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Rotation measurement and correction device

A technology of measuring rotation and rotating wheel, which is applied in the field of measuring rotation correcting device, and can solve problems such as cable damage, easily entangled drill string, and cable entanglement

Pending Publication Date: 2020-11-13
旺坤(北京)科技有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] During electric drilling at the bottom of the well, under certain working conditions, due to the movement, vibration or eccentric movement of the drill string, as well as the scouring and dragging of the flowing mud, the conductive cable in the downhole annular space is close to the drill string. Move up and down, so when the conductive cable is close to the drill string, it is easy to wind the moving drill string and cause damage to the cable
[0003] At present, there is no solution in the prior art that can keep the downhole conductive cable away from the moving drill string next to it, and avoid the cable from being entangled in the moving drill string

Method used

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  • Rotation measurement and correction device
  • Rotation measurement and correction device

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Embodiment Construction

[0019] Embodiments of the invention are described in detail below, but the invention can be implemented in many different ways as defined and covered by the claims.

[0020] Please refer to Figure 1 to Figure 2 As shown, according to the embodiment of the present invention, the measuring and rotating correcting device is arranged between the inner cylinder 22 outside the drilling equipment and the wellbore casing 25. The measuring and rotating correcting device includes a mounting frame 20, and the mounting frame 20 is provided with cables 24, The rotation measuring mechanism and the rotation correction mechanism, the rotation measurement mechanism is used to measure the rotation angle of the installation frame 20 relative to the wellbore casing 25, and the rotation correction mechanism is used to correct the rotation angle of the installation frame 20 according to the rotation angle measured by the rotation measurement mechanism. The aforementioned drilling equipment refers ...

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Abstract

The invention provides a rotation measurement and correction device. The rotation measurement and correction device is arranged between an inner barrel (22) and a well shaft casing pipe (25) arrangedon the outer side of well drilling equipment and comprises a mounting rack (20). A cable (24), a rotation measurement mechanism and a rotation correction mechanism are arranged on the mounting rack (20). The rotation measurement mechanism is used for measuring the rotation angle of the mounting rack (20) relative to the well shaft casing pipe (25). The rotation correction mechanism is used for correcting the rotation angle of the mounting rack (20) according to the rotation angle measured by the rotation measurement mechanism. The rotation measurement and correction device provided by the invention can effectively prevent the cable from being twined on a moving drill column and effectively protect the cable against damage.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a measuring and rotating correction device. Background technique [0002] During electric drilling at the bottom of the well, under certain working conditions, due to the movement, vibration or eccentric movement of the drill string, as well as the scouring and dragging of the flowing mud, the conductive cable in the downhole annular space is close to the drill string. Move up and down, so when the conductive cable is close to the drill string, it is easy to wind the moving drill string and cause damage to the cable. [0003] In the prior art, there is no solution that can keep the downhole conductive cable away from the moving drill string next to it, and avoid the cable winding and moving drill string. Contents of the invention [0004] The object of the present invention is to provide a rotation measuring and correcting device, which can effectively prevent the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/024E21B17/10H02G11/00
CPCE21B17/10E21B47/024H02G11/00
Inventor 瞿国福吴洋
Owner 旺坤(北京)科技有限公司
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