吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (1): 266-276.doi: 10.13278/j.cnki.jjuese.20190291
• 地球探测与信息技术 • 上一篇
陈祥忠1, 王斌2
Chen Xiangzhong1, Wang Bin2
摘要: 纵波各向异性裂缝预测方法是目前应用比较广泛、效果较好的一种裂缝预测方法;但传统椭圆拟合方法的准确性受到一系列因素的影响,致使裂缝密度反演结果不准确。本次研究根据Ruger方程精确式推导各向异性介质中储层裂缝密度的计算方法,该方法首先利用入射角、方位角、Thomsen各向异性三参数以及介质弹性参数的函数来计算纵波反射系数,然后根据纵波反射系数计算待测储层中裂缝的切向各向异性系数,最后根据各向异性系数计算待测储层的裂缝密度。利用该方法在四川盆地正坝南地区通过实际纵波AVOA数据反演法向和切向裂隙弱度预测裂缝密度,裂缝参数反演结果与钻井信息吻合;表明该方法能够用于裂缝储层预测,确定研究区裂缝发育情况。
中图分类号:
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