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An Automatic Reservoir History Fitting System Based on Genetic Algorithm and Its Fitting Method

A technology of history matching and genetic algorithm, which is applied in the field of geophysical exploration and development in geophysics, can solve the problems of increasing file occupation and low data retrieval efficiency

Active Publication Date: 2011-12-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following disadvantages in saving these data in text mode: first, with the increase of data, more and more computer resources are required to read and write files; second, when specific data is needed, the file must be scanned line by line, and the efficiency of data retrieval is low

Method used

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  • An Automatic Reservoir History Fitting System Based on Genetic Algorithm and Its Fitting Method
  • An Automatic Reservoir History Fitting System Based on Genetic Algorithm and Its Fitting Method
  • An Automatic Reservoir History Fitting System Based on Genetic Algorithm and Its Fitting Method

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Experimental program
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Embodiment

[0121] 1. Database design

[0122] (1) Individual information form

[0123] In order to store population information, an individual information table is designed, and the field descriptions are shown in Table 1.

[0124]

[0125]

[0126] Table 1

[0127] (2) Yield information table

[0128] According to the characteristics of the output file format of the simulator used, the storage table of the simulated output information is designed, and the description of the table fields is shown in Table 2.

[0129]

[0130] Table 2

[0131] The fitting evaluation function used is defined as:

[0132] F = E ( y i obs - y i calc ) - - - ( 1 )

[0133] in, is the result of simulation calculation ...

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Abstract

The invention provides an automatic oil deposit history fitting system and method based on a genetic algorithm, belonging to the field of oil deposit numerical simulation. In the invention, automatic history fitting is realized by taking a database as a data storage and computation center based on a generic algorithm flow. The system comprises an algorithm management module, a simulator pre-processing module, a simulator calling module, a simulator post-processing module a user interface module. Due to the adoption of the system and the method, automatic oil deposit history fitting is realized by organically combining the generic algorithm with a data technology, the indexing and storing process technology of a database is fully utilized, efficient storage of data is realized, a fitting evaluation value is calculated easily and rapidly, and the efficiency of automatic oil deposit history fitting is effectively increased.

Description

technical field [0001] The invention belongs to the field of geophysical exploration and development in geophysics, and in particular relates to an automatic history fitting method based on genetic algorithm and using database technology. Background technique [0002] History matching is a very important task in reservoir numerical simulation research. The mathematical methods used in automatic history fitting based on optimal control theory include traditional optimization algorithms, such as Gauss-Newton, Levenberg-Marquardt, PCG, BFGS, LBFGS, and modern optimization algorithms, such as genetic algorithm, ensemble Kalman filter , Response surface model. [0003] History matching is a very important link in reservoir numerical simulation research, and it is the basis for predicting oilfield development performance. The so-called history matching is to use the recorded formation static parameters to calculate the change history of the main dynamic indicators in the process...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06N3/12G01V9/00
Inventor 崔书岳康志江赵艳艳张杰
Owner CHINA PETROLEUM & CHEM CORP
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