颉永琛,关平,杨国军,保吉成
XIE Yong-chen,GUAN Ping,YANG Guo-jun,BAO Ji-cheng
摘要:
南八仙复杂断块油气田,其油气藏富集受构造、断层、岩性等多重因素的控制。深层E13气藏为原生高压气藏,且以凝析气藏为主;中浅层N1—N22气藏为次生正常压力油气藏,油气藏类型复杂多样。参考近期区域勘探研究成果,试采开发动态资料,分析了南八仙“上油下气、以气为主”的成藏规律,认为E13气藏为2期充注,构造相对完整,圈闭保存条件好,形成异常高压原生气藏;E23原生油气藏受到后期仙北大断层的破坏,油气向浅层运移聚集;N1—N22油气藏为断层、岩性圈闭的产物,一期充注,属正常压力的次生油气藏,油气主要富集于圈闭条件较好的仙北大断层的下盘。
中图分类号:
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