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Quantitative selection method and system for smooth floating datum in seismic data processing

A technology for seismic data and selection systems, applied in the field of petroleum geophysical exploration, to achieve the effects of scientific construction, high computing efficiency, and scientific algorithms

Active Publication Date: 2019-04-19
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the selection technology of the existing smooth floating datum, by establishing and minimizing the target functional of the smooth floating datum, the quantitative calculation method of the datum is realized, and the seismic longitudinal minimum imaging resolution λ / 4 The maximum smoothing factor and the minimum smoothing factor can be determined according to the constraints, so that the selection of the smooth floating datum has a quantitative and reliable basis, which provides a basis for subsequent velocity analysis and migration imaging processing

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  • Quantitative selection method and system for smooth floating datum in seismic data processing
  • Quantitative selection method and system for smooth floating datum in seismic data processing
  • Quantitative selection method and system for smooth floating datum in seismic data processing

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Embodiment Construction

[0040] 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.

[0041] Aiming at the problem of quantitative selection of the existing smooth floating datum, the present invention provides a quantitative calculation method of the smooth floating datum by establishing and minimizing the target functional of the smooth floating datum, and through the seismic longitudinal minimum imaging resolution λ / The limitation of 4 determines the maximum smooth factor and the minimum smooth factor, and any smooth fact...

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Abstract

The invention provides a quantitative selection method and system for a smooth floating datum in seismic data processing. The method comprises the steps that smooth floating datum target functional establishing and minimizing are carried out; a maximum smoothing factor is determined; a minimum smoothing factor is determined; and an arbitrary value between the maximum smoothing factor and the minimum smoothing factor is selected to acquire the smooth floating datum. According to the invention, a quantitative calculation formula for constructing the smooth floating datum is provided, which makesthe construction of the smooth floating datum more scientific; and in addition, the smoothing factor selection basis and the determination selection range of the smooth floating datum are provided, which makes the selection of the smooth floating datum more reasonable.

Description

technical field [0001] The invention belongs to the field of petroleum geophysical prospecting, and relates to seismic data processing of petroleum geophysical prospecting. More specifically, it relates to the selection and static correction of smooth floating datums in prestack depth migration processing of exploration seismic. Background technique [0002] As the reference surface for prestack migration imaging and velocity modeling, the selection of smooth floating datum is very important. In general, the maximum migration aperture of the observed data can be empirically selected as the radius smooth surface elevation, or experiment with different smooth radii for velocity modeling and comparative analysis of migration effects, and choose the smooth surface with the best migration effect As a smooth floating datum, but there is no quantitative basis for the selection of a smooth floating datum. [0003] This paper proposes a quantitative selection method of smooth float...

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Application Information

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IPC IPC(8): G01V1/28G01V1/36
CPCG01V1/28G01V1/362
Inventor 张兵
Owner CHINA PETROLEUM & CHEM CORP
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