Regularized tomographic velocity inversion method and device based on structural inclination angle

A technology of velocity inversion and tomographic inversion, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of not considering the geological characteristics of the regularization operator, and the application effect needs to be improved, so as to achieve easy implementation and enhanced stability , the effect of high computational efficiency

Inactive Publication Date: 2017-04-19
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0003] However, the inventor found that the above-mentioned method does not consider the geological characteristics of the regularization operator only from a mathematical point of view. Therefore, when the formation is relatively complex and the faults are relatively developed, the application effect needs to be improved

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  • Regularized tomographic velocity inversion method and device based on structural inclination angle
  • Regularized tomographic velocity inversion method and device based on structural inclination angle
  • Regularized tomographic velocity inversion method and device based on structural inclination angle

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[0018] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure 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 disclosure to those skilled in the art.

[0019] figure 1 A flow chart of a regularized tomographic velocity inversion method based on structural dips according to an embodiment of the present invention is shown, the method includes:

[0020] Step 101, obtain the inclination angle θ(y j ,z k ).

[0021] The dip angle θ(y j ,z k ), where (y j ,z k ) represents the coordinates of each point on the offset profile, y j Represents the coordinates in the y direction, j ranges fro...

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Abstract

The invention relates to a regularized tomographic velocity inversion method and device based on a structural inclination angle. The method comprises steps that an inclination angle theta (yj, zk) of each point on an offset profile is acquired; regularized operators si (ysj, zsk) respectively taking each selected point as a center are calculated according to the inclination angles; the regularized operators si (ysj, zsk) are arranged to form a regularized matrix; the regularized matrix is acted to a tomographic inversion equation before regularization to acquire a tomographic inversion equation after regularization; the tomographic inversion equation after regularization is solved, and velocity update quantity is acquired.

Description

technical field [0001] The invention relates to tomographic velocity inversion and modeling in depth domain in seismic exploration, in particular to a regularized tomographic velocity inversion method and device based on structural dip, which can be applied to seismic data processing of petroleum geophysical exploration. Background technique [0002] The tomographic velocity inversion method based on ray theory is the most widely used depth-domain velocity estimation method in the industrial field. However, the tomographic method based on ray theory has obvious disadvantages, that is, the inverse problem of tomographic inversion caused by the inhomogeneity of ray distribution is more ill-conditioned. In order to solve the above problems, many scholars have used regularization technology to significantly solve the above problems in ray tomography, and achieved certain results. The smooth operator is added to the tomographic inversion sensitivity kernel function to directly r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/28G01V1/303
Inventor 张兵张林
Owner CHINA PETROLEUM & CHEM CORP
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