Subsurface transient pressure testing apparatus and method of use thereof
US3965978A · kind A · utility
15Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1974 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Nov 6, 1994 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Wireline apparatus and method for measuring pressure downhole in well tubing comprising a main plug body which seats in a seating nipple forming part of the tubing, a pressure gauge in communication with the tubing below the main plug body, and means for equalizing the tubing pressure above and below the seated main plug body so that the apparatus may be removed from the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.