Method for manufacturing seismic slice with overthrust fault

Abstract

The invention provides a method for manufacturing a seismic slice with an overthrust fault, which comprises the following steps of: carrying out explanation on a geologic horizon (with an overthrust fault) and a fault; connecting the geologic horizon with the fault so as to form a new horizon according to the explanation results of the geologic horizon and the fault; carrying out up-and-down horizon connection on the obtained new horizon at the position of the fault so as to form a closed fault block; and according to the formed fault block and the connected horizon, executing an operation ofslicing.

Description

technical field [0001] The invention belongs to the field of oil and gas exploration and development, and more specifically relates to a method for making seismic slices containing overthrust faults. Background technique [0002] Seismic slice analysis technology is an important analysis technology in 3D seismic exploration, which plays a very important role in identifying the spatial distribution area of ​​reservoirs. Seismic slicing is to recombine the original seismic data or the seismic data after some special processing in the horizontal direction to form a new data, and the new data can better express the change law of the data in the horizontal direction. Generally, seismic slices are divided into three categories. The first is isochronous slices, that is, seismic data are extracted along the same seismic reflection time to form new data; the second is slices along layers, including slices along a certain The geological horizon of seismic interpretation extracts seis...

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Problems solved by technology

[0003] In order to solve the problem that the seismic slices of the upper and lower walls of overthrust faults cannot be calculated at one time, and the information of the footwall of the fault is lost, the reservoir prediction work of making seismic slices and slice analysis for geological structures with overthrust faults is carried out. The present invention provides a A method for making seismic slices with overthrust faults. This method can simultaneously make seismic slices for the upper and lower walls of a geological model with overthrust faults. The upper and lower walls of the geological model are comprehensively used to increase the predictable area of ​​seismic reservoir prediction and save seismic interpretation. Workers' working hours, and make the prediction results more comprehensive and reasonable

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