Process and program for characterising evolution of an oil reservoir over time
US7577061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2007 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/614
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Evolution of an hydrocarbon reservoir in the process of producing is carried out by co-analyzing the changes in the propagation times and seismic amplitudes of a seismic wavelet along propagation paths in the ground. A base survey of the reservoir is provided, with a set of seismic traces at a first time T associated to a first velocity field Vb; a monitor survey of the reservoir is provided, the monitor survey being taken at a second time T+ΔT, with a set of seismic traces associated to the same positions as in the base survey; the monitor survey is associated to a second velocity field Vm. For a set of points i in the base survey, one computes over the points of the set the sum S of a norm of the difference between
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.