摘要
Biot流动和喷射流动是含流体多孔隙介质中流体流动的二种重要力学机制,Dvorkin和Nur提出了同时包含Biot流动和喷射流动力学机制的统一的BISQ(Biot-Squirt)模型。由于BISQ模型的流体压力表达式十分复杂,MamadouS.D和ErwinA又在引入Squirt机制的同时提出了不含特征喷射流动长度的改进BISQ模型。这里基于改进BISQ模型,运用伪谱法进行了波场模拟,证实了快P波、慢P波、SV波和SH波的存在。通过与Biot模型和BISQ模型的比较,改进BISQ模型计算简单,便于描述,正演模拟结果也与其它二个模型保持一致,是一种可行的新BISQ模型。
The Biot-flow and Squirt-flow mechanisms are two important mechanisms of fluid flow in porous media with fluid.Dvorkin and Nur presented an unified BISQ(Biot-Squirt)model,but it is complex in fluid-pressure equation.Maradou S.D and Erwin A.presented a modefied BISQ model without the squirt flow length based on BISQ mechanism.In this paper,seismic wave-field forward problem based on the modified model is solved by using pseudo-spectral method.The results show the existence of fast P-Wave,slow P-Wave,SV-Wave and SH-Wave.Compared with Biot model and BISQ model,the modified BISQ model is easy to express and calculate with similar results to the former two models,being a feasible and new BISQ model.
出处
《物探化探计算技术》
CAS
CSCD
2007年第1期15-18,91-92,共4页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家863项目(2001AA602018-04)
关键词
改进BISQ
波场模拟
双相介质
伪谱法
reformed BISQ
wave-field modeling
porous media
pseudo-spectral method
