Packer-packer vertical interference testing
US9714570B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2014 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Aug 30, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool having multiple packers and a controller operable to operate the packers to establish upper, middle, and lower intervals. The controller then establishes the upper and lower intervals at formation pressure, and establishes the middle interval at hydrostatic pressure. The controller then creates a pressure signal in one of the upper and lower intervals and then records a resulting pressure transient in both of the upper and lower intervals. The controller is also operable to establish the middle interval at formation pressure and establish the upper and lower intervals at below hydrostatic pressure but above formation pressure, and then create the pressure signal in the middle interval and subsequently record a resulting pressure transient in the middle interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.