Marine electric spark source multi-frequency hybrid three-dimensional excitation simulation device and method

A technology of an electric spark source and a simulation device, which is applied in the field of geophysical exploration, can solve the problem of no source side ghost reflection suppression, etc., and achieve the effects of saving exploration cost, shortening construction time, and shortening excitation interval.

Inactive Publication Date: 2018-06-01
OCEAN UNIV OF CHINA
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Problems solved by technology

At present, the techniques for suppressing ghost reflections at the acquisition end mainly include upper and lower cable acquisition technology, inclined cable acquisition technology, etc. These tec

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  • Marine electric spark source multi-frequency hybrid three-dimensional excitation simulation device and method
  • Marine electric spark source multi-frequency hybrid three-dimensional excitation simulation device and method
  • Marine electric spark source multi-frequency hybrid three-dimensional excitation simulation device and method

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Embodiment Construction

[0024] The implementation of the present invention will be described in detail below with examples, so as to fully understand and implement the implementation process of how the present invention uses technical means to solve technical problems and achieve technical effects.

[0025] The invention discloses a multi-frequency hybrid three-dimensional excitation simulation device for marine electric spark sources, such as figure 1 As shown, it includes a PC control host 1, and the PC control host 1 is respectively connected with an energy low-frequency electric spark source box 2, an energy high-frequency electric spark source box 3 and a differential GPS8 through a coaxial cable, and the energy low-frequency electric spark source box 2. The first waterfowl 7 and the first electrode 4 are sequentially connected through a DC cable; the energy high-frequency electric spark source box 3 is connected with the second waterfowl 9 and the second electrode 5 in sequence through a DC cabl...

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Abstract

The invention discloses a marine electric spark source multi-frequency hybrid three-dimensional excitation simulation device and method. The device comprises a PC control host, and the PC control hostis respectively connected with an energy low-frequency electric spark seismic source box, an energy high-frequency electric spark seismic source box and a differential GPS through coaxial cables, theenergy low-frequency electric spark seismic source box is sequentially connected with a first compass bird and a first electrode through a direct-current cable; the energy high-frequency electric spark seismic source box is sequentially connected with a second compass bird and a second electrode through a direct-current cable; and the first compass bird and the second compass bird are connected with the compass bird control host through communication cables. The electric spark seismic sources with the two frequency characteristics are excited to obtain seismic signals with rich frequency components, and high-resolution seismic exploration of the seabed and the shallow, middle and deep positions below the seabed is realized.

Description

technical field [0001] The invention belongs to the technical field of geophysical exploration, and in particular relates to a multi-frequency mixed three-dimensional excitation simulation device and method for a marine electric spark source. Background technique [0002] The source excitation signal design of marine seismic exploration is one of the key steps in marine seismic exploration. The excitation energy and frequency of the seismic source directly determine the depth and resolution of the target object that can be detected in seismic exploration: the source energy of the high-energy EDM can be as high as 30,000 joules, and the excitation signal is rich in low frequency, which is mostly used for the detection of middle and deep target layers; the source energy of the small-energy EDM It can be as low as tens of joules, and the excitation signal is rich in high frequency, which is mostly used for shallow target layer detection. At present, domestic and foreign EDM so...

Claims

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Application Information

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IPC IPC(8): G01V1/157
CPCG01V1/157G01V2210/12
Inventor 李林伟童思友王忠成
Owner OCEAN UNIV OF CHINA
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