Rare earth oxide as a weighting and bridging agent
US11078401B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jul 19, 2018 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Mar 1, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods of treating a subterranean formation and treatment fluids are discussed herein. The methods generally include treating the subterranean formation with a rare earth oxide by providing a first treatment fluid having a density of at least about 10 pounds per gallon including a rare earth oxide; and introducing the first treatment fluid into the subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.