Compositions – Leather or fur treating
Patent
1984-03-26
1986-04-01
Albrecht, Dennis L.
Compositions
Leather or fur treating
166308, 2523153, B01J 1300, C09K 300, E21B 4326
Patent
active
045796700
ABSTRACT:
A method of controlling crosslinking reaction rate in a water based polymer fracturing fluid that involves using a mixture of a crosslinker, in combination with a crosslinking rate accelerator or a crosslinking rate retarder at a ratio such that the crosslinking reaction rate is controlled. This decreases the shear effects upon the polymer fracturing fluid during pumping which affects downhole stability of the fluid and decreases pumping and frictional pressures. The ratio of rate accelerator or rate retarder to crosslinker for a desired crosslinking reaction time is dependent upon pH, surface temperature, polymer concentration, salt concentrations, fluid loss additives, surfactant types and concentrations, mutual solvents and alcohol. The preferred polymer fracturing fluid is a high pH aqueous salt solution including a hydroxypropyl guar polymer. The preferred crosslinkers are transition metal chelates. The preferred crosslinking rate accelerators are polyamines. The preferred crosslinking reaction rate retarders are glyoxal and triethanolamine. Batch mixing of the polymeric fracturing fluid, crosslinker and rate accelerator or rate retarder is possible; however in the preferred embodiment the crosslinker and accelerator or retarder are injected simultaneously with the polymeric fracturing fluid so that the crosslinking reaction rate can be continuously adjusted in response to changing conditions.
REFERENCES:
patent: 2955753 (1957-05-01), O'Conor et al.
patent: 3036214 (1955-11-01), Forni et al.
patent: 3251781 (1966-05-01), Jordan
patent: 3615794 (1971-10-01), Nimerick
patent: 3898165 (1975-08-01), Ely et al.
patent: 3974077 (1976-08-01), Free
patent: 4021355 (1977-05-01), Holtmyer et al.
patent: 4033415 (1977-07-01), Holtmyer et al.
patent: 4040484 (1977-08-01), Hessert
patent: 4071467 (1978-01-01), Nordgren
patent: 4110230 (1978-08-01), Hessert
patent: 4210106 (1980-07-01), Ely et al.
patent: 4259205 (1981-03-01), Murphey
patent: 4272384 (1981-06-01), Martin
patent: 4460751 (1984-07-01), Hanlon
patent: 4464270 (1984-08-01), Hollenbeak
patent: 4470915 (1984-09-01), Conway
patent: 4477360 (1984-10-01), Almond
patent: 4502967 (1985-03-01), Conway
Albrecht Dennis L.
Big Three Industries, Inc.
LandOfFree
Control of crosslinking reaction rate of aqueous fracturing flui does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of crosslinking reaction rate of aqueous fracturing flui, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of crosslinking reaction rate of aqueous fracturing flui will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1083487