Down hole tool with adjustable fluid viscosity

Details Down hole tool with adjustable fluid viscosity Down hole tool with adjustable fluid viscosity

E - Fixed Constructions

21

B

E21B 23/10 (2006.01) E21B 31/113 (2006.01)

Patent

CA 2638252

A down hole tool includes a tool body, a fluid cavity, a magnetorheological fluid disposed in the fluid cavity, and an electrical control unit in communication with the MR fluid. The electrical control unit is configured to adjust a viscosity of the MR fluid by varying a magnetic field.

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