Seismic data orderliness evaluation method and device

Abstract

The invention discloses a seismic data orderliness assessment method and device. The method comprises the following steps: acquiring a three-dimensional seismic data volume to be assessed; performing point-by-point scanning on the three-dimensional seismic data according to the depth direction, the main survey line direction and the connection survey line direction, and calculating the image entropy of each sampling point to obtain an entropy data volume of the three-dimensional seismic data volume; and according to the entropy data volume, performing order evaluation on the three-dimensional seismic data volume. According to the method, the reliability of the seismic data generating the fracture attribute is evaluated based on the seismic image entropy, and then the seismic data is optimized by using the evaluation result, so that the purposes of adjusting the fracture attribute and balancing the fracture attribute are achieved, and the response form of the fracture attribute is optimized.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a method and device for evaluating the orderliness of seismic data. Background technique [0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Faults are not only channels for oil and gas migration, but also an important factor in controlling circles and reservoirs. Fault identification has great application value. Seismic data fracture identification is an important part of fault identification, and it is of great significance to effectively understand the macroscopic distribution of underground faults. As a means of fault identification, seismic attribute analysis methods have many types, and the most widely used ones are: coherence algorithm, structure tensor algorithm and so on. [0004] The ...

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Problems solved by technology

[0006] An embodiment of the present invention provides a method for evaluating the orderliness of seismic data, which is used to solve the existing schemes for identifying fractures based on seismic attribute analysis. Due to the large difference in seismic data quality, the fracture attributes have poor balance and strong multi-solution technical problems. , the method includes: obtaining the 3D seismic data body to be evaluated; scanning the 3D seismic data point by point according to the depth direction, the direction of the main survey line, and the direction of the contact survey line, calculating the image entropy of each sampling point, and obtaining the 3D seismic data The entropy value data volume of the volume; according to the entropy value data volume, the orderly evaluation of the 3D seismic data volume is carried out

[0007] The embodiment of the present invention also provides a seismic data orderly evaluation device, which is used to solve the existing scheme of identifying fractures based on seismic attribute analysis. Due to the large difference in seismic data quality, the fracture attributes have poor balance and multiple solutions. Problem, the device includes: a 3D seismic data acquisition module, used to obtain the 3D seismic data volume to be evaluated; an image entropy determination module, used to perform step-by-step processing on the 3D seismic data according to the depth direction, the direction of the main survey line, and the direction of the contact survey line. Point scanning, calculate the image entropy of each sampling point, and obtain the entropy value data volume of the 3D seismic data volume; the seismic order evaluation module is used to evaluate the order of the 3D seismic data volume according to the entropy value data volume

[0008] In the embodiment of the present invention, a computer device is also provided to solve the existing solutions for identifying fractures based on seismic attribute analysis. Due to the large difference in the quality of seismic data, the technical problems of fracture attributes are poor balance and multi-solution, including memory, A processor and a computer program stored on the memory and operable on the processor, when the processor executes the computer program, the above method for evaluating the sequence of seismic data is realized

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