Subsea pipe stub pulling devices and methods
US8657530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2012 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Jul 4, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/002
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for retrieving a subsea tubular comprises a housing. In addition, the device comprises a receiving body slidingly disposed within the housing. The body has a central axis, a lower end, and a receptacle extending from the lower end. Further, the device comprises an actuation member configured to move the housing axially relative to the body. Still further, the device comprises a plurality of cam members. Each cam member is rotatably coupled to the lower end of the body and has a cam head extending radially into the receptacle and a lever arm extending from the cam head. Each cam member is configured to rotate in a first direction to move the cam head radially inward and rotate in a second direction to move the cam head radially outward. Moreover, the device comprises a plurality of biasing members configured to bias the cam members in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.