Single trip tubing hanger assembly
US4373584A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1979 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | May 7, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus is provided for producing a well from at least one productive zone penetrated by the well bore in which casing is set below the top of the well. Tubing hanger means support at least one production tubing string extending downwardly in the well bore and communicating with a production zone. Anchor means on the tubing hanger means are actuatable into anchoring engagement with the casing. The tubing hanger means receives at least one upper production tubing string section typically carrying safety valve means thereon extending to the top of the well and sealingly engageable with the tubing hanger means before, during and after the anchoring engagement of the tubing hanger means with the casing, whereby the upper production tubing string section is respectively communicable with the downwardly extending production tubing string when the tubing hanger is set. A latch apparatus is carried on and extending between the upper production tubing string sections for initial securement of the tubing hanger means to each of the upper production tubing string sections, the latch apparatus carrying the sum of the strength of the tubing hanger means and each of the lower production tub…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.