Side pocket mandrel having forged indentations
US4759410A · kind A · utility
7Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Sep 5, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49938
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A side pocket mandrel for use in well tubing. The mandrel has a body, having an open bore extending through the body in alignment with the well tubing, and a side pocket offset from the bore. A valve receptacle is formed in the side pocket of the mandrel. The body of the mandrel has a plurality of forged indentations. These indentations are axially spaced above the valve receptacle and extend into the side pocket for a distance sufficient to keep well tools from entering the valve receptacle. The indentations may also taper away from the valve receptacle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.