车镇凹陷郭局子洼陷北部陡坡带砂砾岩沉积序列

发布时间：2019-06-21 01:25

【摘要】：针对济阳坳陷车镇凹陷郭局子洼陷北部陡坡带砂砾岩扇体物源多、沉积速率快、沉积厚度大和多期叠置的特点,在岩心、FMI测井图像分析和对各种沉积序列划分方法优化的基础上,提出了砂砾岩沉积序列综合划分方法。先采用岩心和FMI测井图像划分砂砾岩沉积序列和标定岩电关系,再利用泥岩隔夹层识别、地层倾角测井资料、地震约束下曲线重组和测井曲线计算反射系数法来划分沉积序列;最后,利用地震时频分析和小波变换法,进行校验和补充。按照上述方法,将郭局子洼陷北部陡坡带沙一段砂砾岩划分为3个沉积序列,沙二段划分为4个沉积序列,沙三上亚段划分为2个沉积序列,沙三中—沙三下亚段划分为12个沉积序列,沙四段划分为5个沉积序列。
[Abstract]:In view of the characteristics of many sources, fast deposition rate, large sedimentary thickness and multi-stage superposition in the northern steep slope zone of Guojiazi sag in Jiyang depression, a comprehensive division method of gravel sedimentary sequence is put forward on the basis of core, FMI logging image analysis and optimization of various sedimentary sequence division methods. Firstly, core and FMI logging images are used to divide gravel sedimentary sequence and calibrate rock-electrical relationship, and then mudstone interlayer identification, formation dip logging data, curve recombination under seismic constraints and logging curve calculation reflection coefficient method are used to divide sedimentary sequence. finally, seismic time-frequency analysis and wavelet transform method are used to verify and supplement the sedimentary sequence. According to the above methods, the sand gravel in the first member of Shahejie formation in the northern steep slope zone of Guoqizi sag is divided into three sedimentary sequences, the second member is divided into four sedimentary sequences, the upper member of Sha3 is divided into 2 sedimentary sequences, the lower member of Sha3 to the third member is divided into 12 sedimentary sequences, and the fourth member is divided into 5 sedimentary sequences.
【作者单位】：中国石油大学胜利学院油气工程学院;中国石化胜利油田分公司勘探开发研究院;中国石油塔里木油田分公司勘探开发研究院;中国石化地球物理公司胜利分公司物探研究所;中国石化胜利油田分公司现河采油厂;
【基金】：国家科技重大专项(2017ZX05013-006-003)
【分类号】：P618.13

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