“断凸”对金龙油田火山岩储集层的控制作用  

Controls of Faulted Salient on the Volcanic Reservoir in Jinlong Oilfield, Junggar Basin

作　　者：赵飞 李景景[2] 韩宝[2] 李维[2] 张琴[3] ZHAO Fei;LI Jingjing;HAN Bao;LI Wei;ZHANG Qin(Center, China Geological Survey, Xi’an, Shaanxi 710054, China;Research Institute of Petroleum Exploration and Development,Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

机构地区：[1]中国地质调查局西安地质调查中心,西安710054 [2]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [3]中国石油大学油气资源与探测国家重点实验室,北京102249

出　　处：《新疆石油地质》2017年第6期665-672,共8页Xinjiang Petroleum Geology

基　　金：国家973项目(2015CB250900)

摘　　要：准噶尔盆地西北缘中拐凸起东斜坡佳木河组"断凸"古地貌对金龙油田佳木河组火山岩储集层的发育特征有着多方面的控制作用。利用岩心、钻井、测井、地震、普通薄片及物性资料,综合分析了"断凸"对佳木河组火山岩岩性、岩相、有利储集层、圈闭和油气藏分布的控制作用,为下一步有利火山岩储集层预测和勘探部署提供依据。研究区火山岩类储集层岩性分为火山熔岩、火山碎屑熔岩、火山碎屑岩以及沉火山碎屑岩4大类,受"断凸"控制,整体上自西向东火山作用减弱,而沉积作用增强,导致了岩相上由火山口相、爆发相、喷溢相过渡为火山沉积相。"断凸"控制的岩性、岩相、构造断裂及风化淋滤作用是储集层的主要控制因素。研究区最好的储集层分布于断凸带的构造高部位。"断凸"的形成直接控制了断块、断鼻型和断凸带东部岩性尖灭型圈闭和油气藏类型分布。The ancient landform of“faulted salient”in Jiamuhe formation of eastern slope of Zhongguai swell in the northwestern margin of Junggar basin has several controlling effects on the development characteristics of the volcanic reservoir in Jiamuhe formation of Jinlong oil-field.Using the data of core,drilling,logging,seismic,thin section and physical properties,the paper comprehensively analyzes the controls of the faulted salient on lithology,lithofacies,favorable reservoir,trap and reservoir distribution of the volcanic rocks in Jiamuhe formation,providing scientific basis for volcanic reservoir prediction and exploration.The lithology of the volcanic reservoir in the study area can be divided into4categories such as volcanic lava,pyroclastic lava,pyroclastic rock and sedimentary pyroclastic rock.Controlled by the faulted salient,volcanism weakens but sedimentation enhances from west to east,resulting in the sedimentary facies transition from crater facies,explosive facies and effusive facies to volcanic sedimentary facies.Lithology,lithofacies,structural fracture and weathering and leaching constrained by the faulted salient are the main controlling factors.The best-quality reservoir in the study area is distributed on the high position of the faulted salient.The forming of the faulted salient can directly control trap patterns such as faulted-block trap,faultednose trap and lithological pinchout trap in the eastern part of the faulted salient,and reservoir distributions.

关 键 词：准噶尔盆地 金龙油田 断凸 火山岩储集层 火山岩岩相 油气藏类型 

分 类 号：TE112.222[石油与天然气工程—油气勘探]