Coiled tubing concentric gas lift valve assembly
US5469878A · kind A · utility
58Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Sep 3, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flexible spoolable coiled tubing gas lift valve assembly connected in a coiled tubing. The flexible valve includes a circular housing having an axial bore therethrough for allowing the passage well tools therethrough. In one embodiment, the valve element and valve seat of the gas lift valve are eccentrically positioned in the housing. In another embodiment, the valve and valve seat are concentrically positioned in the housing. The valve element is guided and supported laterally by the housing and may include flow injection ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.