Method and system for determining seismic slice isochronism

A determination method and isochronous technology, applied in the field of petroleum exploration, can solve problems such as affecting the effective application of slicing results

Active Publication Date: 2013-12-18
PETROCHINA CO LTD
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Problems solved by technology

At present, there is no effective method for judging the isochronism of slices a...

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  • Method and system for determining seismic slice isochronism
  • Method and system for determining seismic slice isochronism
  • Method and system for determining seismic slice isochronism

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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] The main purpose of the present invention is to provide a seismic slice isochronism analysis technology based on isochronous marker layer identification, Wheeler domain conversion, residual dip calculation and data volume fusion display for the problem of whether stratum slices are isochronous. The following is a detailed introduction.

[0028] figure 1 A flow chart of a method for determining the isochronism of seismic slices provided by an embodiment...

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Abstract

The invention provides a method and system for determining seismic slice isochronism. The method includes the steps that seismic data are collected; the seismic data are identified to obtain the isochronal maker bed of the seismic data and two events corresponding to the isochronal maker bed; according to the events, a stratum time model is established; according to the time model, Wheeler domain conversion is performed on the seismic data to obtain a geologic age domain amplitude data cube; reflection inclination angles corresponding to the geologic age domain amplitude data cube are determined; according to the reflection inclination angle and the geologic age domain amplitude data cube, the slice isochronism is determined; according to the slice isochronism, oil and gas exploration is performed. The problem that because the stratum deposition rate changes, whether seismic slices are isochronal or not is difficult to determine is solved, and the seismic slice isochronism is effectively judged.

Description

technical field [0001] The present invention relates to the technical field of oil exploration, in particular to the oil and gas exploration technology based on seismic sedimentology, specifically a method and system for determining the isochronism of seismic slices. Background technique [0002] With the advancement of seismic acquisition and processing technology, seismic sedimentology plays an increasingly important role in oil and gas exploration. Stratigraphic slice technology is one of the key technologies in seismic sedimentology analysis. Stratigraphic slicing is a technique for studying the plane distribution of sedimentary systems and sedimentary facies by slices of a series of layers interpolated in equal proportions along two isochronous interfaces. Currently commonly used slicing techniques include time slicing, layer-wise slicing and stratigraphic slicing. The following will introduce them one by one. [0003] Time slicing is to slice and display the seismic...

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Application Information

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IPC IPC(8): G01V1/30
Inventor 苏明军刘化清倪长宽张兆辉蔡刚
Owner PETROCHINA CO LTD
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