薄互层油气储集体多波地震正演模拟及成像研究

本文基于非均匀介质理论基础的有限差分法弹性波方程正演模拟方法,开展了小尺度、横向变化大的薄互层或不连续的非均匀储集体模型的地面多波地震弹性波模拟研究工作。通过对胜利油田垦71地区薄互层油气储集体多波地震进行正演模拟及资料处理,研究了弹性波场响应特征与储层参数变化之间的规律,指导了多波采集观测系统设计,验证了地面多波地震成像处理方法与软件的有效性和精度,进而为储层预测及评价提供依据和提高油气识别和预测的精度,具有重要的理论价值和实用意义。

Multiwave seismic forward modeling and imaging research on the laminar laryer reservoir body

Based on the finite difference approach elastic wave equation forward modelling method out of the theory of nonhomogeneous medium,the paper made the elastic wave modelling research on the earth surface multiwave seismic, referring to the microscales、the transverse laminar layer or the discontiguous nonhomogeneous reservoir body model. By the forward modelling and data processing on the laminar layer reservoir body to Ken 71 Area of Shengli Oilfield, we did the research on the rule between the response feature of elistic wave field and the change of reservoir parameters. The result directed the design of field layout and field seismic acquisition,verified the validity and precision of the earth multiwave seismic imaging processing method and software, provided evidences for the reservoir predication and evaluation,and improved the precision of the oil/gas identification and predication,with the important theoretical value and practical purpose.