Logging or measurement while tripping
US5589825A · kind A · utility
62Cited by
15References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1994 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Sep 22, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus are provided for obtaining measurements from a wellbore during tripping operations. A drilling sub is attached to the drillstring adjacent to or as near as possible to the drillbit before commencing normal drilling operations. Prior to commencing tripping operations, a logging tool is engaged within the drilling sub. The engagement of the logging tool within the drilling sub opens a window mechanism that enables the sensors of the logging tool to obtain data from the wellbore. As tripping operations are conducted, the logging tool obtains data along the length of the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.