Control of fluid flow in oil wells

Details Control of fluid flow in oil wells Control of fluid flow in oil wells

E - Fixed Constructions

21

B

E21B 33/13 (2006.01) E21B 21/08 (2006.01) E21B 21/10 (2006.01) E21B 33/16 (2006.01)

Patent

CA 2086505

A device is provided for controlling fluid flow in oil well casings or drill pipes. The device defines a flowpath for fluid through a casing section or drill pipe with the flowpath including a throttling valve which restricts or prevents the flow of fluid therethrough. This can be used to prevent U-tubing in casings or can be used to locate leaks in drill pipes or can be used to monitor the position of successive fluids of differing viscosities in a casing string.

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