A VALVE FOR A PRODUCTION TUBING, AND ALSO A PRODUCTION TUBING FOR RECOVERY OF OIL AND GAS

摘要

A valve (60) for a production tubing (12) is discussed in connection with production of oil and gas arranged for automatic shutoff of fluid flow into the production tubing (12) in case of water breakthrough, where the valve comprises at least one closable flow channel for said flowing fluid. In said at least one fluid channel (64) is provided a closing and trigger mechanism (62; 162) arranged to be maintained in a retracted position by a mechanical detent (72) made of a disintegrateable material reacting with water, whereby the valve (60) at release of the closing and trigger mechanism (62; 162) is arranged to block the flowing fluid from flowing into the production tubing (12) if said fluid contains water. A production tubing with a valve is also discussed.