Valve and a method for closing fluid communication between a well and a production string, and a system comprising the valve
US11111756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2018 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Dec 14, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve, a system and a method are for closing fluid communication between a well and a production string when a content of an undesired fluid in the fluid flow exceeds a predetermined level. The valve has a primary flow channel having a primary inlet through a flow barrier, and a low pressure portion; a secondary flow channel having a secondary inlet through the flow barrier and provided with a flow restrictor; a chamber connected to the secondary flow channel; a piston for opening and closing the primary flow channel; and an inflow control element movable in response to a density of a fluid. The inflow control element is exposed to the fluid flow upstream of the flow barrier and moves to close the secondary inlet when the content of the undesired fluid exceeds the predetermined level, activating the piston and closing the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.