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Three-dimensional undulating surface seismic data migration imaging method, device and system

A technology of undulating surface and seismic data, applied in seismology, measuring device, seismic signal processing, etc., can solve the problem that cannot meet the needs of true amplitude depth migration imaging or inverse scattering imaging of 3D undulating surface seismic data, and no 3D undulation is seen. surface issues

Active Publication Date: 2018-11-13
PETROCHINA CO LTD
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Problems solved by technology

However, the calculation methods of the Beylkin determinant introduced in the existing literature are all for the horizontal surface, and no calculation method for the Beylkin determinant of the 3D undulating surface has been seen so far. The conventional Beylkin determinant of the horizontal surface cannot satisfy the true amplitude depth Migration imaging or inverse scatter imaging requirements

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  • Three-dimensional undulating surface seismic data migration imaging method, device and system
  • Three-dimensional undulating surface seismic data migration imaging method, device and system
  • Three-dimensional undulating surface seismic data migration imaging method, device and system

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Embodiment Construction

[0075] 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 implementations are only some of the implementations of the present application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0076] In order to solve the problems mentioned in the background technology, in order to ensure the implementation of true amplitude depth migration imaging or inverse scattering imaging of 3D seismic data of relief surface, the embodiment of this application proposes a migration imaging method of 3D seism...

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Abstract

The present invention discloses a three-dimensional undulating surface seismic data migration imaging method, device and system. The method includes the following steps that: a three-dimensional topographic partial derivative is acquired; a central ray coordinate system from each shot point and each receiving point to each underground imaging point, ray directions from each shot point and each receiving point to each underground imaging point, and travel time from each shot point and each receiving point to each underground imaging point are acquired; amplitude and a geometric diffusion matrixfrom each shot point and each receiving point to each underground imaging point are acquired; the Beylkin determinant of a three-dimensional undulating surface is calculated according to the the three-dimensional topographic partial derivative, the central ray coordinate system from each shot point and each receiving point to each underground imaging point, the rays direction from each shot pointand each receiving point to each underground imaging point, and the geometric diffusion matrix from each shot point and each receiving point to each underground imaging point, and migration imaging is performed on the seismic data of the three-dimensional undulating surface according to a calculation result, the travel time from each shot point and each receiving point to each underground imagingpoint, and the amplitude from each shot point and each receiving point to each underground imaging point.

Description

technical field [0001] The present application relates to the technical field of seismic data processing, in particular to a three-dimensional surface relief seismic data migration imaging method, device and system. Background technique [0002] Seismic exploration is a method of using the difference in elasticity and density of underground media to infer the shape of underground structures and the properties of rock formations by observing and analyzing the response of the earth to artificially excited seismic waves. Seismic prospecting is an important means of surveying oil and natural gas resources before drilling. Seismic prospecting is also widely used in coal field and engineering geological survey, regional geological research and crustal research. Seismic exploration is superior to other geophysical exploration methods in terms of layering detail and exploration accuracy. [0003] Seismic exploration is usually divided into refracted wave seismic exploration and ref...

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Application Information

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IPC IPC(8): G01V1/36
CPCG01V1/36G01V2210/512
Inventor 徐基祥
Owner PETROCHINA CO LTD
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