Measurements of properties and transmission of measurements in subterranean wells
US6644110B1 · kind B1 · utility
27Cited by
15References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Sep 16, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system of measuring properties, such as pressure, and transmitting measurements in a subterranean well. In a described example, a valve system includes a valve having a closure member. A sensor senses a pressure differential across the closure member. A tool positioned in the valve transmits power to the valve to operate the sensor, and the sensed pressure differential is transmitted from the valve to the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.