Recognition method of stratum over-stripping based on iterative seismic DNA detection

An identification method and stratigraphic technology, applied in seismic signal processing and other directions, can solve problems such as relatively high accuracy requirements for unconformity surface horizon interpretation, low-angle stratigraphic overstripping identification effect is not obvious, single and so on

Active Publication Date: 2017-02-15
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

At present, the technical method for stratum over-stripping description is relatively simple, that is, the instantaneous phase attribute combined with the angle extrapolation distance formula, etc.
With the deepening of fine exploration, the existing technical methods have no obvious effect on the identification of over-stripping in low-angle formations, and the accuracy requirements for unconformity layer interpretation are relatively high

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  • Recognition method of stratum over-stripping based on iterative seismic DNA detection

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[0015] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0016] Such as figure 1 as shown, figure 1 It is a flow chart of the method for identifying stratum over-stripping based on iterative seismic DNA detection of the present invention.

[0017] In step 101, input a 3D seismic data volume, that is, a standard segy format file. The process goes to step 102.

[0018] In step 102, the horizon data of the unconformity surface are input, and the data format is abscissa, ordinate and time value, ie (x, y, z). The process goes to step 103.

[0019] In step 103, the target seismic data is acquired. According to the approximate range of stratum overstripping that needs to be identified, the unconformity horizon is used to set an appropriate time window to intercept the seismic data near the unconformity....

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Abstract

The invention provides a formation overlap-denudation line recognition method based on iteration earthquake DNA detection. The formation overlap-denudation line recognition method includes the steps of firstly, inputting a three-dimensional seismic data body and unconformable surface layer bit data; secondly, obtaining target seismic data; thirdly, converting the target seismic data into character data; fourthly, setting search parameters; fifthly, using wave group feature change positions meeting the search parameters as overlap-denudation points, and recording the overlap-denudation points; sixthly, outputting overlap-denudation lines, and obtaining the distribution of the overlap-denudation lines on a plane. The formation overlap-denudation line recognition method is based on iteration earthquake DNA detection, the accurate and efficient detection result can be obtained, and by means of the method, the labor intensity of geological research personnel can be lowered, and the exploration deployment quality and benefits can be improved.

Description

technical field [0001] The invention relates to the technical field of oil field development, in particular to a method for identifying stratum over-stripping based on iterative seismic DNA detection. Background technique [0002] Stratigraphic reservoirs are characterized by small oil layer thickness, low oil-bearing height, and narrow oil-bearing strips. Therefore, the fine characterization of stratigraphic superstripping lines is one of the key links in the exploration of stratigraphic reservoirs. At present, the technical method for describing stratum over-stripping is relatively simple, that is, the instantaneous phase attribute combined with the angle extrapolation distance formula, etc. With the deepening of fine exploration, the existing technical methods have no obvious effect on the identification of over-stripping in low-angle formations, and the accuracy requirements for unconformity layer interpretation are relatively high. For this reason, we invented a new id...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28
Inventor 管晓燕刘书会穆星罗红梅徐希坤刘昌毅唐东李敏郑文召康晏杨怀宇俞娟丽刘华夏
Owner CHINA PETROLEUM & CHEM CORP
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