Underground coal mine wire-buried rotary guide drilling tool combination and industrial control method

A technology of rotary steering and drilling tool assembly, which is applied in directional drilling, driving devices for drilling in boreholes, earthwork drilling and production, etc. It can solve problems such as low drilling efficiency and uneven drilling trajectory, and achieve improved depth and efficiency. , shorten the well construction period, and have strong formation adaptability

Active Publication Date: 2021-06-01
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the present invention provides an underground coal mine rotary steerable drilling tool assembly and an industrial control method to solve the problem of low drilling efficiency and low drilling efficiency of the directional drilling tool assembly in the prior art. Problems such as uneven trajectory

Method used

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  • Underground coal mine wire-buried rotary guide drilling tool combination and industrial control method
  • Underground coal mine wire-buried rotary guide drilling tool combination and industrial control method
  • Underground coal mine wire-buried rotary guide drilling tool combination and industrial control method

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Embodiment 1

[0048] like Figure 1 to Figure 14 As shown in the figure, this embodiment provides a rotary steerable drilling tool assembly for underground coal mines, including a buried water feeder 1, a buried drill pipe 2, a conversion joint 3, a measurement short circuit 4, and a transmission control short circuit that are coaxially connected in sequence. 5. Rotary steering drill tool 6 and drill bit 7.

[0049] The buried water feeder 1 includes a mandrel 101, and a plurality of insulated wires V102 are embedded in the side wall of the mandrel 101; the buried drill pipe 2 includes an outer pipe III201, and a plurality of insulated wires are embedded in the pipe wall of the outer pipe III201. Ⅳ202, and the insulated wire Ⅳ202 is connected to the insulated wire Ⅴ102; the adapter 3 includes an outer tube II301 and an inner tube 302 located in the outer tube II301, and a plurality of insulated wires III303 are embedded in the wall of the outer tube II301, and a plurality of insulated wires...

Embodiment 2

[0063] The present embodiment provides an industrial control method for a buried line rotary steerable drilling tool assembly in a coal mine, the method comprising:

[0064] Control signal transmission steps: the control center (that is, the orifice computer) sends a rotary steering control command, and the control command is transmitted to the conversion joint in the form of a carrier wave through the insulated wire V in the buried water feeder and the insulated wire Ⅳ in the buried drill pipe. The insulated wire III in the joint is collected into a bundle to continue to transmit commands to the measuring probe inside the short-circuit and the rotary steerable drilling tool at the front; the measuring probe can measure the current attitude value of the rotary steerable drilling tool and return to the control in the form of carrier wave In the center, the rotary steerable drilling tool can adjust the action of the hydraulic cylinder according to the control command to complete ...

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Abstract

The invention discloses an underground coal mine wire-buried rotary guide drilling tool combination and an industrial control method. The underground coal mine wire-buried rotary guide drilling tool combination comprises a wire-buried water feeder, a wire-buried drill rod, an adapter, a measurement short circuit, a launch control short circuit, a rotary guide drilling tool and a drill bit which are coaxially connected in sequence; a control center communicates with insulated wires buried in the wire-buried water feeder and the wire-buried drill rod; the insulated wires are gathered into a bundle in the adapter and then connected with a measurement probe in the measurement short circuit; the measurement probe is connected with the launch control short circuit; the launch control short circuit communicates with a control unit in the rotary guide drilling tool through the insulated wires; and the control center sends an instruction, the measurement short circuit transmits back attitude information of the drilling tool in a hole, a pushing palm on the rotary guide drilling tool pushes the well wall with different pushing forces according to the instruction, and continuous three-dimensional guiding is achieved. According to the underground coal mine wire-buried rotary guide drilling tool combination and the industrial control method, hole bottom power supply and signal transmission can be achieved, the data size and stability of signal transmission are improved, the overall strength of the drill rod is enhanced, the pressure on-way loss in long drilling construction is reduced, the stratum adaptability and directional drilling efficiency are improved, and the smoothness of the directional drilling track is ensured.

Description

technical field [0001] The invention belongs to the technical field of drilling equipment, and in particular relates to a rotary steerable drilling tool assembly and an industrial control method for underground buried lines in coal mines. Background technique [0002] Underground tunnel drilling in coal mines is one of the most direct and effective means for mine disaster prevention and coalbed methane development and utilization. MWD technology is currently the most advanced drilling construction method in coal mines. In coal mines, gas drainage, water hazard prevention and control , concealment to disaster factor exploration and many other fields are more and more widely used. The currently used MWD directional drilling tool combination mainly has the following two forms: one is the combination of the screw motor connected to the wired MWD system and the center cable drill pipe; the second is the screw motor connected to the wireless tracking system such as mud pulse or el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B47/12E21B21/00E21B4/02
CPCE21B7/04E21B47/12E21B21/00E21B4/02
Inventor 李泉新杨冬冬陈龙褚志伟陈刚
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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