Emergency downhole disconnect tool
US5323853A · kind A · utility
38Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1993 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Apr 21, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An emergency downhole disconnect tool for use in a drilling well conduit having hydraulic pressure activated and electricity activated means for disconnecting the tool from the drilling assembly by disconnecting telescoping first and second releasably connected parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.