摘要
本文提出一种井间复杂介质中的精确射线层析成像方法。该方法给出了一种以节点速度的局部线性函数来表示单元速度分布的块模型描述,在这种模型下作者导出了精确的正反演计算公式。从而避免了常规弯曲射线层析成像中反演参数与模型参数之间的不一致性,解决了常规弯曲射线层析成像中的正反演不匹配问题。并提出了一种改进的打靶方法,大大提高了运算速度。数值的与实际应用的结果表明,本文给出的精确射线层析成像算法是快速、稳定、可靠、适用的.
This paper proposed a crosshole tomographic method using precise ray-tracing in complex medium,The block model is described by local linear function of mode for cell velocity distribution,and precise inversion formula corresponding with forward calculation was given. It was not only avoid the disagreement between model parameters and inversion parameters but also soluted dismatch problem on forward and inversion in traditional curve ray-tracing. In order to make forward calculation fast, an improved shot-method was used in two-point problem. The numerical and practical application results show that the proposed precise ray method is fast, stable, reliable and applicable.
出处
《物探化探计算技术》
CAS
CSCD
1993年第2期129-136,共8页
Computing Techniques For Geophysical and Geochemical Exploration
