DEVICE FOR CONTROLLING A FLOW OF A FLUID BY USING A MOBILE FLOW DIFFERENCE MECHANISM (OPTIONS)

摘要

1. A fluid flow control device for use in an oil producing pipe section located in a borehole passing through an underground formation and designed to pass through it a fluid stream having a density that varies over time, including! hardware enclosure; ! a prefabricated valve having a valve body with at least one inlet and at least one outlet; A movable fluid flow deflection mechanism located in a hardware enclosure that is actuated by a change in the density of the fluid and is movable to restrict the flow of fluid through at least one valve inlet when the density of the fluid changes. ! 2. The device according to claim 1, characterized in that the flow deflection mechanism has a predetermined density and has buoyancy in a fluid of a given density. ! 3. The device according to claim 1, characterized in that the flow deflection mechanism is arranged to move between the first and second positions, wherein said flow deflection mechanism is displaced toward the first position by means of a biasing element. ! 4. The device according to claim 3, characterized in that the biasing element is represented by a spring mechanism. ! 5. The device according to claim 3, characterized in that the biasing element is represented by a counterweight. ! 6. The device according to claim 5, characterized in that the counterweight has a density different from the density of the flow deflection mechanism. ! 7. The device according to claim 6, characterized in that the counterweight is operatively associated with a flow deflection mechanism. ! 8. The device according to claim 3, characterized in that the sweat deflection mechanism