Apparatus and method for measuring apparent permeability of tight rock core
US10801943B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 22, 2018 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Dec 28, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present application provides an apparatus and a method for measuring apparent permeability of a tight rock core, the apparatus comprises: a rock core holder, a first high-pressure injection pump, a second high-pressure injection pump, a micro-differential pressure meter, a micro-flow meter, a first pressure control unit, a second pressure control unit, a first valve, a second valve, a third valve, and a fourth valve; the first pressure control unit comprises: a first pressure-resistant piston container and a second pressure-resistant piston container, both of which are divided into an upper cavity and a lower cavity by a piston, the upper cavities of the first pressure-resistant piston container and the second pressure-resistant piston container are filled with gases and communicate with each other, and the lower cavity of the first pressure-resistant piston container is filled with pump pressure-transmission liquids, and the lower cavity of the second pressure-resistant piston container is filled with experimental fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.