Method and device for determining concentration of surfactant solution for oil displacement by imbibition
US12372452B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2025 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2045 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2823
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method and device for determining the surfactant concentration for oil displacement by imbibition. The method includes the following steps: providing a tank for holding the surfactant solution and a capillary tube; adding the surfactant solution with a first preset concentration into the tank; injecting crude oil into the capillary tube, a liquid level difference ΔH is generated between a liquid level of the capillary tube and the liquid level of the tank; recording data of the ΔH varying over time, and calculating an imbibition dynamic and resistance ratio of the surfactant solution with the first preset concentration based on the data; repeating the steps for each surfactant solution with different concentration; and determining the optimal concentration under the best oil displacement effect of the surfactant solution based on the imbibition dynamic and resistance ratios of the surfactant solutions with different concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.