网络出版日期: 2011-02-20
Improved method of particle swarm impedance inversion and its application
Online published: 2011-02-20
车洪昌 , 任耀宇 , 刘汉平 , 刘钊 . 改进的粒子群波阻抗反演方法与应用[J]. 岩性油气藏, 2011 , 23(1) : 103 -106 . DOI: 10.3969/j.issn.1673-8926.2011.01.018
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
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