Method and device for testing wettability of dense oil reservoir
US10422733B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2017 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Nov 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are methods for testing wettability of tight oil reservoir. The method comprises: by using a nuclear magnetic resonance testing method, testing nuclear magnetic resonance maps of the tight oil reservoir in the saturated water state and in the saturated oil state; by using the nuclear magnetic resonance maps, analyzing a water-wetting degree and an oil-wetting degree of the tight oil reservoir; calculating a mixed wettability index of the tight oil reservoir, and estimating the wettability of the tight oil reservoir according to the mixed wettability index. This disclosure can effectively improve testing efficiency, quantitatively analyze the water-wetting degree and the oil-wetting degree of the tight oil reservoir, and improve accuracy of testing results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.