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Earthquake data combination method, apparatus and system

A seismic data and combination method technology, applied in seismic signal processing and other directions, can solve the problems of inability to meet the compression of wide azimuth seismic data, poor stacking effect, and large difference in data characteristics, so as to reduce the impact of original data and improve stacking. effect, the effect of improving the signal-to-noise ratio

Active Publication Date: 2014-11-26
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0005] The offset compression method mentioned above can compress the narrow azimuth data to a certain extent while retaining the spatial distribution of the original data and effective information. However, when processing wide azimuth seismic data, due to the Larger, the space distance of the superimposed data has a large difference, and correspondingly, the data characteristics of the data participating in the superposition will also have a large difference. At this time, using the offset compression method will cause serious distortion of the compressed data, and the superposition effect will be poor.
Therefore, the conventional offset compression method cannot meet the compression requirements of wide-azimuth seismic data.

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[0059] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0060] After obtaining the seismic data collected in the field, it is usually necessary to preprocess the collected seismic data in order to meet the requirements of computer self-processing. The preprocessing may generally include removing bad shots and bad tracks, data decoding and rearranging, channel extraction, amplitude control, and...

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Abstract

The invention provides an earthquake data combination method, apparatus and system. The method comprises: correcting seismic channels of earthquake data to the same starting time; carrying out offset distance grouping and azimuth grouping on the earthquake data after correction; and performing superposition on the seismic channels in each group after the offset distance grouping and azimuth grouping are performed, and finishing combination of the earthquake data. By using each embodiment of the invention, at the time when the earthquake data is compressed, the influence on original data is reduced, and the spatial distribution characteristic and the effective information of the original data are well maintained. According to the invention, at the time when the earthquake data with wide azimuth angles is compressed, the signal-to-noise ratio of the earthquake data after compression can also be improved, and convenience is provided for subsequent earthquake data processing and interpretation.

Description

technical field [0001] The invention belongs to the field of seismic data processing in seismic exploration, in particular to a seismic data combination method, device and system. Background technique [0002] In the field of seismic exploration, with the continuous development of oil and gas resource exploration technology, seismic exploration has become more and more in the direction of high density, broadband, and wide azimuth angle, and the accuracy and density of seismic data collected in the field in seismic exploration are also increasing. higher. [0003] At present, in seismic exploration, the reflected wave exploration technology is mainly used to collect seismic data in the field, and then the collected seismic data is processed and interpreted indoors. The acquisition of seismic data generally refers to arranging two-dimensional or three-dimensional survey lines in oil and gas exploration areas, using explosives or other vibroseis to stimulate seismic waves, and...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 李虹戈良玉郭惠英徐玉红黄志
Owner BC P INC CHINA NAT PETROLEUM CORP
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