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US 5,335,726 AGranted
Water control
AssigneeHalliburton Company
InventorKlein A. Rodrigues
Life of this patent
Estimating the term…
Abstract
A method of forming a gel in a subsurface formation is provided whereby a monomer is polymerized in the formation in the presence of a crosslinker by an initiator selected from azo compounds which are temperature activated over a range of temperatures. The method is particularly useful to substantially terminate or at least decrease the flow of water from a subterranean formation into a wellbore penetrating the formation.
Claims16
A method of decreasing the rate of flow of water from a subterranean formation into a wellbore penetrating said formation, said method being comprised of the steps of
- introducing into said formation at least one polymerizable water soluble vinyl monomer and at least one multifunctional vinyl monomer crosslinker together with a water soluble azo initiator and
- permitting said polymerizable monomer to polymerize and crosslink in said formation
- to thereby decrease the rate of flow of water from said formation.
Dependencies are inferred from the claim text.