| US 7,595,283 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. 11/471,738. | ||
| Application 11/471738 is a division of application No. 10/760443, filed on Jan. 20, 2004. | ||
| Prior Publication US 2006/0234874 A1, Oct. 19, 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] | 33 Claims |
| 1. A method for treating a subterranean formation penetrated by a well bore to reduce its permeability to aqueous-based fluids
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
injecting into the subterranean formation penetrated by a well bore said permeability-modifying aqueous treatment fluid, wherein
the hydrophobically modified water-soluble polymer reduces the permeability of the subterranean formation to aqueous-based
fluids.
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