Fracture and reservoir superior azimuth data volume adaptive determination method and device

Abstract

The embodiment of the invention provides a fracture and reservoir superior azimuth data volume adaptive determination method and device. The method comprises the steps that the seismic data of the target area are acquired; an azimuth relative time difference set and an azimuth amplitude set are determined according to the seismic data of the target area; and the fracture and reservoir superior azimuth data volume is determined according to the azimuth relative time difference set, the azimuth amplitude set and the seismic data. According to the scheme, the anisotropic information included in the seismic data and the fluctuation characteristic of the seismic wave propagating in the fracture position are considered, the azimuth relative time difference set and the azimuth amplitude set are firstly determined and then the fracture and reservoir superior azimuth data volume is determined by using the azimuth relative time difference set and the azimuth amplitude set so that the technical problems of high error and poor accuracy of the extracted azimuth data volume and the interference geological information existing in the present method can be solved, and the technical effect of extracting the multi-azimuth fracture and reservoir superior azimuth data volume of great representation effect in a targeted way can be achieved.

Description

technical field [0001] The present application relates to the technical field of geophysical exploration, in particular to a method and device for adaptive determination of fracture and reservoir dominant orientation data volumes. Background technique [0002] In the process of geophysical exploration, it is often necessary to extract azimuth data volumes related to geological targets from a large amount of seismic data, so that the relevant characteristics of geological targets can be better determined according to the extracted azimuth data volumes. For example, fracture imaging is usually relatively sensitive to the direction of propagation of seismic waves. Therefore, it is often necessary to extract azimuth data volumes related to fractures from seismic data in order to better study the distribution of fractures in the region. It should be noted that the fault in the formation can also be considered as a kind of fracture. [0003] At present, in order to extract the a...

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Problems solved by technology

[0005] The embodiment of the present application provides a method and device for adaptively determining fracture and reservoir dominant azimuth data volumes to solve the problems existing in the existing methods that the extracted azimuth data volumes have large errors and poor precision and cannot avoid interfering with geological information problem, to achieve the technical effect of being able to specifically extract multi-directional fractures and reservoir dominant orientation data volumes with better characterization effects

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