Sweep efficiency of carbon dioxide gas injection
US12158062B2 · kind B2 · utility
0Cited by
6References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 1, 2022 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Dec 1, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/305
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and systems for producing oil from a subsurface reservoir include drilling a horizontal production well into the subsurface reservoir and drilling a horizontal injection well into the subsurface reservoir below the horizontal production well. Carbon dioxide and a second gas are mixed to form a gas mixture with a density more than a density of reservoir fluids between the horizontal production well and the horizontal injection well. The gas mixture is injected into the subsurface formation through the horizontal injection well and fluid is produced from the subsurface reservoir through the horizontal production well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.