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Rock reservoir structure characterization method, device, computer readable storage medium and electronic equipment

A reservoir and rock technology, applied in the field of rock reservoir structure characterization, can solve problems such as the inability to guarantee the validity, reliability and noise resistance of input features

Active Publication Date: 2021-02-26
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a rock reservoir structure characterization method, device, computer-readable storage medium and Electronic equipment, which can solve the problem that the existing data-driven machine learning method for describing reservoirs cannot guarantee the validity of input features and at the same time ensure the reliability and noise resistance of clustering, so it is more suitable for practical use

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  • Rock reservoir structure characterization method, device, computer readable storage medium and electronic equipment
  • Rock reservoir structure characterization method, device, computer readable storage medium and electronic equipment
  • Rock reservoir structure characterization method, device, computer readable storage medium and electronic equipment

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Embodiment 1

[0102] See attached figure 2 The rock reservoir structure characterization method provided by Embodiment 1 of the present invention includes the following steps:

[0103] Obtain the 3D seismic data volume of the key layer of the rock reservoir to be characterized; in this embodiment, the 3D seismic data volume refers to the data volume obtained by seismic data migration imaging, which can display the basic stratigraphic structure, and is useful for finding and describing the target Reservoirs are critical. The specific data format is N*M*T, wherein, N represents that there are N channels of data in the length direction of the work area, M represents that there are M channels of data in the width direction of the work area, and there are N*M channels of seismic data in the work area, and T is the longitudinal depth of each channel of data ( That is, it represents the longitudinal depth of the work area). Assuming that N=200, M=100, T=100, the length and width seismic trace s...

Embodiment 2

[0163] See attached Figure 11 , the rock reservoir structure characterization device provided by Embodiment 2 of the present invention includes:

[0164] The 3D seismic data volume acquisition unit is used to acquire the 3D seismic data volume of the key layers of the rock reservoir to be characterized;

[0165] The data decomposition unit is used to decompose the data of the 3D seismic data volume to characterize the key layers of the rock reservoir to obtain multiple intrinsic mode function components;

[0166] The data conversion unit is used to perform data conversion on a plurality of intrinsic mode function components to obtain the time-frequency spectrum of the plurality of intrinsic mode function components, and add the time-frequency spectra of all the intrinsic mode function components to obtain the time-frequency spectrum of the seismic data;

[0167] The data fitting unit is used to perform cross-correlation between the time-frequency components of each time-freq...

Embodiment 3

[0172] The computer-readable storage medium provided by the present invention stores a rock reservoir structure characterization program, and when the rock reservoir structure characterization program is executed by a processor, the steps of the rock reservoir structure characterization method provided by the present invention are implemented.

[0173] The computer-readable storage medium provided by the present invention is a rock reservoir structural characterization based on a fuzzy C-means clustering algorithm, which can reduce the interference caused by deep weak amplitude and noise during the process of feature extraction and feature classification of seismic data, Fully extract the multi-scale features of the waveform, strengthen the constraints of the actual logging data, and take into account the lateral continuity of the seismic waveform, so as to ensure the noise resistance and reliability of the clustering results, and can solve the existing data-driven machine learn...

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Abstract

The application discloses a rock reservoir structure characterization method, device, computer-readable storage medium, and electronic equipment. The method includes: acquiring a three-dimensional seismic data volume of the rock reservoir to be characterized, and decomposing it; Transform the intrinsic mode function components to obtain the time spectrum, and add the time spectra of all components to obtain the time spectrum of the seismic data; through the time frequency components of each time spectrum of the side-hole seismic trace and the synthetic seismic trace of the logging data Cross-correlation screens out the sensitive components with the highest correlation as input features, and performs fuzzy C-means clustering and spatial smoothing on them to obtain seismic facies with set standard division; characterize the rock reservoir to be characterized, and obtain the rock reservoir to be characterized Structural representation. The means, media and equipment can be used to carry out the method. They can solve the problem that the existing data-driven machine learning methods to characterize reservoirs cannot guarantee the validity of input features, clustering reliability and noise resistance.

Description

technical field [0001] The invention relates to a rock reservoir structure characterization method, in particular to a rock reservoir structure characterization method, device, computer-readable storage medium and electronic equipment. Background technique [0002] In the prior art, there is a rock reservoir structure characterization method through empirical mode decomposition and KNN clustering algorithm, which has the following technical defects: different seismic traces have different numbers of IMF components, and the corresponding seismic sections of each IMF component No lateral continuity; no quantitative constraints of actual logging response; each data in the KNN clustering method only belongs to one sedimentary facies, without its degree of membership to each sedimentary facies, which is not conducive to further smooth analysis of clustering results . In the prior art, there is also a rock reservoir structure characterization method through SST and K-Means cluste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V1/36G06K9/62
CPCG01V1/307G01V1/36G01V2210/21G01V2210/679G06F18/23G06F18/24G01V1/284G01V1/282G01V1/32G01V1/366G01V2210/32G01V1/302G06N20/00G06N7/023G06F30/20G06F2111/10G01V99/005G06F17/14G06F17/18
Inventor 单小彩周永健辛维田飞杨长春
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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