Application of degradable fibers in invert emulsion fluids for fluid loss control
US8181702B2 · kind B2 · utility
2Cited by
18References
22Claims
0Family size
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Key dates
| Filing date | Jun 17, 2010 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Jun 17, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of treating a subterranean formation including emplacing in a wellbore a fluid, comprising an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one degradable material, and at least one bridging material, and contacting the formation with the fluid. A method and apparatus related to an invert emulsion fluid loss pill including an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one degradable material, wherein the degradable material hydrolyzes to release an organic acid, and at least one bridging material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.