| US 7,589,048 B2 | ||
| Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation | ||
| Larry S. Eoff, Duncan, Okla. (US); Eldon D. Dalrymple, Duncan, Okla. (US); and B. Raghava Reddy, Duncan, Okla. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Duncan, Okla. (US) | ||
| Filed on Jun. 20, 2006, as Appl. No. 11/471,148. | ||
| Application 11/471148 is a division of application No. 10/760443, filed on Jan. 20, 2004. | ||
| Prior Publication US 2006/0240994 A1, Oct. 26, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. C09K 8/588 (2006.01); C09K 8/88 (2006.01); C09K 8/90 (2006.01) | ||
| U.S. Cl. 507—212 [507/214; 507/222; 507/244; 507/246; 507/259; 507/261; 166/305.1; 166/306] | 32 Claims |
| 1. A method for fracturing a subterranean formation comprising:
providing a permeability-modifying aqueous treatment fluid comprising:
a hydrophobically modified water-soluble polymer that has a molecular weight in the range of about 100,000 to about 10,000,000
once synthesized and comprises a polymer backbone and a hydrophobic branch, the polymer backbone comprising polar heteroatoms,
the hydrophobic branch comprising an organic acid derivative selected from the group consisting of: an anhydride of octenyl
succinic acid, an ester of octenyl succinic acid, an amide of octenyl succinic acid, an anhydride of dodecenyl succinic acid,
an ester of dodecenyl succinic acid, and an amide of dodecenyl succinic acid; and
placing the permeability-modifying aqueous treatment fluid into the subterranean formation at a pressure sufficient to create
or enhance at least one fracture therein, wherein the hydrophobically modified water-soluble polymer reduces the permeability
of the subterranean formation to aqueous-based fluids.
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