A Morphological Reconstruction Method of Deep Sea Near-bottom Towed Multi-Channel Seismic Receiver Array

A receiving array and towed technology, which is applied in the field of shape reconstruction of the deep-sea near-bottom towed multi-channel seismic receiving array, to avoid error accumulation, improve inversion accuracy and reliability, and achieve good stability

Active Publication Date: 2022-06-24
THE FIRST INST OF OCEANOGRAPHY SOA
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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, this application provides a deep-sea near-bottom towed multi-channel seismic receiving array shape reconstruction method, which can solve the problem of multi-channel seismic detection of the near-bottom towed high-resolution multi-channel seismic detection system in deep water working environment. Reconstruction of the geometry of the receiving array to improve the inversion accuracy of the position information of deep-tow seismic sources and receivers

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  • A Morphological Reconstruction Method of Deep Sea Near-bottom Towed Multi-Channel Seismic Receiver Array
  • A Morphological Reconstruction Method of Deep Sea Near-bottom Towed Multi-Channel Seismic Receiver Array
  • A Morphological Reconstruction Method of Deep Sea Near-bottom Towed Multi-Channel Seismic Receiver Array

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[0039] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0040] Please refer to figure 1 , figure 1 The implementation flowchart of a deep-sea near-bottom towed multi-channel seismic receiving array shape reconstruction method provided by the present application. like figure 1 As shown, the method includes the following steps:

[0041] Step S1: Obtaining the measured value of the deep towing source sinking depth S Z and deep tow source height measurements H ST ; Obtain the slope angle of the submarine terrain corresponding to the position of the excitation point of each shot set ; Obtain the actual observed values ​...

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Abstract

This application relates to a method for reconstructing the shape of a deep-sea near-bottom towed multi-channel seismic receiving array, which belongs to the technical field of marine geophysical exploration. The actual observation values ​​of the direct wave and seabed reflection wave travel time, the seabed terrain slope angle and seawater sound velocity corresponding to the location of the excitation point of each shot set; Characterize the displacement and vertical offset; obtain the theoretical calculation expressions of the travel time of the direct wave and the seabed reflection wave received by each shot collection point; construct the geometry model parameter inversion of the deep-sea near-bottom towed multi-channel seismic receiving array. The objective function of the derivation; reconstruct the relative position relationship between the deep-tow seismic source and the receiver point. The application can improve the inversion accuracy of deep-tow seismic source and receiver point positions, and improve the quality of deep-tow multi-channel seismic imaging sections.

Description

technical field [0001] The application belongs to the technical field of marine geophysical exploration, and in particular relates to a method for reconstructing the shape of a deep-sea near-bottom towed multi-channel seismic receiving array, which is applied to the geometry of a multi-channel seismic receiving array of a deep-sea near-bottom towed high-resolution multi-channel seismic detection system. Morphological inversion can be used to obtain accurate relative positional relationship between deep tow sources and receivers, so as to improve the quality of deep-sea near-bottom tow-type multi-channel seismic imaging profiles. Background technique [0002] Marine high-resolution multi-channel seismic exploration is an effective means to obtain quantitative characterization of the structural characteristics and physical properties of shallow seabed sediments. At present, the exploration and development of deep-sea resources (such as natural gas hydrates, polymetallic nodule...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/38G01V1/28
CPCG01V1/38G01V1/282
Inventor 刘凯李婧裴彦良刘洋廷张林清
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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