Multi-earthquake-source multi-towline trigger timing control system and method

A time-series control and multi-source technology, applied in water resources assessment, seismology in water-covered areas, climate sustainability, etc., can solve problems such as low efficiency of exploration targets and underutilization of exploration resources , to achieve the effect of reducing the burden on the collection and recording system, reducing the recording time, and reducing the workload of post-processing

Active Publication Date: 2014-09-17
THE FIRST INST OF OCEANOGRAPHY SOA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional marine engineering seismic exploration can only use a certain source and a certain streamer for detection in one detection process, and can only obtain a set of seismic sections with a penetration depth and corresponding resolution, and the exploration resources are not fully utilized. target less efficient

Method used

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  • Multi-earthquake-source multi-towline trigger timing control system and method
  • Multi-earthquake-source multi-towline trigger timing control system and method
  • Multi-earthquake-source multi-towline trigger timing control system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Embodiment 1, marine seismic exploration with dual-source and dual-cable acquisition:

[0064] Such as figure 2 As shown, it is a working schematic diagram of the dual-source dual-cable marine seismic exploration method of the present invention. The figure shows that a low-frequency hydrophone streamer and a high-frequency hydrophone streamer are used, and two different acquisition frequencies and recording times are used to receive seismic signals from two seismic sources reflecting shallow strata 401 and middle strata 402 respectively. The seismic sources are the low-frequency seismic source 201 and the high-frequency seismic source 203 respectively, and two sets of seismic sections with different detection depths and resolution capabilities are obtained at the same time.

[0065] Such as image 3 As shown, the connection block diagram of the specific components of the dual-source and dual-cable marine seismic exploration. The dual-cable seismic data acquisition s...

Embodiment 2

[0075] Embodiment 2, dual-source three-cable acquisition marine seismic exploration:

[0076] Such as Figure 5 As shown, it is a schematic diagram of the double-source three-cable marine seismic exploration work of the present invention. The figure shows the use of a low-frequency hydrophone streamer cable, a medium-frequency hydrophone streamer cable and a high-frequency hydrophone streamer cable, and three different acquisition frequencies and recording times to receive reflections from two seismic sources in shallow formations 401 1, the seismic signals of the middle formation 402 and the deep formation 403, the two seismic sources are respectively divided into low-frequency seismic sources and high-frequency seismic sources, and three sets of seismic sections with different detection depths and resolutions are obtained at the same time.

[0077] Such as Figure 6 As shown, it is a connection block diagram of specific components of the dual-source three-cable marine seis...

Embodiment 3

[0087] Embodiment 3, three-source three-cable acquisition marine seismic exploration.

[0088] Such as Figure 8 As shown, it is a schematic diagram of the marine seismic exploration work of the present invention with three seismic sources and three cables. The figure shows the use of a low-frequency hydrophone streamer cable, a medium-frequency hydrophone streamer cable and a high-frequency hydrophone streamer cable, and three different acquisition frequencies and recording times to receive reflections from three seismic sources in shallow strata 401 1, the seismic signals of the middle stratum 402 and the deep stratum 403, the three sources are respectively divided into low frequency sources, intermediate frequency sources and high frequency sources, and three sets of seismic sections with different detection depths and resolutions are obtained at the same time.

[0089] Such as Figure 9As shown, it is a connection block diagram of specific components of the three-source ...

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Abstract

The invention provides a multi-earthquake-source multi-towline trigger timing control system and method. The system comprises tow lines, earthquake sources and a control module. The control module comprises a central process, a double-channel earthquake collecting module, a high-precision clock module and a time service module. The earthquake sources are sequentially controlled to activate, the tow lines receive stratum data, seismic survey tasks can be finished efficiently at high quality, and multiple set of seismic section data in different detection depths and with different resolution ratios are obtained simultaneously in one seismic exploration.

Description

technical field [0001] The invention belongs to the technical field of marine engineering seismic exploration, and in particular relates to a multi-source multi-streamer trigger timing control system and method. Background technique [0002] In marine engineering seismic exploration operations, special offshore seismic sources and hydrophone streamers are usually used, and the seismic section of the seabed strata is obtained after processing the reflection signals received by the trigger source. There are many types of seismic sources in marine seismic exploration, and the characteristics of each source are different. Different types of sources are used in seismic exploration, and the penetration depth and resolution of the obtained seismic sections are different. There are also many types of receiving streamers for marine seismic exploration, and the selection of streamers also affects the penetration depth and resolution of seismic sections. Conventional marine engineerin...

Claims

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Application Information

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IPC IPC(8): G01V1/38
CPCY02A90/30
Inventor 李保华裴彦良刘晨光李西双孙蕾
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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