Method of monitoring the spacial production of hydrocarbons from a petroleum reservoir
US4479204A · kind A · utility
Inventor
Key dates
| Filing date | Jun 1, 1981 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Jun 1, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In the injection of fluids into subsurface geological formations, such as for the purpose of recovering a mineral in that formation, it is important that the flow progress of that fluid is known at all points in the subsurface. This information is provided by injecting a selected fluid into the formation. This fluid may be a gas, or a liquid, or a mixture of gas and liquid. When this fluid is in the subsurface formation there will be a mixture of gas and liquid in selected proportion in the formation. This mixture in a geologic formation overlain by a shale, for example, will have a much higher reflection coefficient. A source of seismic waves is operated at the surface, and the received reflections are compared between spaced positions on the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.