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Underground eight-unit circumferential scanning sound-wave radiator

A radiator, sound wave technology, applied in wellbore/well components, measurement, earthwork drilling, etc., to achieve the effect of reducing complexity and reducing the number of array elements

Active Publication Date: 2013-12-04
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a downhole eight-unit circumferential scanning acoustic wave radiator to solve the problem of azimuth radiation of sound waves from downhole sound sources

Method used

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  • Underground eight-unit circumferential scanning sound-wave radiator
  • Underground eight-unit circumferential scanning sound-wave radiator
  • Underground eight-unit circumferential scanning sound-wave radiator

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] Such as figure 1 As shown, the embodiment of the present invention provides a downhole eight-unit circumferential scanning acoustic radiator. The downhole eight-unit circumferential scanning acoustic radiator includes: the radiator includes: a vibrator carrier 101 and eight piezoelectric A vibrator 102; wherein, the shape of the vibrator supporting frame is an octagonal prism, and has eight vibrator bearing surfaces 103, and each of the vibrator bearing...

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Abstract

The invention provides an underground eight-unit circumferential scanning sound-wave radiator which comprises a vibrator supporting rack and eight piezoelectric vibrators, wherein the vibrator supporting rack is an octagonal prism in shape and has eight vibrator supporting surfaces, and each vibrator supporting surface is used for supporting one piezoelectric vibrator. The eight piezoelectric vibrators correspond to the eight vibrator supporting surfaces respectively, and each piezoelectric vibrator is combined closely with the corresponding vibrator supporting surface for radiating sound waves. The invention can solve the problem of radiating sound waves in an underground sound source direction, decrease array element number of a transducer array and reduce the complexity of an excitation and control circuit.

Description

technical field [0001] The invention relates to the acoustic logging technology in geophysics and petroleum engineering, in particular to a downhole eight-unit circumferential scanning acoustic radiator. Background technique [0002] The sound sources of existing acoustic logging tools generally adopt multipole sound sources (including monopole sound sources, dipole sound sources and quadrupole sound sources), and multipole sound sources play an important role in modern acoustic logging technology. However, the radiated sound field basically does not have the circumferential distribution characteristics or only has poor circumferential distribution characteristics, which is not conducive to the acoustic measurement with azimuth resolution downhole. [0003] A controllable downhole acoustic radiator with arbitrary directivity disclosed in Chinese patent application ZL200310115236.1 is incorporated herein as the prior art of the present invention. This patent application prop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/14
Inventor 车小花乔文孝鞠晓东卢俊强
Owner BC P INC CHINA NAT PETROLEUM CORP
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