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Method and device for determining seismic property data body

A technology of seismic attributes and data volume, applied in the field of geophysical exploration, can solve problems such as inability to identify and hide fluids, and achieve the effect of improving accuracy and reservoir prediction accuracy.

Active Publication Date: 2018-07-24
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0003] In the prior art, because the pre-stack seismic data volume does not contain azimuth and other information, the frequency spectrum of the post-stack seismic data volume is often used for fluid detection and analysis, but due to special geological phenomena such as faults and overlying special lithological bodies, seismic data The influence of frequency is far greater than the influence of fluid on frequency, so the frequency anomaly caused by fluid is hidden in other geological anomalies and cannot be identified

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  • Method and device for determining seismic property data body
  • Method and device for determining seismic property data body
  • Method and device for determining seismic property data body

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Embodiment Construction

[0049] 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.

[0050] The specific implementation of the embodiment of the present application will be described in detail below with several specific examples.

[0051] An embodiment of a method for determining a seismic attribute data volume of the present application is first introduced below. figure 1It is a flow chart of an embodiment of the metho...

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Abstract

The invention provides a method and device for determining seismic property data body. The method comprises the steps that the sub-azimuth angle stacking is conducted on a regularized azimuth angle gather, obtaining a plurality of azimuth gather data, wherein the regularized gather includes offset, azimuth angle, and time; the centroid frequency of the plurality of azimuth angle gather data can berespectively calculated, obtaining a centroid frequency gather; the maximum centroid frequency and the minimum centroid frequency corresponding to the same time in the centroid frequency gather respectively form a maximum centroid frequency gather and a minimum centroid frequency gather; the maximum centroid frequency gather and the minimum centroid frequency gather respectively form the seismicproperty data body. The invention is advantageous in that the seismic property data body cannot be affected by collected footprint or superficial layer interference, and the reliability of the predicted result can be improved.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a method and a device for determining a seismic attribute data volume. Background technique [0002] In the process of geophysical exploration, the pores of the actual formation often contain fluids (oil, gas, water), and inelastic attenuation will occur when seismic waves propagate in them. Among them, the attenuation, scattering and dispersion of high-frequency components are far greater The low-frequency components retain richer information reflecting formation lithology than the high-frequency components. Therefore, it is possible to rely on seismic data spectrum analysis for fluid detection, and then realize reservoir prediction in fault-developed areas and abnormal geological body-developed areas. [0003] In the prior art, because the pre-stack seismic data volume does not contain azimuth and other information, the frequency spectrum of the post-stack seis...

Claims

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Application Information

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IPC IPC(8): G01V1/30
Inventor 李丰张延庆王霞钱丽萍李建华王小善
Owner BC P INC CHINA NAT PETROLEUM CORP
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