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U.S. Department of Energy
Office of Scientific and Technical Information

Consolidation of subterranean formations

Patent ·
OSTI ID:6178057
In this method of consolidating incompetent earth formations which contain relatively high porportions of clayey materials, liquid resin is injected into the formation and then hardened by the action of a curing agent or catalyst, otherwise adsorbable by the clays. The earth formation in the consolidtion zone is first treated with successive solvent injection to remove connate oil and water. Prior to the injection of resin or resin-catalyst mixtures into the earth formations, the clayey materials are rendered inert to the adsorbable catalysts by first treating the formation with a liquid solution of an alkylphenoxy polyethoxy ethanol in sufficient quantity to satisfy the adsorption capacity of the clay. The alkylphenoxy polyethoxy ethanol is adsorbed on the surfaces of the clay particles sufficiently to render the clay wholly or partially nonadsorbent for the subsequently injected catalyst. The catalyst remains in solution with the resin and is available for catalysis of the polymerization reaction. (18 claims)
Assignee:
Union Oil Co.
Patent Number(s):
US 3384174
OSTI ID:
6178057
Country of Publication:
United States
Language:
English