Method and system for controlling a downhole flow control device
US8602111B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2006 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Feb 13, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for controlling flow in a wellbore uses a downhole flow control device positioned at a downhole location in the wellbore. The flow control device has a movable element for controlling a downhole fluid flow. In response to an applied pressure pulse, the movable element moves in finite increments from one position to another. In one embodiment, a hydraulic source generates a transmitted pressure pulse to the flow control device wherein the maximum pressure of a received pressure pulse downhole is sufficient to overcome a static friction force associated with the movable element, and wherein a minimum pressure of the received pressure pulse downhole is insufficient to overcome a dynamic friction force associated with the movable element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.