RESERVOIR WAVE FIELD CHARACTERISTIC NUMERICAL SIMULATION IN TWO-PHASE MEDIA

doi:10.3863/j.issn.1674-5086.2009.03.003

西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (3): 13-15.DOI: 10.3863/j.issn.1674-5086.2009.03.003

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RESERVOIR WAVE FIELD CHARACTERISTIC NUMERICAL SIMULATION IN TWO-PHASE MEDIA

LI Yong^1a，1b XIAO Fu-sen² MA Ting-hu² LI Yi-ming² TAN Yong²

1.Chengdu University of Technology:a.Key Laboratory of Earth Exploration and Information Techniques of Ministry of Education,b.College of Information Engineering,Chengdu Sichuan 610059,China;2.Development Company of PetroChina Southwest Oil/gas Field Chuandong,Chongqing 400021,China

Received:1900-01-01 Revised:1900-01-01 Online:2009-06-20 Published:2009-06-20

Abstract

Abstract:

Based on the equation of elastic wave propagation in two-phase media and by separating the equation of elastic wave,the dilatational wave equation in two-phase in media is derived.The higher finite-difference (FD) and the perfectly matched layer boundary conditions are used to numerical simulation.The numerical simulation of the any higher-order difference and automatic loading boundary conditions is realized.The results of the calculation show that in the two-phase media,there are the fast dilatational wave and slow dilatational wave and they are different obviously.The velocity of the fast P wave is higher.On the interface,incident fast P- wave will generate two kinds of transmission and two kinds of reflection waves.The slow P-wave has intensive attenuation.The dissipation modulus is smaller,then the slow P-wave is more obvious,vice versa.The high-order FD pattern of this method can reduce the numerical dispersion markedly,and improve the accuracy of numerical simulation effectively and with good adaptability.The operation is convenient and flexible.

Key words: two-phase media, wave equation, wave field characteristic, finite difference, numerical simulation

CLC Number:

TE122.2

LI Yonga;b XIAO Fu-sen MA Ting-hu LI Yi-ming TAN Yong . RESERVOIR WAVE FIELD CHARACTERISTIC NUMERICAL SIMULATION IN TWO-PHASE MEDIA[J]. 西南石油大学学报(自然科学版), 2009, 31(3): 13-15.

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RESERVOIR WAVE FIELD CHARACTERISTIC NUMERICAL SIMULATION IN TWO-PHASE MEDIA

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