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在对层状各向同性和各向异性介质中井下地震源辐射波进行模拟时,常常使用的数值法(如有限差分和有限无法),将因井径与地层尺度间存在较大的标量差而出现困难。为了解决这个问题,我们用间接边界元法建立了一个通用算法,该算法可模拟层状横向各向同性(TI)介质中裸井和套管井中的震源辐射。该算法的基本做法是,在井壁(地层/水泥界面)两则
Numerical methods (such as finite difference and finite failure) commonly used in the simulation of radiated waves from downhole seismic sources in layered isotropic and anisotropic media will result in large scalar differences between the well diameter and the formation scale Difficulties arise. To solve this problem, we use the indirect boundary element method to establish a general algorithm that simulates source radiation in open wells and cased wells in lamellar transversely isotropic (TI) media. The basic approach to this algorithm is to have two in the wellbore (formation / cement interface)