Improved method of particle swarm impedance inversion and its application

CHE Hongchang; REN Yaoyu; LIU Hanping; LIU Zhao

doi:10.3969/j.issn.1673-8926.2011.01.018

Lithologic Reservoirs >

2011 , Vol. 23 >Issue 1: 103 - 106

DOI: https://doi.org/10.3969/j.issn.1673-8926.2011.01.018

Improved method of particle swarm impedance inversion and its application

CHE Hongchang ,
REN Yaoyu ,
LIU Hanping ,
LIU Zhao

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College of Geophysics， Chengdu University of Technology， Chengdu 610059， China

Online published: 2011-02-20

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Abstract

A new method of particle swarm optimization（PSO） impedance inversion is proposed because of the short comings of conventional PSO algorithm which has slow convergence rate and low inversion efficiency. The algorithm uses PSO algorithm to calculating the sample number and impedance for each layer of the model, and then uses the scanning method to obtain the optimal number of the layer. Compared with conventional PSO algorithm, the examples of synthetic data showthat the method significantly improves the inversion accuracy and convergence rate, and the actual data also proves the validity of this method.

Key words： lowpermeability; active water; laboratory experiment; surfactant

Cite this article

CHE Hongchang , REN Yaoyu , LIU Hanping , LIU Zhao . Improved method of particle swarm impedance inversion and its application[J]. Lithologic Reservoirs, 2011 , 23(1) : 103 -106 . DOI: 10.3969/j.issn.1673-8926.2011.01.018

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