仿真含裂隙地层地震记录的研究

Study of emulating seismogram of fractured formation

四川石油管理局地调处研究所, 南充637000

The Institute of the Geology Survey Division, Sichuan Petroleum Administration, Nanchong 637000.

本文介绍了含裂隙地层二线介质体的三分量波动方程和吸收边界条件, 叙述了不同裂隙性质地层的仿真单炮记录和横渡叠加时间剖面的正演方法, 给出了模型及实际的横波叠加剖面仿真实例。证明了本方法在地震记录波形特征分析以及时地震资料作出合理的地质解释方面有着十分重要的指导意义和实用价值。

This Paper presents 2-D tricomponent wave cquation and its absorping boundary conditions infractured formation,dcscribes the cmulation mcthod with which monoshot rccord and shoar wavestacking time scction can be simulatcd for various fracturcd layers, and shows somc models andexamples of emulating shcar wave stacking section. Finally, it is dcmostrated that the method isquitc applicable.