A Surface Consistent Amplitude Compensation Method and Device for Converted Wave Seismic Data
A seismic data and amplitude compensation technology, applied in seismic signal processing and other directions, can solve the problems of inaccurate detection effect and unfavorable relative amplitude relationship.
Active Publication Date: 2017-01-04
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
[0006] The main purpose of the embodiments of the present invention is to provide a surface consistent amplitude compensation method and device for converted wave seismic data, to solve the problem that the existing technology is not conducive to maintaining two levels because energy statistics are only performed on one level component. The relative amplitude relationship of the components, which leads to the problem of inaccurate detection results
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] The invention provides a surface consistent amplitude compensation method for converted wave seismic data, such as figure 1 As shown, the method includes the following steps:
[0031] Step S11, acquiring converted wave seismic data, which includes: converted wave seismic data (field seismic data including X component, Y component, and Z component), observation system definition files, and acquisition shift reports.
[0032] Step S12, preprocessing the ...
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The invention provides an earth surface consistency vibration amplitude compensation method and device for converted wave seismic information. The earth surface consistency vibration amplitude compensation method and device are applied to the technical field of seismic information processing. The method includes the steps that the converted wave seismic information is collected, wherein the converted wave seismic information comprises converted wave seismic data, observation system definition files and a collection class report; the converted wave seismic information is preprocessed; converted wave pre-stacked seismic records are extracted from the preprocessed converted wave seismic information, wherein the converted wave pre-stacked seismic records comprise two horizontal components which are mutually orthogonal; vibration amplitude statistics is conducted on the two horizontal components included in the converted wave pre-stacked seismic records; earth surface consistency vibration amplitude decomposition is conducted on the vibration amplitude acquired through statistics through a Gauss-Seidel iteration method, and then vibration amplitude factors of a plurality of component items are acquired; compensation factors are calculated through the vibration amplitude factors of the component items; earth surface consistency vibration amplitude compensation is conducted on the converted wave pre-stacked seismic records through the compensation factors. Vibration amplitude statistics is conducted on the two horizontal components jointly, the method and device are more suitable for information features of converted waves, the influence of earth surface non-consistency factors on vibration amplitude can be eliminated, and follow-up processing and seismic information interpretation are convenient to conduct.
Description
technical field [0001] The invention relates to the technical field of seismic data processing, in particular to a surface consistent amplitude compensation method and device for converted wave seismic data. Background technique [0002] With the development of exploration technology, the amplitude information of seismic data becomes more and more important, and the comprehensive interpretation using the amplitude information of reflected signals has become one of the main topics studied by geophysicists. The multi-wave and multi-component seismic exploration is excited by the longitudinal wave source and received by the multi-component digital detector. It receives not only the longitudinal wave information but also the converted wave information. The converted wave can not only provide a large amount of information, but also is easy to operate and low in cost. Compared with conventional P-wave exploration, multi-wave and multi-component seismic exploration combines P-wave ...
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IPC IPC(8): G01V1/28G01V1/36
Inventor 陈海峰
Owner BC P INC CHINA NAT PETROLEUM CORP