| US 7,488,705 B2 | ||
| Oilwell sealant compositions comprising alkali swellable latex | ||
| B. Raghava Reddy, Duncan, Okla. (US); Mark R. Savery, Duncan, Okla. (US); Krishna M. Ravi, Kingwood, Tex. (US); and Donald L. Whitfill, Kingwood, Tex. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Duncan, Okla. (US) | ||
| Filed on Dec. 08, 2004, as Appl. No. 11/10,117. | ||
| Prior Publication US 2006/0122071 A1, Jun. 08, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. E21B 33/13 (2006.01); E21B 43/00 (2006.01); C09K 8/00 (2006.01) | ||
| U.S. Cl. 507—219 [507/118; 507/119; 507/125; 507/221; 507/224; 507/231; 507/269; 166/294; 166/300] | 64 Claims |
| 1. A method of servicing a wellbore in contact with a subterranean formation, comprising:
(A) separately introducing an alkali swellable latex and a pH increasing material to a wellbore; and
(B) contacting the alkali swellable latex with the pH increasing material to form a sealant composition in situ within the
wellbore,
wherein the sealant composition further comprises a non-alkali swellable latex.
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