Non-aqueous breaker fluids and methods of use thereof
US8881822B2 · kind B2 · utility
1Cited by
5References
29Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 3, 2009 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Aug 9, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of cleaning a wellbore drilled with an oil-based drilling fluid that forms an oil-based filter cake may include: emplacing a breaker fluid into the wellbore, the breaker fluid comprising: a water-miscible non-aqueous fluid; at least one weighting salt; and at least one breaking agent; and shutting in the well for a period of time sufficient to initiate breaking of the oil-based filter cake.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.