东营凹陷民丰断裂带地区地震反演及储层预测

Seismic data inversion and reservoir prediction in Minfeng fault zone of Dongying sag

(1.中国石油大学(华东)地球资源与信息学院，山东东营257061；2.中国石化集团胜利油田有限公司东辛采油厂，山东东营257043)

College of Geo-resources and Information, China University of Petroleum, Dongying 257061, China

储层地震预测技术以油藏描述理论为指导，利用由地震资料反演得到的波阻抗或波速数据体，准确地描述储层分布状态和油藏储量规模。研究中综合应用地震解释软件和反演软件各自的优点，针对东营凹陷民丰断裂带地区沙二、沙三段的具体地质情况，开展了全面而系统的研究。通过精细构造解释，建立精细地质模型，采用多井约束反演，进行砂体储层预测。对地震反演资料补充测井数据的高、低频成分之后，波阻抗数据体的频带显著拓宽，剖面内垂向变化趋势合理，分辨率高，据此预测的两个砂体经钻探均见工业油流。

Seismic reservoir prediction technique is guided by reservoir description theory to describe the distribution and scale of reservoirs by means of velocity or impedance data inversed from general seismic data. Aiming at the concrete geological characteristics of the second and the third sections of Shahejie group in Minfeng fault zone, the seismic data interpretation and inversion software were integrated to do entire and systemic research. The fine geological model was established according to the detailed structure interpretation. Then, multi-well constrained inversion was utilized to predict the reservoirs. After logging data have been supplemented with high and low frequency components, the frequency width of wave impedance data volume was widened. Thereby, the vertical alternation in profiles became reasonable and the resolution was improved. Commercial oil fluid was drilled in two sand bodies predicted by this method. 