Method of improving cleanout of a wellbore
US9506317B2 · kind B2 · utility
12Cited by
14References
20Claims
0Family size
Assignee
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Key dates
| Filing date | May 1, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jun 22, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A barrier onto the surface of a subterranean formation may be formed by pumping into a wellbore within a well hydrophobically modified polysaccharides. A pressure differential is created between the reservoir pressure and formation pressure within the well. The micellular hydrophobically modified polysaccharides self-align onto the face of the formation to form the barrier. Flow of fluids into the subterranean formation is thereby prohibited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.