System and process for secondary hydrocarbon recovery
US6152226A · kind A · utility
20Cited by
25References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | May 11, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydrocarbon reservoir undergoing secondary recovery is subject to a first and then at least a second gravity gradient survey in which a gravity gradiometer takes gradient measurements on the surface above the reservoir to define successive data sets. The differences between the first and subsequent gravity gradient survey yields information as to sub-surface density changes consequent to displacement of the hydrocarbon and the replacement thereof by the driveout fluid including the position, morphology, and velocity of the interface between the hydrocarbon to be recovered and the driveout fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.