Well screen two step coupled connector structure
US6749020B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Jan 24, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0423
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The well screen two step coupled connector and method includes providing a well screen with a then walled tubular pin having a constant diameter channel and three pin sections of successively increasing diameter. The end of the pin has an annular surface and an angled recess is provided between the intermediate and innermost pin sections, while non-inclined external threads are formed on the end and intermediate pin sections. A tubular open ended coupling is provided having a passage divided into two coupling sections by an inwardly projecting divider. Each coupling section is configured to receive the end and intermediate pin sections and includes non-inclined threads to mate with the pin section threads. The coupling includes an angled wall adjacent the divider to provide a seal with the annular angled surface at the end of the pin and an angled projection which fits within and forms a seal with the angled recess in the pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.