Method to detect incremental oil production arising from a low salinity waterflood
US10815777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2017 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Oct 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting incremental oil production from an oil-bearing reservoir includes taking a baseline sample of the oil and analyzing the baseline sample of oil to establish a baseline compositional signature for the oxygen-containing organic compounds in the oil. In addition, the method includes commencing a low salinity waterflood by injecting a low salinity water into the reservoir from an injection well. Further, the method includes recovering oil from a production well. Still further, the method includes taking post-flood samples of the oil produced from the production well over time. The method also includes analyzing the post-flood samples of oil to establish post-flood compositional signatures for the oxygen-containing organic compounds in the oil. Moreover, the method includes identifying a difference between one or more of the post-flood compositional signatures and the baseline compositional signature that is characteristic of incremental oil released by the low salinity waterflood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.