Speed control devices and methods for drop down tools
US9033038B2 · kind B2 · utility
3Cited by
15References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2012 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | May 20, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for evaluating an earth formation intersected by a wellbore may include a logging tool conveyed into the wellbore through a drilling tubular, a speed control device associated with the logging tool, and a sensor operatively associated with the logging tool. In use, the speed control device varies an annular flow space between the speed control device and a surface adjacent to control speed. The flow space may be varied using a annular member that flexes between a nominal diameter and a second larger diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.