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Pre-stack time migration data processing method and device

A pre-stack time migration and data processing device technology, which is applied in the field of petroleum physical exploration, can solve problems such as long computing time and difficulty in meeting application requirements, and achieve the effects of saving running time, increasing data processing speed, and improving computing efficiency

Active Publication Date: 2018-11-16
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

With the increasing amount of seismic data collection, the conventional pre-stack time migration method takes too long to calculate when dealing with massive data, which is difficult to meet the needs of current applications.

Method used

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  • Pre-stack time migration data processing method and device
  • Pre-stack time migration data processing method and device
  • Pre-stack time migration data processing method and device

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[0061] 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.

[0062] There are two ways of offset: offset before stacking and offset after stacking. The former is called pre-stack, and the latter is called post-stack. Prestack time migration is one of the most effective methods for imaging complex structures, which can adapt to large vertical and horizontal velocity changes and is suitable for migra...

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Abstract

The present application provides a pre-stack time migration data processing method and device. The method includes: obtaining OVT-domain seismic data according to acquired wide-azimuth seismic data; performing static correction on the OVT-domain seismic data to obtain static correction processing data; performing speed analysis on the static correction processing data to obtain a root mean squarevelocity field; adding OVT information to the static correction processing data and regularizing the static correction processing data with the OVT information added so as to obtain OVT set seismic data; and performing pre-stack time migration processing according to the OVT set seismic data and the root mean square velocity field. The embodiments in the present application improve the processingefficiency of the pre-stack time migration, and save the time of pre-stack time migration data processing.

Description

technical field [0001] The present application belongs to the technical field of petroleum physical exploration, and in particular relates to a pre-stack time migration data processing method and device. Background technique [0002] One of the important purposes of seismic data processing is to improve the signal-to-noise ratio and resolution of reflected wave data after various processing of field seismic data, so as to facilitate the later interpretation of seismic data. Prestack time migration is one of the most effective methods for imaging complex structures, and it is suitable for situations with large dip angles and large changes in horizontal and vertical velocities. With the increasing complexity of seismic exploration targets, the precision requirements for seismic imaging are also getting higher and higher, making pre-stack time migration an important part of conventional seismic data processing. [0003] In the prior art, the Kirchhoff integral migration method...

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Application Information

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IPC IPC(8): G01V1/36
CPCG01V1/362
Inventor 吴晓丰戴南浔王东武威李文卉章晓
Owner BC P INC CHINA NAT PETROLEUM CORP
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