岩性油气藏 ›› 2019, Vol. 31 ›› Issue (2): 134142.doi: 10.12108/yxyqc.20190215
李亚哲, 王力宝, 郭华军, 单祥, 邹志文, 窦洋
LI Yazhe, WANG Libao, GUO Huajun, SHAN Xiang, ZOU Zhiwen, DOU Yang
摘要: 准噶尔盆地中拐-玛南地区上乌尔禾组为扇三角洲前缘亚相沉积的砂砾岩,具有厚度大、横向变化快、岩石结构成熟度和成分成熟度均低的特点。砂砾岩储层的关键控制因素为泥质含量,根据泥质含量对上乌尔禾组砂砾岩进行划分,可以分为含泥砂砾岩和富泥砂砾岩。利用单一的测井曲线难以有效识别研究区的泥质含量,根据常规测井曲线的响应特征,利用中子测井曲线和声波时差测井曲线的幅度差来拟合砂砾岩储层泥质含量曲线,再经地震波形指示反演来预测砂砾岩优质储层的平面展布,实现了砂砾岩储层的定量化预测。经过钻井证实,这一方法预测结果符合率较高,油气显示良好,展示了本区良好的勘探前景。
中图分类号:
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