Special underground direct-driven discharging and extracting equipment for coal bed gas
A coalbed methane, direct drive technology, applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve problems such as large drainage, wear and well inclination, difficulties, etc.
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[0020] See figure 1 , image 3 , The present invention cooperates with the ground control system 11 and the special wellhead 9 to complete the coalbed methane drainage operation, which includes the casing 2, the motor 1, the motor protector 3, the centralizing bearing assembly 4, the screw pump 5, the special connector 6, the special The axial load bearing mechanism 7 and the oil pipe 8, the motor 1 is arranged at the bottom of the wellbore, the motor 1 is connected to the ground control system 11 through a cable 10, and the motor output shaft passes through the motor protector 3, the centralizing bearing assembly 4 and the rotor of the screw pump 5 5-1 is connected to the input end, and the output end of the rotor 5-1 is connected to a dedicated axial load-bearing mechanism 7. The dedicated connector 6 is composed of an inner shaft 6-1 and a housing 6-2. The stator 5-2 is connected to a dedicated axial force bearing mechanism 7, the oil pipe 8 is connected between the dedica...
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