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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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滨里海盆地盐下碳酸盐岩储层地震逐级预测方法
Keywords: 滨里海盆地,台地相碳酸盐岩,随机地震反演,马尔科夫链&mdash,蒙特卡罗算法,地质统计学协模拟
Abstract:
？滨里海盆地在盐下石炭系发育台地相碳酸盐岩，以裂缝—孔隙型储层为主，非均质性强，具有岩性复杂多样、储层物性和厚度变化快、单层厚度小的特征。针对这些难点，提出了随机地震反演和地质统计学协模拟实现储层的岩性和物性逐级预测。首先采用基于马尔科夫链—蒙特卡罗算法(mcmc)的随机地震反演获得高分辨率波阻抗和岩性反演结果，然后通过云变换方法分岩性建立波阻抗和孔隙度关系，并结合地质统计学协模拟对储层的孔隙度进行预测。反演结果纵向分辨率高，能识别2m以内的薄储层，同时井间横向变化合理，真实地反映了碳酸盐岩储层变化特征。该方法能解决类似非均质性薄储层预测的地质问题。？
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