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Method and device for determining formation dip angle

A technology of formation dip and determination method, applied in the field of geological exploration, to achieve the effect of ensuring calculation efficiency

Active Publication Date: 2019-08-06
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a method and device for determining the dip angle of the stratum to solve the problem in the prior art that it is easy to estimate the dip angle of the stratum edge region as the average dip angle of the events on both sides of the fault

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  • Method and device for determining formation dip angle
  • Method and device for determining formation dip angle

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0036] Considering that when determining the formation dip angle in the prior art, because the formation edge regions such as faults and unconformities are not treated differently from the regions with good seismic event ductility, it is easy to estimate the dip angle of the above formation edge regions as the events on both sides of the f...

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Abstract

The present invention provides a dip angle determination method and device, wherein the method comprises the steps of calculating the total energy of the to-be-measured seismic data in each of a plurality of preset directions; determining the maximum value of the plurality of total energies, and determining the direction corresponding to the maximum value; calculating a dip angle of the maximum value corresponding direction, and using the determined dip angle as the dip angle corresponding to the to-be-measured seismic data. According to the embodiments of the present invention, a local inclination angle calculation result of higher accuracy is guaranteed while the calculation efficiency is guaranteed, thereby improving the performances of a seismic data processing, explaining and inversion method characterized by data driving.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a method and device for determining the dip angle of a formation. Background technique [0002] Geological exploration targets often have formation dips, so in the process of data-driven seismic data processing, interpretation and inversion, if the actual formation dips of exploration targets are not considered, the accuracy of geological data interpretation may be greatly affected , and even lead to wrong results. Therefore, it is of great significance how to calculate a stable and accurate formation dip, and then analyze along the direction of the formation dip to obtain more accurate geological target interpretation results. [0003] At present, formation dip can be determined by local dip stacking method, plane wave decomposition filter method, scanning search method based on coherence measure and gradient structure tensor method. However, most of the above-m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V1/36
CPCG01V1/301G01V1/362
Inventor 李海山杨午阳高建虎周春雷杜炳毅鄢高韩
Owner PETROCHINA CO LTD