Subterranean formation treating with delayed crosslinking gel fl

Details Subterranean formation treating with delayed crosslinking gel fl Subterranean formation treating with delayed crosslinking gel fl

1988-04-18

1989-01-24

Suchfield, George A.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166294, 166308, E21B 33138, E21B 4326

Patent

active

047995505

ABSTRACT:
A method of treating a subterranean formation with delayed crosslinking gel fluids is provided. An aqueous gel is first prepared by admixing an organic carboxylated gelling agent with an aqueous liquid. A buffer is combined with the aqueous gel in an amount sufficient to result in and maintain the pH thereof at a level of about 5 or above at ambient temperature. A zirconium IV-containing crosslinking compound is combined with the gel and the mixture is introduced into a subterranean formation whereby the mixture is heated and caused to crosslink.

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patent: 4657081 (1987-04-01), Hodge

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