Drilling fluids and methods for making the same
US10421892B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Sep 18, 2018 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Sep 18, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/062
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A mixture suitable for use in a drilling fluid includes an amount base fluid and recycled fuel oil in an amount sufficient to provide an emulsion stability of the drilling fluid of about 500 volts or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.