断-貌双控渤中26-6油田太古界潜山储层综合预测
范廷恩 , 杜昕 , 樊鹏军 , 马淑芳 , 梁旭 , 牛涛
地球科学 ›› 2023, Vol. 48 ›› Issue (02) : 429 -438.
断-貌双控渤中26-6油田太古界潜山储层综合预测
Fault-Landform Double Controlled Archean Buried-Hill Reservoir Integrated Prediction for BZ26-6 Oil Field, Bohai Bay
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渤中26-6油田太古界潜山储层品质受风化程度与裂缝发育共同控制,为实现储层评价与储量动用,形成基于断-貌双控的太古界潜山储层综合预测技术. 潜山上覆地层时代关系与沉积厚度决定了潜山风化剥蚀程度,基于此通过古地貌恢复实现储层风化程度平面分区. 印支期形成的近东-西向高角度断裂与印支至喜山期长期活动的边界正断层对油田裂缝发育起重要控制作用,基于Radon变换与蚂蚁体技术实现裂缝发育平面预测. 以风化程度平面分区为低频,裂缝发育平面预测为高频,利用高阶小波变换技术实现高、低频信息有效融合,综合表征储层品质. 基于融合属性将储层划分为I类、II-1类与II-2类,I类储层品质最佳,为东营组地层沉积之前太古界潜山持续出露同时裂缝带发育区域. II-1类储层品质次之,为沙河街组地层沉积之前太古界潜山持续出露同时裂缝带发育区域. II-2类与II-1类储层品质接近,为东营组地层沉积之前太古界潜山持续出露但裂缝带一般发育区域. 分类结果与测井及测试资料认识吻合,指导建立了油田储量动用策略,证实基于风化及裂缝发育主控因素开展地震储层预测,并基于属性融合方法实现结果综合的太古界潜山储层技术思路具有实用意义.
太古界潜山 / 古地貌 / 风化程度 / 高角度断裂 / 裂缝预测 / 属性融合 / 小波变换 / 石油地质
Archean buried hill / ancient landform / weathering degree / high-anglefault / fracture prediction / attribute fusion / wavelet transform / petroleum geology
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中国海油集团公司十四五重大科技项目(KJGG2022-0700)
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