Methods of treating wellbores with recyclable fluids
US7776796B2 · kind B2 · utility
2Cited by
22References
24Claims
0Family size
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Key dates
| Filing date | Aug 16, 2006 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Jun 17, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/927
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for treating wellbores using fluids containing a sphingan heteropolysaccharide which contributes viscosity stability and a decrease in friction pressure. Some methods are clean-out operations using recyclable-viscosity fluids containing at least a sphingan heteropolysaccharide and an optional salt. Others include methods of pumping fluids incorporating sphingan heteropolysaccharides to reduce pumping frictional pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.