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A Fusion Method of Seismic Attributes and Seismic Inversion Data Based on Fractal Theory

A seismic attribute and seismic inversion technology, applied in the field of oil and gas exploration, can solve problems such as low prediction accuracy, and achieve the effect of ensuring effective excavation and reducing multiple solutions

Active Publication Date: 2019-02-12
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a fusion method of seismic attributes and seismic inversion data based on fractal theory. The problem of low prediction accuracy in

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  • A Fusion Method of Seismic Attributes and Seismic Inversion Data Based on Fractal Theory
  • A Fusion Method of Seismic Attributes and Seismic Inversion Data Based on Fractal Theory
  • A Fusion Method of Seismic Attributes and Seismic Inversion Data Based on Fractal Theory

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, the present invention will be further described:

[0032] Such as figure 1 As shown, this fusion method of seismic attributes and seismic inversion data based on fractal theory:

[0033] Step 1: Extract the seismic attribute slices of the target sedimentary unit from the seismic post-stack data volume, extract the seismic inversion slices of the target sedimentary unit from the geostatistical inversion data volume, and combine the extracted seismic attribute slices and seismic inversion slices according to One-to-one correspondence between slice positions;

[0034] Step 2. Determine the iterative function IFS for geostatistical inversion data and seismic attribute data:

[0035] (1) Process seismic attribute data and geostatistical inversion data by local extremum method to obtain effective points M of fractal data;

[0036] (2) Determine the number of fractal sampling k, and use the relationship between data before and...

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Abstract

The present invention relates to a fusion method of seismic attributes and seismic inversion data based on fractal theory. This fusion method of seismic attributes and seismic inversion data based on fractal theory: step 1, extracting from the seismic post-stack data volume Seismic attribute slices, extracting seismic inversion slices from the geostatistical inversion data volume; Step 2, determining the iterative function IFS of the geostatistical inversion data and seismic attribute data; Step 3, using the iterative function IFS to perform Fractal sampling, and make a consistency judgment on the last fractal sampling result; step 4, carry out weighted fusion on the fractal sampling results of the two slices that are judged to be consistent in batches, make a reservoir prediction plan of the target depositional unit, and obtain the target depositional unit reservoir prediction results. The invention adopts the weighted fusion of different batches of data after fractal sampling, so that the geological information reflected by the two types of seismic attribute and inversion data can be displayed in the fusion result to the maximum extent.

Description

technical field [0001] The invention relates to the field of oil and gas exploration, in particular to a fusion method of seismic attributes and seismic inversion data based on fractal theory. Background technique [0002] Seismic data contains the information of oil and gas reservoirs, which is embodied in the changes of seismic attributes such as seismic wave waveform, amplitude, frequency, and phase. Seismic attribute data comes from the simple change of seismic data, which contains a large amount of underground geological information and has lateral density; therefore, oil and gas reservoirs can be predicted by using seismic attributes. However, due to the limitation of vertical resolution of seismic data itself and the influence of complex underground geological conditions, there are serious ambiguities in seismic attribute prediction of reservoirs. [0003] Seismic inversion combines well logging data to perform high-precision inversion of seismic data to directly obt...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30
CPCG01V1/306
Inventor 李婷婷许承武王岁宝马世忠于舒杰唐正浩
Owner NORTHEAST GASOLINEEUM UNIV
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