Down-hole tool and controllable segment sealing device for down-hole working barrel seal
A technology of sealing device and work cylinder, which is applied in the field of pressure sealing, can solve the problems of unable to monitor pressure and large external dimensions, achieve high application value and avoid damage
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[0018] like figure 1 , figure 2 As shown, this embodiment of the present invention uses a pressure gauge as a downhole tool, wherein the formation pressure gauge 13, the pressure sensing tube 11 and the mandrel 17 are introduced to facilitate the description of the working principle of the controllable section sealing device of the present invention. The controllable segment sealing device of the present invention includes a cylindrical outer casing formed by the outer cylinder 14 of the load cell, and also includes a motor 1, a coupling 2, an output shaft 3, a transmission shaft 4, a right-handed transmission nut 5, and a sliding sleeve 6. , 16, cups 7, 9, drive screw 8, left-hand drive nut 10, pressure sensing tube 11 and drive screw 12.
[0019] A motor 1 is arranged at the lower end of the outer cylinder 14 of the pressure gauge, and a formation pressure gauge 13 and a pressure sensing tube 11 are arranged at the upper end. The pressure sensing tube 11 is provided with a...
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