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Sound wave signal while drilling receiving device

A technology of acoustic wave signal and receiving device, which is applied in the field of wireless measurement while drilling, can solve the problems affecting the fidelity and reliability of the signal, the failure of high frequency and weak acoustic signal to be measured, the interference of acoustic signal measurement and reception, etc. Achieve the effect of improving the efficiency of sound wave reception, improving flexibility and reliability, and improving the receiving rate

Inactive Publication Date: 2014-11-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
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AI Technical Summary

Problems solved by technology

Insufficient clamping will affect signal fidelity and reliability
[0005] (2) Since the measurement is achieved by clamping the measuring device outside the drill string through the clamping structure, some high-frequency and weak acoustic signals will be "lost" or "filtered" and cannot be measured
[0006] (3) Since the clamping structure is not part of the drill string, it is an auxiliary structure, which will cause vibration and noise, which will interfere with the measurement and reception of acoustic signals

Method used

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  • Sound wave signal while drilling receiving device

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] A while-drilling acoustic signal receiving device, the device includes an acoustic signal receiving equipment cylinder 1 and a lower joint 2, and an external protective sleeve 3 is sheathed on the exterior of the acoustic wave signal receiving equipment cylinder 1. The lower part of the lower joint 2 is set as a hollow structure, and the upper part is set as a horn structure 4. The sound wave signal receiving equipment cylinder 1 is connected to the upper end of the horn structure 4, and the outer protective sleeve 3 is connected to the lower end of the horn structure 4. Root connection. A slot 13 is slotted on the middle outer wall of the lower joint 2, and wireless communication equipment is placed in the slot 13, and a non-metallic cover 14 is provided on the slot 13. The lower part of the lower joint 2 is provided with an external thread 16, and the lower joint ...

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Abstract

The invention relates to a sound wave signal while drilling receiving device. The device comprises a sound wave signal receiving equipment cylinder and a lower connector, wherein an outer protective protection sleeve is sleeved outside the sound wave signal receiving equipment cylinder; the sound wave signal receiving equipment cylinder is of a hollow structure with a cavity inside and an equipment bracket for holding signal receiving and processing equipment is arranged in the cavity; and the lower part of the lower connector is of a hollow structure, the lower part of the lower connector is of an amplitude transformer structure, the sound wave signal receiving equipment cylinder is connected with the upper end part of the amplitude transformer structure, and the outer protective protection sleeve is connected with the root part of the lower end of the amplitude transformer structure. Generally, the sound wave signal while drilling receiving device is a drilling tool short section; and in use, the device is connected in a drill stem and is a part of the drill stem, so underground sound waves coming along the drill stem can be absorbed completely without signal loss or mixing with extra external interference signals.

Description

technical field [0001] The invention relates to the technical field of wireless measurement-while-drilling in oil and natural gas drilling operations, in particular to a sound wave receiving and forwarding device for performing measurement-while-drilling using sound waves. Background technique [0002] With the continuous development of oil and gas drilling technology, people are eager to grasp the actual working conditions and related information downhole at any time. Measurement-while-drilling technology emerged to meet this need. The measurement-while-drilling technology can be roughly divided into: wired while-drilling technology and wireless while-drilling technology. Due to the technical limitation that the wired while drilling technology must carry cables, the wireless while drilling technology is more favored. The current wireless measurement-while-drilling technologies mainly include three major technologies: mud pulse, electromagnetic wave and sound wave. Acoust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/16
Inventor 李志刚管志川葛世瞳
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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