Method of analyzing a petroleum reservoir
US9074460B2 · kind B2 · utility
4Cited by
1References
20Claims
0Family size
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Key dates
| Filing date | Jan 18, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Jul 1, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/088
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of evaluating a gradient of a composition of materials in a petroleum reservoir, comprising sampling fluids from a well in the petroleum reservoir in a logging operation, measuring an amount of contamination in the sampled fluids, measuring the composition of the sampling fluids using a downhole fluid analysis, measuring an asphaltene content of the sampling fluids at different depths; and fitting the asphaltene content of the sampling fluids at the different depths to a simplified equation of state during the logging operation to determine the gradient of the composition of the materials in the petroleum reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.