摘要
松辽盆地北部长垣外围油田未动用储量主要集中在葡萄花油层和扶余油层,均以河流相沉积为主,具有砂体规模小、厚度薄、横向连续性差的特点,地震识别单砂体难度大。为此,文中在现有地震保幅处理和精细解释的基础上,提出最大限度提高地质模型精度,即平面上根据砂体发育特征分区预测,纵向上根据砂体组合特征精细确定预测目标,整体与局部结合,去伪存真优选地震预测结果。在古龙地区应用后,预测精度由63.0%提高到83.7%。
The non-producing reserves in the peripheral oilfield along the placanticline, northern Songliao Basin are found mainly in Putaohua oil layer and Fuyu oil layer featured with small sand body size, thin depth and poor lateral continuity caused by fluvial deposition, which makes it hard for seismic identification of single sand body. Based on the current amplitude-preserved processing and fine log interpretation, this paper proposed a method to improve the accuracy of geologic model： first, predict regionally on the plane according to the growth characteristics; second, determine precisely the prediction target vertically according to the combination features of sand body. Application of this method in Gulong Area proved that the prediction accuracy was improved from 63% to 83.7%.
出处
《断块油气田》
CAS
北大核心
2015年第5期561-564,共4页
Fault-Block Oil & Gas Field
关键词
河道砂体
井震结合
储层预测
地质模型
channel sand body
well-seismic integration
reservoir prediction
geological model
