study of Matter, 2nd. Edition, Pub. 1972, by Xerox Corp., p. 402.
Burdick Glen M.
McCarthy Bill D.
Rhone-Poulenc Inc.
Sayala Chhaya
Stoll Robert L.
LandOfFree
Delayed crosslinking of guar gelling agents with ceric salts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Delayed crosslinking of guar gelling agents with ceric salts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delayed crosslinking of guar gelling agents with ceric salts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-290781