Application of degradable fibers in invert emulsion fluids for kill pills
US8162056B2 · kind B2 · utility
1Cited by
3References
25Claims
0Family size
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Key dates
| Filing date | Jun 17, 2009 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Apr 22, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of treating a subterranean formation includes pumping into a cased, perforated wellbore that intersects the formation an invert emulsion kill fluid, the invert emulsion kill fluid comprising: an oleaginous continuous phase; a non-oleaginous discontinuous phase; an emulsifier; at least one degradable material; and at least one bridging material; contacting the formation with the kill fluid; and allowing the degradable material to at least partially degrade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.