Combination hydraulic tubing hanger and chemical injection sub
US5168933A · kind A · utility
29Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Oct 4, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mudline tubing hanger is disclosed in which the tubing hanger is provided as an integral part of the tubing string and is set within the casing by an hydraulic setting mechanism driven through an external control line and actuated by a wireline shifted sleeve. Further manipulation of the sleeve isolates the setting mechanism from the tubing and external control line, establishing a chemical injection conduit with access to the tubing bore through the external control line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.