Compositions and methods for completing subterranean wells
US9376607B2 · kind B2 · utility
41Cited by
15References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2009 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Aug 19, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed are compositions and methods for providing fluid-loss control in subterranean wells. Well-completion fluids contain fine particulate additives whose glass-transition temperatures are below the anticipated bottomhole temperature. The particles soften upon injection into the well, whereupon they soften and become deformable. The particles then migrate to the borehole wall and form a seal that reduces further fluid flow from the borehole into the formation. The additive may be supplied as a powder or in the form of a liquid suspension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.