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Seismic omnidirectional vector detector

A geophone and vector technology, which is applied in the field of seismic omnidirectional vector geophones, can solve the problems of large error in seismic wave field full information detection, and achieve the effects of improving purity, improving fidelity and improving signal-to-noise ratio.

Active Publication Date: 2016-01-20
PETROCHINA CO LTD
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Problems solved by technology

[0031] The present invention provides a seismic omnidirectional vector detector to at least solve the problem of relatively large detection errors of seismic wave field full information in the prior art

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  • Seismic omnidirectional vector detector
  • Seismic omnidirectional vector detector
  • Seismic omnidirectional vector detector

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Embodiment Construction

[0072] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0073] The present invention proposes a seismic omnidirectional vector detector, which is equal and balanced in all directions in the spatial structure. This is a structural advantage that the geophones in the prior art do not have. Using this structural advantage, the full information of the seismic wave field can be realized accurate detection. The specific structure of the seismic omnidirectional vector detector is introduced below.

[0074] An...

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Abstract

The present invention discloses a seismic omnidirectional vector detector which comprises eight detectors and a support structure for supporting the eight detectors, thus the bottom surfaces of each two detectors are on one equilateral triangle surface of one regular tetrahedron, and the intersection points of the working shafts of two detectors on the same equilateral triangle surface and the equilateral triangle surface are on the angular bisector of one angle of the equilateral triangle surface and are symmetrical by the center of the equilateral triangle surface. According to the divergence and vorticity equations of the field theory, a specific space motion full vector detection structure is designed, the full information detection of the frequency of a seismic wave field, amplitude, phase, vibration direction and especially the divergence and vorticity of a wave power field is realized, and a new seismic omnidirectional vector detector structure is formed.

Description

technical field [0001] The invention relates to the technical field of geophones, in particular to a seismic omnidirectional vector geophone. Background technique [0002] According to the wave theory, waves mean not only vibrations, but also the propagation of vibrations. Specifically: 1. Vibration can be decomposed into linear vibration and rotational vibration; 2. The wave field divergence drives the longitudinal wave, and the wave field curl drives the transverse wave; 3. The linear vibration is the joint action of divergence and curl, which includes both Contains transverse waves; 4. Rotation vibration is only related to curl; 5. Body curl is complete curl, and surface curl is incomplete curl. Therefore, techniques that can only detect linear vibrations cannot cleanly separate longitudinal and transverse waves. It must be a technology that can detect body curl or divergence, so that it is possible to solve pure shear waves and pure longitudinal waves. [0003] The sp...

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Application Information

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IPC IPC(8): G01V1/18
CPCG01V1/184G01V1/20G01V1/181G01V1/28
Inventor 陈立康
Owner PETROCHINA CO LTD
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