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Seismic property combination method based on Dempster/Shafe (D-S) evidence theory

A technology of seismic attributes and evidence theory, applied in the fields of geophysical logging and oil and gas exploration

Active Publication Date: 2013-02-13
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
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Problems solved by technology

Although some of the fusion methods mentioned above have been relatively mature, there are still some defects in some applications, such as the weighted fusion described above.

Method used

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  • Seismic property combination method based on Dempster/Shafe (D-S) evidence theory
  • Seismic property combination method based on Dempster/Shafe (D-S) evidence theory
  • Seismic property combination method based on Dempster/Shafe (D-S) evidence theory

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Embodiment Construction

[0045] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Exemplary embodiments of the present invention may, however, be embodied in many different forms and should not be limited to the examples set forth herein. Rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0046] figure 1 It is a schematic diagram of the application principle of the seismic attribute fusion method based on the D-S evidence theory according to an exemplary embodiment of the present invention, figure 2 It is a schematic flowchart of a seismic attribute fusion method based on D-S evidence theory according to an exemplary embodiment of the present invention.

[0047] refer to figure 1 and figure 2 , according to an exemplary embodiment of the present invention, firstly, the seismic attributes to be fu...

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Abstract

The invention provides a seismic property combination method based on a Dempster / Shafe (D-S) evidence theory. According to the seismic property combination method based on the D-S evidence theory, source property data undergoes feature extraction and evidences are formed to obtain basic probability values. Under instruction of the D-S evidence theory, the basic probability values are combined to obtain a combined probability value. The combined probability value is used as a weighting coefficient and furthermore, all partial small blocks of attribute data are combined with a weight number to achieve combination of multiple seismic properties. Therefore, when single seismic property information is used to explain a complicated geology problem, a problem that multiple solutions are produced by the single seismic property information is solved.

Description

technical field [0001] Exemplary embodiments of the present invention generally relate to the fields of geophysical well logging and oil and gas resource exploration, and in particular relate to a method of using D-S evidence theory to realize seismic multi-attribute fusion. Background technique [0002] In recent years, seismic attribute technology has developed rapidly and has been widely used in various fields such as stratigraphic analysis, reservoir characterization and reservoir dynamic detection, and has become the core part of reservoir geophysics. The change of any underground geological body and its properties will cause the change of seismic attributes. Therefore, the use of seismic attributes for reservoir prediction and even fluid identification still has great application prospects. Seismic attributes have also developed from the early amplitude attributes to hundreds of commonly used ones. Since a single seismic attribute is often affected by factors such as ...

Claims

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Application Information

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IPC IPC(8): G01V1/28
Inventor 周晶晶邹文张洞君洪余刚彭真明黄振星刘璞
Owner BC P INC CHINA NAT PETROLEUM CORP
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