Retrievable sliding sleeve flow control valve for zonal isolation control system
US6648073B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 2, 1999 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Mar 2, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for controlling fluid flow from multiple isolated producing zones in a well is provided. Components of the system are placeable in and retrievable from bottom entry side pocket mandrel sections permanently installed in a production tubing string in the well. These components include retrievable isolation valve modules. Control signals for modules are developed either downhole or at the surface and modules may be placed or retrieved through the production tubing without pulling the production tubing from the well. In high flow rate applications the sliding sleeve flow control valve of the present invention provides a variable aperture valve having a fully open cross sectional area equal to that of the production tubing, thereby achieving a minimal pressure drop across the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.