【摘要】 采用了四阶空间中心差分和二阶时间中心差分方法和 Higdon吸收边界条件 ,开发了用于声波测井的三维有限差分模拟程序。用交错网格实现差分模拟。可以用来在 5 86微机和大型并行机上模拟各种复杂条件下的声波测井响应。最后给出了单极子和偶极子声源仪器在裸眼井和套管井中的计算实例。更多还原

【Abstract】 D Finite Difference Simulating Program for Acoustic Logging. WLT, 2001, 25(4): 273-277 The 3D time domain staggered grid centered finite difference method and Higdon absorb boundary conditions are adopted. 3D finite difference (FD) simulating code for acoustic logging is developed. This method is of the fourth order accuracy in space and second order accuracy in time. This 3D modeling program can be implemented in high grade 586 PC and parallel computers to simulate the acoustic logging tool responses under various borehole and formation conditions. Numerical examples of array sonic tools with monopole and dipole sources in open and cased holes are presented.更多还原