作　　者： ; ;

机构地区： 西北大学地质学系地质系

出　　处： 《石油地球物理勘探》 2000年第4期527-531,共5页

摘　　要： 运用地质、测井约束条件下的地震综合反演技术 ,对高阳三维地震探区下第三系内陆河湖相薄层砂岩储集岩系的几何形态、连续度和物性参数等的空间分布规律进行了横向预测。综合约束反演方法的核心是将钻井地质和测井垂向分辨率高与地震横向分辨率高的特点相结合 ,充分利用测井的低频 -高频成分和丰富的地震中频信息 ,以“岩心刻度测井、测井标定地震”为约束条件 ,通过迭代反演对模型进行不断修改 ,求取适合储层横向预测的优化宽带波阻抗模型。该方法提高了波阻抗剖面的分辨率和砂岩储层物性参数的预测精度。 Comprehensive seismic inversion technique restricted with geologic and logging data has been used to achieve the lateral prediction of shape, continuity and petrophysical parameters of Paleogene inland river lake facies thin sand reservoir series. The comprehensive inversion technique has some key characteristics: ·Combining high lateral resolution of seismic data with good vertical resolution of both core drilling and logging data ·Making full use of the low and high frequency contents in log data, and rich mid frequency seismic informations ·Taking restraints, namely, log data being calibrated by core, and seismic data being calibrated by log data ·The model is modified repeatedly, by iterative inversion, to produce the optimized wide band wave impedance model that is suitable to lateral reservoir prediction. The technique improves both the resolution of wave impedance section and the prediction accuracy of petrophysical parameters of sand reservoir.

关 键 词： 综合约束反演 横向预测 储集层 地震勘探

领　　域： [天文地球] [天文地球] [石油与天然气工程]