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    • 1. 发明申请
    • ROTARY STEERING DRILLING APPARATUS
    • US20220251908A1
    • 2022-08-11
    • US17416217
    • 2021-03-22
    • INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    • Qijun XIEQingyun DIQingbo LIUYongyou YANGLinfeng HONGXiangyang WANG
    • E21B17/02H01R39/64
    • Disclosed is a rotary steering drilling apparatus. The rotary steering drilling apparatus includes a plurality of cylinders that are fixedly connected in series, wherein at least a part of adjacent cylinders are in power connection via a power connection unit; the power connection unit includes a first electrical connecting assembly and a second electrical connecting assembly, the cylinder in power connection is provided with a first electrical connecting assembly at one end and a second electrical connecting assembly at the other end, the adjacent cylinders are in power connection via the first electrical connecting assembly and the second electrical connecting assembly, and the first electrical connecting assembly and the second electrical connecting assembly on the same cylinder are in power connection; the first electrical connecting assembly includes a first electrical connecting ring which is arranged annularly, and the first electrical connecting ring includes a plurality of first conducting regions and first insulating regions which are distributed circumferentially and are spaced apart; and the second electrical connecting assembly includes a second electrical connecting ring which is arranged annularly, and the second electrical connecting ring includes a plurality of second conducting regions and second insulating regions which are spaced apart. The rotary steering drilling apparatus according to the present application can achieve multi-path power connection between adjacent cylinders and has the advantages of being convenient to mount, high in conductivity reliability and the like.
    • 4. 发明申请
    • PUSH TYPE ROTARY GUIDE DRILLING SYSTEM
    • US20210396078A1
    • 2021-12-23
    • US17263804
    • 2020-07-01
    • INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    • Qingbo LIUQingyun DIXiangyang WANGYongyou YANGQijun XIEXinzhen HE
    • E21B7/06
    • The present application discloses a push type rotary guide drilling system. The push type rotary guide drilling system includes: a drill bit and a rotating shaft, the rotating shaft including an upper rotating shaft and a lower rotating shaft; a steering portion, sleeving an outer side of the rotating shaft; a push assembly, including a plurality of push pieces spaced along a circumferential direction of the steering portion; a transmission device, including a transmission mechanism for driving the push pieces to extend out of the steering portion, the transmission mechanism including a driving electromagnetic gear arranged on the upper rotating shaft and a driven electromagnetic gear arranged on the steering portion and further including a motion conversion unit converting rotary motion of the driven electromagnetic gear into linear motion of the push pieces; and a control unit, configured to modulate a magnetic field to make the driving electromagnetic gear and the driven electromagnetic gear realize linkage through magnetic coupling and make the driving electromagnetic gear and the driven electromagnetic gear operate in an adjustable transmission ratio. According to the system in the present application, it is unnecessary for the steering portion to be provided with a circuit component, a conductive socket and the like, thereby simplifying a structure of the steering portion, effectively shortening a size of the steering portion, improving the flexibility of underground feed motion and reducing cost.