Wellbore apparatus
US6920924B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2003 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Sep 7, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A unitary pipe loop component for use with a sinker bar and a pair of pipes in a wellbore includes a return bend pipe fitting having a fluid flow passage configured to extend between the pipes in the wellbore, and further includes a sleeve having a passage with open opposite ends to receive the sinker bar through the sleeve. A weight suspension structure is connected to the sleeve and the pipe fitting as another distinct portion of the unitary pipe loop component, and has a knockout portion configured to provide an eyelet for insertion of a hook, tether, or the like for suspension of a weight. The eyelet may alternatively receive an anchor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.