岩性油气藏 ›› 2018, Vol. 30 ›› Issue (4): 113.doi: 10.12108/yxyqc.20180401
• 油气地质 • 下一篇
王建功1,2, 张道伟3, 易定红1, 袁剑英1,2, 石亚军1, 马新民1, 高妍芳1, 张平1, 王鹏3
WANG Jiangong1,2, ZHANG Daowei3, YI Dinghong1, YUAN jianying1,2, SHI Yajun1, MA Xinmin1, GAO Yanfang1, ZHANG Ping1, WANG Peng3
摘要: 柴达木盆地西部地区下干柴沟组上段为一套含湖相碳酸盐岩地层,在狮子沟地区已发现了高产含油层系和多口日产千吨以上的高产井。为了进一步探索湖相碳酸盐岩油藏特征和分布规律,基于测井、地震以及岩心观察和储层分析化验资料,对湖相碳酸盐岩的元素地球化学特征、结构类型、沉积特征及沉积相展布进行了系统研究。结果表明,柴西地区湖相碳酸盐岩为混合沉积成因,岩性主要为灰云岩和泥灰岩,其次为白云岩和灰岩;碳酸盐岩的结构组分以灰泥为主,其次为颗粒。碳酸盐岩沉积微相主要有泥灰坪和灰云坪,其次为藻滩和颗粒滩。其岩性组合受古地貌、古水介质和古气候的影响,发育有局限性湖泊、半封闭性湖泊与开阔性湖泊等3种碳酸盐岩沉积序列及沉积模式。
中图分类号:
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