Dual tubing string hanging apparatus
US5794693A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | May 2, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/047
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for hanging a production tubing string and a guide string within a well casing having a wellhead. The apparatus includes a primary hanger shell for supporting the production tubing string and guide string in the well casing, a production mandrel received within the primary hanger shell and connected to the production tubing string to hang the production tubing string within the primary hanger shell, and a guide string hanger connected to and hanging the guide string within the primary hanger shell. The guide string hanger also allows the guide string to be removed from the well casing independently from the removal of the primary hanger shell, the production mandrel or the production tubing string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.