测井约束地震反演在储层预测中的应用  

Application of log-constrained seismic inversion in reservoir prediction

作　　者：康红庆[1] 马春华[1] 宋考平[2] 

机构地区：[1]中油大庆油田有限责任公司,黑龙江大庆163511 [2]教育部提高油气采收率重点实验室东北石油大学,黑龙江大庆163000

出　　处：《特种油气藏》2012年第3期14-17,151,共4页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金"低渗透油层渗流机理研究"(50634020);国家自然科学基金"油层多孔介质内纳米渗流动力学模型"(10172028);黑龙江省科技攻关计划"聚合物驱改变驱油波及体积的机理研究"(CC05S305)

摘　　要：AB油田的声波测井曲线对储层与非储层的响应差异不明显,因此选择对储层反映明显的自然电位曲线替换声波曲线,即利用相邻井的时深关系把自然电位曲线重构成具有声波曲线量纲的新曲线。在此基础上,将测井曲线的高频信息和三维地震资料精细、三维可视化的优点有机结合,进行井约束地震反演,对井间储层进行预测。反演结果表明,4 m以上砂体识别率为97.9%,主力油层井间河道砂体分布准确率达到80%以上。There isn’t much difference in acoustic log responses between reservoirs and non-reservoirs in the AB oilfield,so that spontaneous potential curve which reflects obvious reservoirs has been used instead of acoustic log,i.e.to reconstruct SP curve into a new curve with the dimension of acoustic log curve by using the time-depth relation of offset wells.Therefore,the high frequency information of logs can be integrated with fine and visualized 3D seismic data to conduct seismic inversion and predict reservoirs.The inversion results demonstrate that the identification rate of sands over 4m thick is up to 97.9%,and the accuracy rate of cross-well channel sands distribution is up to 80% and above.

关 键 词：测井约束地震反演 声波曲线重构 储层预测 砂体识别 AB油田 

分 类 号：TE122.2[石油与天然气工程—油气勘探]