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Hollow cable type directed water conveying device

A central cable and water feeder technology, applied in directional drilling, measurement, borehole/well components, etc., can solve the problem of inability to transmit the measurement signal at the bottom of the hole, and achieve the effect of safe and reliable wired measurement while drilling

Active Publication Date: 2010-06-09
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the water feeder can only provide flushing medium to the inside of the drill pipe, and cannot transmit the measurement signal at the bottom of the hole

Method used

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  • Hollow cable type directed water conveying device
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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] see figure 1 , the present invention includes a joint 2, a retaining ring 3, an outer tube 4, a shaft 5, a sheath 6, a central cable device, and the central cable device includes a wire 7, a probe 8, a probe 9, a spring 10, a set screw 11 and The variable diameter spring 12, the joint 2 and the outer pipe 4 are connected by the shaft 5, the retaining ring 3 is arranged between the outer pipe 4 and the shaft 5, and the sheath 6 is arranged at one end of the outer pipe 4 to form a directional water feeder, and the central cable device is arranged on Orientate the inner cavity of the water feeder. The probe 8 is fixed inside the probe 9 by a spring 10 and a set screw 11. The spring 10 has a certain amount of pre-compression. It will automatically compensate to ensure that the probe 8 is kept in contact with the wire 7, and the wire 7, pr...

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Abstract

The invention relates to a hollow cable type directed water conveying device. In the directional drilling of a coal mine underground tunnel and the controlled directional drilling of geology, a measuring system during drilling is a necessary tool for continuously monitoring the track of a drilling hole and timely correcting deviation. In the prior art, the water conveying device only can provide a washing medium to the inner part of a drilling rod but can not transmit a bottom hole measuring signal. The hollow cable type directed water conveying device has the following structure: the inner cavity of the existing directed water conveying device is provided with a hollow cable device which consists of a conducting wire, a probe needle, a probe head, a spring, a fixing bolt and a diameter-changing spring; the probe needle is fixed in the probe head by the spring and the fixing bolt; the probe head is provided with the diameter-changing spring; the probe needle is connected with a fast wiring column which is arranged at the other end of the directed water conveying device through the conducting wire; the diameter-changing spring is connected with the female connecting head of a hollow cable type large through hole drilling rode of an inner circular conical surface; and the fast wiring column is connected with a hole opening controller. The hollow cable type directed water conveying device can safely and reliably realize the wire measurement during drilling, and can simultaneously meet the requirements of two drilling technologies of the drilling with a bottom hole assembly drilling tool and the drilling with a bottom hole motor.

Description

technical field [0001] The invention relates to a directional water feeder with the function of measuring while drilling, in particular to a central cable type directional water feeder. technical background [0002] In coal mine underground tunnel directional drilling and geologically controlled directional drilling, the measurement-while-drilling system is an indispensable tool for continuous monitoring of drilling trajectory and timely deviation correction. In the prior art, the water feeder can only provide flushing medium to the inside of the drill pipe, and cannot transmit the measurement signal at the bottom of the hole. Contents of the invention [0003] The technical problem solved by the present invention is to provide a center-through cable-type directional water feeder capable of safely, reliably and quickly transmitting the measurement signal of the bottom of the hole. [0004] For solving above-mentioned technical problem, the technical scheme that the presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/12E21B7/04
Inventor 田东庄彭腊梅牟培英王斌桑鹏
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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