Horizontal sampling soil drilling rig and control method thereof

    公开(公告)号:US11851966B1

    公开(公告)日:2023-12-26

    申请号:US18132981

    申请日:2023-04-11

    CPC classification number: E21B25/16 E21B7/046

    Abstract: A horizontal sampling soil drilling rig and a control method are used to solve the problem that the soil sampling device in the prior art has difficulty in horizontal sampling. The horizontal sampling soil drilling rig includes a rack, a connection assembly, a drive mechanism, a spiral drill rod, and a sampler. The rack is provided with a spline shaft and a screw rod in parallel. The screw rod and the spline shaft are connected through a first transmission assembly in transmission connection. The drive mechanism includes a rotation driver, a second transmission assembly, and a spline shaft sleeve. The spline shaft sleeve is rotationally connected to the rack, and the spline shaft sleeve and the spline shaft mesh with each other. The rotation driver is connected with the spline shaft through the second transmission assembly in transmission connection.

    Method and Apparatus For Geothermal Energy Recovery From Wellbores

    公开(公告)号:US20230374869A1

    公开(公告)日:2023-11-23

    申请号:US18322407

    申请日:2023-05-23

    Applicant: Gunnar LLLP

    Inventor: Clinton Moss

    CPC classification number: E21B17/0285 E21B7/046

    Abstract: Methods are disclosed for magnetically ranging and connecting a wellbore unto an opposing wellbore to create a continuous closed loop flow path from surface to downhole and back to surface again. The methods incorporate advanced directional drilling techniques, complex completion equipment as well as novel magnetic ranging systems which allow for the precise wellbore placement, zonal isolation and hydraulic communication required to recover geothermal energy by way of a circulated working fluid.

    MICROTUNNELING METHOD AND DEVICE
    57.
    发明公开

    公开(公告)号:US20230374863A1

    公开(公告)日:2023-11-23

    申请号:US18135696

    申请日:2023-04-17

    Inventor: Ingo Justen

    CPC classification number: E21B7/046 E21B3/02 E21B21/01

    Abstract: A microtunneling method including placing a boring machine in a starting shaft; jacking the boring machine from the starting shaft along a tunnel towards a target shaft; while electrically rotating a cutter head at a front end of the boring machine about an axis of the tunnel; and pumping a slurry that transports cuttings from the cutter head out of the tunnel, wherein a synchronous reluctance motor rotates the cutter head. To reduce environmental burden, the invention further proposes that electric energy for the boring machine for the jacking and the pumping is buffered.

    APPARATUS FOR CAPTURING AXIAL FORCE ON AN INNER DRIVE MEMBER

    公开(公告)号:US20230332469A1

    公开(公告)日:2023-10-19

    申请号:US18341366

    申请日:2023-06-26

    Inventor: Max A. Metcalf

    CPC classification number: E21B7/002 E21B3/02 E21B7/046 F16D3/06

    Abstract: A spindle with a mechanism for transferring axial force from an inner drive assembly to an outer drive assembly. The spindle's inner drive shaft is connected to an inner member of a dual-rod pipe by a drive rod having a sliding sleeve. The sleeve is fixed rotationally with the drive shaft, but not axially. When axial force drives the drive rod toward the drive member of the spindle, the sleeve contacts a stop member which is paired to the outer drive assembly. The stop member may be a pair of dowel pins. Axial force is thereby transferred from the inner member to the outer member, allowing such forces to be absorbed by the outer member's larger drive components.

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