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A coal mine buried rotary steerable drilling tool assembly 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, and earthwork drilling and production. 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 reduce the workload

Active Publication Date: 2022-05-10
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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  • A coal mine buried rotary steerable drilling tool assembly and industrial control method
  • A coal mine buried rotary steerable drilling tool assembly and industrial control method
  • A coal mine buried rotary steerable drilling tool assembly and industrial control method

Examples

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Effect test

Embodiment 1

[0048] Such as Figure 1 to Figure 14 As shown, this embodiment provides an underground coal mine buried rotary steerable drilling tool assembly, including a buried water feeder 1, a buried drill pipe 2, a conversion joint 3, a measurement short 4, and a control short connected sequentially coaxially. 5. Rotate the steerable drilling tool 6 and the drill bit 7.

[0049] Among them, 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 tube III 201, and a plurality of insulated wires are embedded in the wall of the outer tube III 201 IV202, and the insulated wire IV202 is connected to the insulated wire V102; the conversion joint 3 includes the outer tube II301 and the 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 the plurality of insulated wires One end ...

Embodiment 2

[0063] This embodiment provides an industrial control method for underground coal mine rotary steerable drilling tool assembly, the method includes:

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

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Abstract

The invention discloses a rotary steerable drilling tool assembly and an industrial control method for underground buried lines in a coal mine, comprising a buried line water feeder, a buried line drill pipe, a conversion joint, a measurement short circuit, a transmission control short circuit, and a rotary steerable drilling tool that are coaxially connected in sequence. and drill bit; the control center is connected to the buried water feeder and the insulated wire buried in the buried drill pipe. The insulated wire is assembled into a bundle in the conversion joint and then connected to the measurement probe in the short circuit. The measurement probe is connected to the transmitter and control short circuit. The control short-circuit is connected to the control unit in the rotary steerable drilling tool through the insulated wire. The control center sends an instruction to measure the attitude information of the drilling tool in the short-circuit return hole, and the pusher slap on the rotary steerable drilling tool pushes against the well wall with different thrusts according to the instruction to realize continuous three-dimensional steering. The invention can realize power supply and signal transmission at the bottom of the hole, improve the data volume and stability of signal transmission, enhance the overall strength of the drill pipe, reduce the pressure loss along the way in the construction of long drilling holes, improve the stratum adaptability and the directional drilling efficiency, and ensure the Directional drilling path is smooth.

Description

technical field [0001] The invention belongs to the technical field of drilling equipment, and in particular relates to an underground coal mine rotary steerable drill assembly and an industrial control method. Background technique [0002] Underground tunnel drilling in coal mines is one of the most direct and effective methods for mine disaster prevention and development and utilization of coalbed methane. Measurement-while-drilling directional drilling technology is currently the most advanced drilling construction method for underground coal mines. , detection of concealed disaster factors and many other fields are more and more widely used. Currently, there are two main types of directional drilling tool assemblies for measurement while drilling: one is the combination of the screw motor connected to the wired measurement while drilling system and the central cable drill pipe; the other is the combination of the screw motor connected to the mud pulse or electromagnetic ...

Claims

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Application Information

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Patent Type & Authority Patents(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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