徐家围子断陷徐西斜坡带火山岩成藏条件分析  

Analysis on hydrocarbon accumulative conditions in volcanic rocks of Xuxi slope belt in Xujiaweizi fault depression

作　　者：刘家军[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《世界地质》2016年第1期191-196,共6页World Geology

基　　金：国家重点基础研究"973"项目(2009CB219308)资助

摘　　要：对烃源岩条件、储层特征及盖层条件进行分析,认为制约徐家围子断陷徐西斜坡带火山岩勘探的关键在于对气藏类型认识不清。典型气藏解剖及主控因素分析认为,与徐中地区、徐东地区典型火山岩构造-岩性气藏不同,徐西斜坡带主要发育地层超覆气藏、低幅度构造气藏及致密岩性气藏。斜坡带中部地层超覆圈闭和低幅度构造圈闭、斜坡带南部和北部酸性火山岩及中基性岩储层发育区为未来有利勘探方向。Hydrocarbon source rock conditions,reservoir characteristics and sealing conditions are analyzed.The results show that the key problem influencing exploration is uncler in recognition on the gas reservoir type in volcanic rocks of Yingcheng Formation in Xuxi slope belt of Xujiaweizi fault depression. Different from the typical volcanic structural-lithologic reservoir in Xuzhong and Xudong areas,there are stratigraphic onlap hydrocarbon gas reservoir,low amplitude structural gas reservoir and tight gas reservoir in the Xuxi slope belt,by the analysis of typical gas reservoir and main controlling factors. Stratigraphic onlap traps and low amplitude structural traps in the central Xuxi slope belt,and reservoir developed area of acid volcanic rocks and intermediate-basic volcanic rocks in the southern and northern slope belt are the next favorable targets for exploration.

关 键 词：火山岩勘探 地层超覆气藏 低幅度构造气藏 致密岩性气藏 徐西斜坡带 徐家围子断陷 

分 类 号：P618.130[天文地球—矿床学]