Seismic prediction method for oil-rich interval

Abstract

The invention provides an earthquake prediction method for petroleum-rich layer sections. The method comprises the steps that sensitive attributes with good recognition capability to the petroleum-rich layer sections are acquired through single well and connected well attribute analysis; the sensitive attributes are subjected to attribute fusion, and a fusion attribute capable of better reflecting a petroleum layer is acquired; the fusion attribute under different time windows of a layered section is compared with the thickness of the petroleum layer of each well, and the distinguishable formation thickness of each layer section is acquired; forward modeling is carried out on petroleum layer parameters of each layer section, and the threshold value of the petroleum layer parameters of each layer section is acquired; the distinguishable formation thickness of each layer section and the threshold value of the petroleum layer parameters of each layer section are combined, and all the petroleum-rich layer sections are determined; the fusion attribute and the petroleum layer parameters of each layer section are joined, and a detecting attribute response relationship gauge of petroleum layer sets of each layer section is acquired; the relationship gauges are utilized for detecting all the layer sections, and distribution of the petroleum-rich layer sections on the profile and plane is acquired.

Description

technical field [0001] The invention relates to the field of petroleum exploration and is applied to oil layer prediction, in particular to a method for seismic prediction of oil-rich intervals. Background technique [0002] With the development of people's economic construction activities and the increasing demand for energy in social life, it is particularly important to accurately describe and predict oil-rich intervals. With the gradual development and improvement of hydrocarbon detection technology, it is playing an increasingly important role in the process of oil and gas exploration, especially when it is applied to the detection of oil-rich intervals, its impact is more prominent, and it is important for reducing exploration risks and improving exploration success. rate plays an important role. [0003] Among the existing hydrocarbon detection methods, there are mainly post-stack seismic attribute method, proni absorption method, frequency attenuation analysis metho...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects and deficiencies of the existing technology and solve the problems of low identification ability and poor detection accuracy of oil-rich intervals in the prior art, the present invention proposes a seismic prediction method for oil-rich intervals, which can obtain oil-rich intervals The distribution on the profile and the plane is a semi-quantitative seismic prediction method that can effectively detect oil-rich intervals

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