2021
DOI: 10.1155/2021/6688656
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Drag‐Reduction Performance Evaluation of Controllable Hybrid Steering Drilling System

Abstract: The excessive drag/torque and the backing pressure is an important factor that restricts the improvement of the penetration rate and the extension of the drilling in the sliding drilling process of extended-reach wells and horizontal wells. To deal with this problem, this paper developed a novel controllable hybrid steering drilling system (CHSDS) based on the friction-reducing principle of a rotating drill string. The CHSDS is composed of a gear clutch, hydraulic system, and measurement and control system. By… Show more

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Cited by 5 publications
(3 citation statements)
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“…The large-diameter insulation pad (7), slightly larger than the insulation pads (6), helps stabilize the overall structure, preventing instability in the center of gravity and further isolates heat between the insulation pads ( 6) and the rotating mechanism. The rotating mechanism involves the rotating platform (8), bearings (9), fixed platform (10), and motor (11). During the sintering process of the drill bit, this mechanism ensures smooth and slow rotation, promoting more uniform sintering and improving drill bit quality.…”
Section: Structural Designmentioning
confidence: 99%
See 2 more Smart Citations
“…The large-diameter insulation pad (7), slightly larger than the insulation pads (6), helps stabilize the overall structure, preventing instability in the center of gravity and further isolates heat between the insulation pads ( 6) and the rotating mechanism. The rotating mechanism involves the rotating platform (8), bearings (9), fixed platform (10), and motor (11). During the sintering process of the drill bit, this mechanism ensures smooth and slow rotation, promoting more uniform sintering and improving drill bit quality.…”
Section: Structural Designmentioning
confidence: 99%
“…This rotation ensures that the magnetic induction lines pass through every part of the mold, resulting in a more even heating of the drill bit during sintering. Figure 9 illustrates the rotary sintering mechanism designed in this study, comprising rotating platforms (8), bearings (9), fixed platforms (10), and motors (11). The motor is selected as a PFDE68KYYZ synchronous motor, and the corresponding parameters of rotational speed and torque are as follows in Table 2.…”
Section: Temperature Distribution Uniformity Comparison Experimentsmentioning
confidence: 99%
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