Oxidizing gasses for carbon dioxide-based fracturing fluids
US11319478B2 · kind B2 · utility
4Cited by
282References
13Claims
0Family size
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Key dates
| Filing date | Jul 24, 2020 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Jul 24, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/601
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Unconventional hydrocarbon source rock reservoirs can contain the organic material kerogen, intertwined with the rock matrix. The kerogen can alter the tensile strength of the rock and contribute to higher fracture energy needs. To degrade kerogen and other organic materials, oxidizing gasses are dissolved in carbon dioxide (CO2) which is then used as part of a fracturing fluid. The oxidizing gasses can be dissolved directly in the CO2 or generated in situ using precursors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.