Methods and oil-based settable spotting fluid compositions for cementing wells
US6716282B2 · kind B2 · utility
109Cited by
39References
54Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Jan 12, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/928
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Oil-based settable spotting fluid compositions for cementing in wells and subterranean formations are provided. The oil-based settable spotting fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant, a hydraulically settable component and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.