Method for determining fluid saturations in reservoirs
US4090398A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1977 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Jan 3, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for determining the relative amounts of two fluid phases in a subterranean formation containing one mobile phase and a substantially immobile phase. A fluid which is substantially free of the immobile phase is injected into the formation by means of a well in an amount such that a portion of the injected fluid in the formation remains unsaturated with the immobile phase. The injected fluid is then preferably produced from the formation by means of the injection well. In another embodiment, the injected fluid is produced from the formation by means of a second well. The concentration of immobile fluid dissolved in the produced fluid is measured to determine the relative amounts of the two fluid phases in the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.