Methods of plugging a permeable zone downhole using a sealant composition comprising a crosslinkable material and a reduced amount of cement
US7267174B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 24, 2005 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Sep 15, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of servicing a wellbore, comprising preparing a sealant composition comprising a crosslinkable material, a crosslinking agent, a fluid loss control additive, and water, placing the sealant composition in a permeable zone in the wellbore, and allowing the sealant composition to set. A method of servicing a wellbore, comprising preparing a sealant composition by combining a crosslinkable material, a crosslinking agent, a fluid loss control additive, water, and a cement, wherein an amount of the cement is reduced to an effective amount to increase a gel time of the sealant composition to greater than or equal to about 4 hours when the sealant composition is exposed to ambient temperatures in the wellbore, placing the sealant composition in a permeable zone in the wellbore, and allowing the sealant composition to gel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.