Compositions – Leather or fur treating
Patent
1985-11-04
1987-10-27
Albrecht, Dennis
Compositions
Leather or fur treating
166308, 2523153, B01J 1300, C09K 300, E21B 4326
Patent
active
047028483
ABSTRACT:
An aqueous gel containing a crosslinking agent comprising an organozirconate chelate and a rate retarding agent which delays crosslinking of the gel or a rate accelerating agent which accelerates crosslinking of the gel. The retarding agent comprises a selected aldehyde or dialdehyde. The accelerating agent comprises a member selected from a group of polyamines. In the preferred embodiment, the crosslinking agent and crosslinking rate retarder or accelerator are injected simultaneously, yet independently, into an aqueous gel while introducing the gel into a subterranean formation sought to be fractured. The viscosity of the gel increases over a period of time which is controllable by altering the quantity of rate retarding agent or accelerating agent delivered in conjunction with a fixed concentration of crosslinking agent.
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patent: 4336145 (1982-06-01), Briscoe
patent: 4477360 (1984-10-01), Almond
patent: 4488975 (1984-12-01), Almond
patent: 4552215 (1985-11-01), Almond et al.
patent: 4553601 (1985-11-01), Almond et al.
patent: 4579670 (1986-04-01), Payne
Albrecht Dennis
Dowell Schlumberger Incorporated
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