宋站凸起营城组火山岩分布特征及气藏分布规律

Distribution characteristics of volcanic and gas reservoir distribution regularities of Yingcheng Formation in Songzhan local uplift of Xujiaweizi fault-depression

李笑梅

 LI Xiaomei

中国石油大庆油田有限责任公司勘探开发研究院，黑龙江 大庆 163712

 (Research Institute of Exploration and Development, Daqing Oilfield Company Ltd., PetroChina, Daqing 163712, China)

 徐家围子断陷宋站凸起深层天然气剩余资源潜力较大，具备良好的天然气成藏条件，是徐家围子断陷深层未来天然气勘探的重点领域，但其火山岩分布及气藏分布规律不明确。文中在大量统计分析和地质研究的基础上，探讨了营城组火山岩的分布特征以及气藏分布特征和气藏类型。系统分析并总结出了气藏形成、控制因素、分布规律：1）优质烃源岩控制气藏规模及气藏分布范围；2）火山喷发期次顶部良好的储集空间控制气藏富集部位；3）火山岩相带控制气藏分布；4）构造高部位有利于火山岩气藏富集。

 The gas residual resource in Songzhan local uplift of Xujiaweizi fault-depression shows great potential, which has provided favorable accumulation conditions for gas and serves as the key field of gas exploration in the future of Xujiaweizi fault-depression. However, the distribution characteristics of volcanic and gas reservoir distribution regularities are not clear. Based on plenty of statistical analysis and geological study, the distribution characteristics of volcanic and the distribution characteristics and type of gas reservoir of Yingcheng Formation are explored. The controlling factors and distribution of gas reservoir formation are analyzed systematically. The results show that the distribution range of mature source rocks controls the scale and distribution of gas reservoir; the best reservoir space of volcanic eruption stage controls the enrichment of gas reservoir; volcanic facies belt controls gas reservoir distribution; high position of the structure is favorable for accumulation of volcanic gas reservoirs.

10.6056/dkyqt201706008