Method and apparatus for correcting a pressure measurement for the influence of temperature
US5394345A · kind A · utility
45Cited by
18References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1994 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Jun 13, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/085
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method of correcting the measurements of a pressure gauge for the influence of temperature transients. In a preferred embodiment, a correction term is added to the pressure value measured at an instant t, the correction term A.sub.O [T(t+.tau.)-T(t)] being proportional to the difference between the temperature T(t+.tau.) measured after a time interval of duration .tau. has elapsed from instant t, and the temperature T(t) at instant t. The invention is applicable to measurements in oil wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.