Hydraulic set tubing hanger
US4067062A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Jun 11, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/0418
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tubing hanger for suspending multiple strings of tubing in a subsea wellhead or casing hanger upon being lowered from the drill vessel into a properly oriented seating position in the casing hanger. The tubing hanger is releasably secured to the casing hanger by hydraulic manipulation of the running tool after the tubing hanger has been oriented in the casing hanger. Thereafter, by further hydraulic manipulation, the running tool is released from the hydraulic set tubing hanger for retrieval to the drill ship. The running tool may later be returned and connected to the tubing hanger and, by further manipulation of the running tool, the hanger is disconnected from the casing hanger and elevated to the drill ship.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.