金山气田致密砂岩储层含气性叠前地震预测方法研究  

Study of pre-stack seismic prediction on tight-sand reservoir gas-bearing of Jinshan gas field

作　　者：贾跃玮[1] 王丹[1] 魏水建[1] 张广权[1] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《物探化探计算技术》2017年第5期626-631,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家科技重大专项(20162X05017005)

摘　　要：松辽盆地金山气田致密砂岩储层物性较差、流体地震响应特征弱,储层含气性有效识别和预测是精细勘探开发的关键。基于叠前地震道集提高品质处理及入射角道集叠加处理,开展致密砂岩含气储层AVO响应特征分析,优选流体因子属性定性预测含气储层展布范围;基于致密砂岩含气储层岩石物理交会分析,寻找含气性敏感弹性参数,优选纵横波速度比参数开展叠前反演刻画含气储层展布规律,实现致密砂岩储层含气性的定量预测。实际应用研究表明,预测结果与实钻井符合率较高,对其他地区致密砂岩储层含气性预测研究具有借鉴意义。The physical property and fluid seismic response features of tight sand reservoir of Jinshan gas field are very poor.Effective identification and prediction on reservoir gas-bearing is a key for detailed exploration and production.Based on pre-stack seismic gather quality improved processing and incidence stack processing,the tight-sand gas-bearing AVO response feature are analyzed.The fluid factor attribute is seleceted to qualitatively predict gas-bearing distribution area.Based on the rock physics cross-plot analysis of tight sand gas-bearing reservoir,the hydrocarbon sensitive elastic parameters are selected.The Vp/Vs ratio,which is acquired through pre-stack inversion,can depict gas-bearing reservoir boundary.The quantitative prediction of tight sand gas-bearing can be researched through all above methods.The practical application reveals that the prediction results have high coincidence rate with drilled wells.This study can be used as a reference to other tight sand reservoir gas-bearing prediction research.

关 键 词：致密砂岩 AVO 流体因子 叠前地震反演 

分 类 号：P631.4[天文地球—地质矿产勘探]