Well drilling information acoustic wave transmission relay device based on drilling string information channel

A technology of drilling information and relay devices, which is applied in earthwork drilling, wellbore/well components, measurement, etc. It can solve the problems of sound wave propagation attenuation and increase the effective transmission distance of sound wave signals, so as to speed up understanding and reduce drilling risks , Reduce the effect of ringing interference

Active Publication Date: 2012-10-17
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problem of serious attenuation of sound waves propagating in the drill string in the existing sound wave transmission mode of drilling information, so as to increase the effective transmission distance of sound wave signals

Method used

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  • Well drilling information acoustic wave transmission relay device based on drilling string information channel
  • Well drilling information acoustic wave transmission relay device based on drilling string information channel
  • Well drilling information acoustic wave transmission relay device based on drilling string information channel

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Embodiment Construction

[0033] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 A drilling information sound wave transmission relay device based on a drill string channel is shown, which consists of a transmitter connector 1, a transmitter connector seal assembly 2, a transmitter transducer assembly 3, an instrument protection tube 4, an instrument cabin 5, and a power supply 6 , Acoustic wave receiving joint sealing assembly 7, mandrel sealing assembly 8, transducer adjustment ring 9, positioning nut 10, modulation circuit 11, accelerometer positioning body 12, accelerometer 13, protective cylinder positioning pin 14 and acoustic wave receiving joint 15 compositions.

[0035] The transmitting end joint 1 and the acoustic wave receiving joint 15 are integrally connected by threads for transmitting axial load and torque; the mandrel seal assembly 8 is installed on the outer edge of t...

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Abstract

The invention relates to a drilling information transmitting device in the field of petroleum and natural gas drilling engineering, in particular to a well drilling information acoustic wave transmission relay device based on a drilling string information channel. The well drilling information acoustic wave transmission relay device comprises an acoustic wave sensor, a modulator circuit, a power source and a transmitting transducer assembly, wherein the modulator circuit receives electric signals outputted from the acoustic wave sensor; effective data are obtained after the electric signals are processed, and are transmitted to the transmitting transducer assembly; and the power source is used for supplying power for the acoustic wave sensor, the modulator circuit and the acoustic wave transmitting transducer assembly. The well drilling information acoustic wave transmission relay device can effectively work in an underground complex environment for a long time, the transmission distance of acoustic waves in a drilling string is lengthened, effective detection and directional signal transmission are ensured, and interference of a ring is decreased.

Description

technical field [0001] The invention relates to an information transmission device while drilling in the field of petroleum and natural gas drilling engineering, in particular to an acoustic wave transmission relay device for drilling information based on a drill string channel. Background technique [0002] According to the current situation of oil and natural gas drilling projects in the world and the forecast of future development, the oil drilling industry will face more complex geological conditions and harsher natural environments. Knowing the downhole drilling parameters and geological parameters in time is the key to reducing drilling risks and improving An important guarantee for drilling benefits. At present, the drilling information transmission methods that have been proposed and applied mainly include four types: cable transmission, drilling fluid transmission, electromagnetic wave transmission and acoustic wave transmission. [0003] The wired transmission met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/16
Inventor 管志川刘永旺赵国山李志刚
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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