Downhole build-up pressure test using coiled tubing
US6116340A · kind A · utility
13Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Dec 24, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and an apparatus for carrying out a downhole shut-in, pressure build-up test of a formation by lowering a string of coiled tubing having a pressure sensor and a packer thereon through the production tubing of the well. The packer is set to isolated the formation and the pressure is then measured by the pressure sensor. If the well is not flowing due to fluid standing in the wellbore, the well is first unloaded by flowing fluid down the coiled tubing to lift the fluid and reestablish flow into the well prior to setting the packer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.