Modular power and signal coupling transmission device and rotary steering drilling tool
A signal coupling and transmission device technology, used in natural gas exploration and development, and petroleum fields, can solve the problems of complicated adjustment of the gap between the primary coil and the secondary coil, inability to meet the requirements of electrical energy, signal transmission, and relative position changes, etc., to ensure efficiency and Accuracy of signal transmission, improving transmission efficiency and reliability, and the effect of small gaps
Inactive Publication Date: 2017-01-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
In actual work, due to the relative rotation between the drive shaft and the outer casing, the relative position between the primary coil and the secondary coil is easy to change, so the transmission efficiency is low, and it cannot even meet the requirements of electric energy and signal transmission, which seriously affects the use effect.
In addition, in actual installation, the gap adjustment between the primary coil and the secondary coil itself is very complicated, which affects the work efficiency
Method used
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[0042] Such as Figure 6 As shown, a modular power and signal coupling transmission device includes a cylindrical primary bracket 911 with both ends open and a secondary bracket 921 , and the secondary bracket 921 is sleeved on the outside of the primary bracket 911 . The upper end of the primary support 911 is fixedly provided with a primary connection plate 916 , and the lower end of the secondary support 921 is fixedly provided with a secondary connection plate 926 .
[0043]The outer side of the primary bracket 911 is provided with an annular primary U-shaped groove that opens outward (the side away from the axis is the outer side, the same below), and the primary U-shaped groove is provided with a primary U-shaped groove with an E-shaped cross section. The soft magnet 912, and the opening of the primary soft magnet 912 faces outward. The outer side of the primary soft magnetic body 912 is covered with a primary sheath 915, and the primary sheath 915 and the E-shaped prim...
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The invention discloses a modular power and signal coupling transmission device and a rotary steering drilling tool, wherein the primary wiring panel is equipped on the upper primary support and secondary wiring panel is equipped on the secondary support bottom for the equipment, and the upper bearing and lower bearing are respectively provided at upper and lower of the primary support and secondary support. So the relative location of primary support and the parts which are provided on the primary support and secondary support which are provided on the secondary support is fixed, and could do rotary movement around the axis, thus, ensuring the relative location between primary power coil and primary signal coil and secondary power coil and secondary signal coil is fixed, and realizes the modularization of power and signal coupling transmission device. At the same time, The invention further discloses the rotary steering drilling tool which get through the applicable modular power and signal coupling drilling tool, the rotary steering drilling tool is not only easy and convenient for installation, but flexible when rotate the internal and external coupling coil, improving the transmission efficiency and reliability.
Description
technical field [0001] The invention relates to the field of petroleum and natural gas exploration and development, in particular to a modular electric energy and signal coupling transmission device and a steering-steering drilling tool using the rotary transmission device. Background technique [0002] In the rotary steerable drilling system, electric energy and signals need to be transmitted between the two relatively rotating drive shafts and the casing. At present, in order to solve this problem, electromagnetic coupling is mostly used, that is, the primary coil and the secondary coil are electromagnetically coupled to transmit power and signals in sequence. The solution in the prior art is generally to first fix the primary coil and the secondary coil on the drive shaft and the outer casing respectively, or respectively fix them on the drive shaft and the outer casing through the mounting bracket, and then connect the driving shaft covered with the primary coil with the...
Claims
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IPC IPC(8): E21B7/04E21B44/00
CPCE21B7/04E21B44/00
Inventor 朱杰然邹德永于金平张佳佳朱瑛郑国宗
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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