Evaluation method for prestack seismic data regularization observation system
An observation system and pre-stack seismic technology, applied in the field of seismic exploration, can solve problems such as standards and methods without quantitative evaluation
Active Publication Date: 2019-04-19
CHINA PETROLEUM & CHEM CORP +1
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However, there is no set of quantitative evaluation standards and methods for the requirement that the physical location distribution of the new data’s artillery inspection points be as close as possible to the original observation system.
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[0071] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0072] The following reference figure 1 The evaluation method of the pre-stack seismic data regularization observation system according to the exemplary embodiment of the present invention is described in detail. The method mainly includes:
[0073] Step 1: Input the standard SPS files of the original observation system and the regularized observation system, as well as the respective azimuths and bin sizes of the two observation systems. The SPS files include shot point files, recei...
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The invention discloses an evaluation method for a prestack seismic data regularization observation system. The method includes inputting standard SPS files of an original observation system and a regularization observation system, and azimuth angles and surface element sizes of the two observation systems; establishing shot point lists, receiving point lists, checkpoint relation lists and checkpoint relation indexes of the original observation system and the regularization observation system; establishing shot point grids of the original observation system and the regularization observation system and establishing a surface element grid of the regularization observation system; mapping the shot points of the original observation system and the regularization observation system to their respective shot point grids; performing checkpoint matching search of the original observation system and the regularization observation system; calculating the checkpoint matching degree data of the original observation system and the regularization observation system and outputting the data. According to the invention, adjustment is made on the designed observation system according to results or the optimal scheme can be selected from multiple alternative schemes.
Description
technical field [0001] The invention relates to the field of seismic exploration, in particular to a method for evaluating a pre-stack seismic data regularized observation system. Background technique [0002] Seismic data pre-stack regularization technology is one of the commonly used methods in pre-stack migration processing. The pre-stack data regularization technology improves various adverse effects caused by irregular data grid coverage times, offset distance, and azimuth angle distribution to a certain extent, and makes up for the data defects of the field acquisition system. [0003] The regularization of pre-stack seismic data is to form a set of data relationships in line with the new observation system by reorganizing or interpolating the original field data according to the specified observation system. This new observation system for regularization generally needs to meet several requirements: 1. The bin size of the new observation system must meet the imaging ...
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IPC IPC(8): G01V13/00
CPCG01V13/00
Inventor 陈占国曾昭翰黄鹏李博许璐
Owner CHINA PETROLEUM & CHEM CORP