Small-diameter deep-hole directional drilling down-hole signal butt joint system
A directional drilling, small-diameter technology, which is applied in directional drilling, earthwork drilling, wellbore/well parts, etc., can solve the problems of being unable to apply to small-diameter deep holes, etc., and achieves wide practicability, ease of operation, and good response , Good effect of insulation and sealing performance
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 2 with image 3 As shown, in the downhole signal docking system for small-diameter deep hole directional drilling in a preferred embodiment of the present invention, the probe 11 is placed separately from the signal transmission cable 12; the probe 11 is placed in the non-magnetic drill collar 4, and the probe 11 follows the The drill collar 4 is lowered into the downhole; the docking system mainly includes the downhole signal docking device 7, which is installed on the upper end of the probe 11 and lowered into the downhole; and the ground signal docking device 8, and the upper end of the ground signal docking device 8 is connected to the signal transmission cable 12 , the lower end of the surface signal docking device 8 is docked with the upper end of the downhole signal docking device 7, so that the signal t...
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