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Underground coal mine hole bottom self-power-generation wired geosteering measurement-while-drilling system and method

A geosteering and measurement-while-drilling technology, applied in surveying, directional drilling, earth-moving drilling, etc., can solve the problems of low data transmission efficiency, difficulty in meeting the power consumption requirements of multi-parameter measurement, etc. Parameter measurement of power consumption demand and the effect of improving control timeliness

Pending Publication Date: 2022-06-24
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

[0009] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a self-generating wired geo-steering measurement-while-drilling system and method at the bottom of a coal mine underground hole, so as to solve the problem that the coal mine underground measurement-while-drilling system in the prior art is difficult to meet multiple parameters. Technical issues of measuring power consumption requirements and inefficient data transmission

Method used

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  • Underground coal mine hole bottom self-power-generation wired geosteering measurement-while-drilling system and method
  • Underground coal mine hole bottom self-power-generation wired geosteering measurement-while-drilling system and method
  • Underground coal mine hole bottom self-power-generation wired geosteering measurement-while-drilling system and method

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Embodiment 1

[0071] This embodiment provides a self-generating wired geosteering-while-drilling measurement system at the bottom of a coal mine, such as figure 1 As shown, it includes a self-generating wired geosteering probe 1 at the bottom of the hole, a twin-core cabled drill pipe 2 and a wireless water-while-drilling device 3 that are connected in sequence from the head end to the tail end.

[0072] Specifically, as figure 2 and image 3 As shown, the self-generating wired geosteering probe tube 1 at the bottom of the hole includes an outer probe tube 101, and an inner probe tube 102 is coaxially sleeved in the outer probe tube 101, and the first probe tube is between the outer probe tube 101 and the inner probe tube 102 A water passage 103; a limit step is set on the outer wall of the head of the probe inner pipe 102, and a magnetic rotating turbine 104 is rotatably installed on the limit step; The fixed sleeve 105 axially limits the magnetic rotating turbine 104 .

[0073] The in...

Embodiment 2

[0091] This embodiment provides a measurement method for self-generating wire geosteering while drilling at the bottom of a coal mine.

[0092] The method specifically includes the following steps:

[0093] Step 1, system connection:

[0094] Connect the directional drill bit 7, the screw motor 8, the self-generating wired geosteering exploration pipe at the bottom of the hole 1, the twin-core cabled drill pipe 2, the wireless water-while-drilling device 3, the water delivery pipe 9 and the mud pump 6 in sequence; The rod 2 is installed on the directional drilling rig 5, and the orifice data acquisition and processing terminal 4 is installed at the operating table of the directional drilling rig 5;

[0095] In this embodiment, the directional drill bit 7 is connected with the screw motor 8 , and the screw motor 8 is connected with the female thread at the head end of the self-generating wired geosteering probe 1 . The first sealing protection female connector 115 and the fir...

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Abstract

The invention provides a coal mine underground hole bottom self-power-generation wired geosteering measurement-while-drilling system and method. The system comprises a hole bottom self-power-generation wired geosteering exploring tube, a double-core cable drill rod and a wireless while-drilling water feeder which are sequentially connected from the head end to the tail end. In the hole bottom self-power-generation wired geosteering exploring tube, a magnetic coupling rotor and a magnetic rotating turbine are coaxially and oppositely arranged in a sleeved mode, when the magnetic rotating turbine rotates, the magnetic coupling rotor is driven to rotate under the magnetic coupling effect, and the magnetic coupling rotor is connected with a driving shaft of a power generator to drive the power generator to generate power. Drilling high-pressure water provided by the slurry pump is used for hole bottom self-power-generation power supply, the power supply capacity is high, the power supply voltage is stable, the multi-parameter measurement power consumption requirement is met, the hole bottom self-power-generation wired geosteering exploring tube can stably work for a long time, and frequent drill withdrawal is reduced. Compared with a traditional wired transmission mode, the signal transmission distance is doubled, and the data transmission efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of underground tunnel drilling in coal mines, relates to a measurement-while-drilling system, and in particular relates to a self-generating wire geosteering measurement-while-drilling measurement system and method at the bottom of a coal mine underground hole. Background technique [0002] Underground directional drilling is an important technical means for coal mine disaster prevention and geological exploration, which ensures the safe and efficient mining of coal mines. [0003] Measurement while drilling system is an important part of directional drilling equipment. It can accurately measure, transmit and calculate parameters such as drilling trajectory in real time. It is the basis and key to realize directional drilling. At present, mine wired MWD system, mine mud pulse wireless MWD system and mine electromagnetic wave wireless MWD system have been developed, which are widely used in various directiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B47/00E21B47/12F03B13/00
CPCE21B7/04E21B47/00E21B47/12F03B13/00F05B2220/706
Inventor 李泉新方俊刘建林郝世俊许超褚志伟王四一刘桂芹
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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