方法从岩心和测井响应分析入手，运用岩心观察、薄片鉴定、电镜扫描、岩化和地化综合分析等手段，对欧利坨子地区火山岩的储层特征和成藏条件进行研究。目的认识和评价该区火山岩油气藏的成藏特征及勘探潜力。为今后勘探开发该油气藏奠定基础。结果该区主要储集岩为粗面岩；储集空间可分为裂缝、熔孔（洞）、气孔、斑晶裂纹和晶间孔５种类型；储层分布范围约３０ｋｍ２，物性较好，圈闭条件优越，油源丰富。结论欧利蛇子地区大山岩储层发育，成藏条件好，具有较大的勘探开发潜力。 Methods Starting with core and log response analysis, the reservoir characteristics and reservoir forming conditions of volcanic rocks in Ouli Tuozi area are studied by means of core observation, thin slice identification, electron microscopy, petrified and geochemical analysis. Objective To understand and evaluate the reservoir forming characteristics and exploration potential of volcanic reservoirs in this area. Laying the foundation for future exploration and development of the reservoir. As a result, the main reservoir rock in this area is a rough rock. The reservoir space can be divided into five types: fissure, melt hole (hole), stomatal crack, pore crack and intercrystal pore. The reservoir distribution range is about 30km2, Superior trapping conditions, oil-rich. Conclusion The Dashanyan reservoir in the Oliver region develops well with favorable reservoir forming conditions and great exploration and development potential.