Spoolable flexible hydraulic controlled annular control valve
US5465793A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1994 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Jul 21, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/122
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to pass wireline tools for performing other operations. The spoolable coiled tubing system may use standard coiled tubing well control equipment and can be used in live wells. The flush, flexible, spoolable and through bore completion equipment may include a tubing retrievable safety valve, an annular control valve, concentric gas lift valves, a zone packer, a landing nipple, a sliding sleeve, and may include at the end a non-flexible but flush and open bore production packer and pump out plug. The completion system may be retrieved through a retrieval system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.