Method of sampling and recording information pertaining to a physical condition detected in a well bore
US4665398A · kind A · utility
97Cited by
54References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | May 6, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A physical condition in a well bore is sampled and information taken from the sample is recorded by a method of conserving electrical energy in performing such sampling and recording. The method sequentially energizes and de-energizes a plurality of different electrical circuits within the downhole apparatus with which the physical condition is detected and in which the information is recorded. The method determines when the next sample is to be taken and, depending upon how much time remains until the next sample, de-energizes the apparatus to conserve energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.