Methods for completing thermal-recovery wells
US8392158B2 · kind B2 · utility
3Cited by
6References
20Claims
0Family size
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Inventor
Key dates
| Filing date | Jul 20, 2010 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jul 13, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for completing a well involve the use of computational models to design cement systems that are appropriate for the anticipated well conditions. Data from laboratory tests and/or numerical simulations may be employed in the models. The cement systems are designed to have a higher Young's modulus than the surrounding formation. In addition, the cement systems contain chemical-expansion agents that cause a microannulus to be deliberately formed at the cement/casing interface prior to the application of heat. The microannulus disappears during application of heat, pressure or both owing to casing expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.