Distributed pressure measurement system for core flood experiments
US12044609B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 2, 2020 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Mar 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0617
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Investigating the permeability and porosity of geological samples is a routine element of geological studies, and is of particular interest in the oil and gas industry. Core-flood experiments are commonly performed on rock samples to measure transport characteristics in the laboratory. This disclosure reports the design and implementation of a high resolution distributed pressure measurement system for core-flood experiments. A series of microfabricated pressure sensors can be embedded in bolts that are housed within the pressurized polymer sheath that encases a rock core. A feedthrough technology has been developed to provide lead transfer between the sensors and system electronics across a 230-bar pressure difference. The system has been successfully benchtop tested with fluids such as synthetic oil and/or gas. Pressure measurements were recorded over a dynamic range of 20 bar with a resolution as small as 0.3 mbar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.