朱华,杨光,苑保国,应丹琳,戴鑫,周红飞,徐世琦,谈健康
Zhu Hua,Yang Guang,Yuan Bao-guo,Ying Dan-lin,Dai Xin,Zhou Hong-fei,Xu Shi-qi,Tan Jian-kang
摘要: 四川盆地纵向上从震旦系—侏罗系共发现了包括常规天然气、致密气、页岩气、致密油4种类型的工业油气流,其中常规气主要发育于中三叠统雷口坡组及其以下的海相碳酸盐岩地层中,为了预测四川盆地常规天然气未来勘探方向,在系统总结四川盆地常规天然气地质条件、成藏富集规律的基础上,评价盆地常规天然气资源潜力,明确剩余资源空间分布。结果表明:①四川盆地具有构造分区明显、4套广覆式烃源层、多套大面积孔隙型储层发育的常规天然气地质条件;②常规天然气富集主要受优质烃源岩、台缘和台内高能滩相、古构造和成藏组合等因素的控制,具有大气田近源分布、相带控储、古侵蚀面改善储渗条件、继承性古隆起控制油气富集和运移、优越的成藏组合有利于形成大中型气藏等特点;③基于盆地常规天然气地质条件,立足于“层”,运用成因法、统计法及特尔菲综合法,预测四川盆地常规天然气地质资源量为12.5×1012m3。结合剩余资源空间分布特征,指出了四川盆地未来的总体勘探方向是:层系上主攻灯影组、龙王庙组及中二叠统勘探领域;区块上发展川中、川东地区,挖潜川南地区,开拓川西、川北地区。
中图分类号:
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