河南理工大学学报（自然科学版）2018，Vol.37Issue(4)：61-67,7.
低渗透致密砂岩流体包裹体特征及油气充注期次——以姬塬油田延长组为例
Fluid inclusion and hydrocarbon charging stages of low permeability sandstone:A case study of Yanchang formation in Jiyuan oilfield
摘要
Abstract
Yanchang formation is the main oil-bearing segments of Jiyuan area,Ordos basin.The composition, morphology,spatial distribution and homogenization temperature of its fluid inclusion were systematic analyzed. Meanwhile,the period of hydrocarbon charge and reservoir forming was defined based on the basin burial histo-ry,hydrocarbon generation and paleotemperature evolution.The results show that there exist two types of fluid inclusions.One type has small single-size and low-abundance which is distributed in the inner margin area of the secondary enlargement of the quartz and calcite,the homogenization temperature ranges 63~87 ℃ and the average temperature is 80 ℃.The other type has large single-size and high-abundance which is distributed in the outer margin area of the secondary enlargement of the quartz and fracture-filling calcite,the homogenization temperature ranges 115~150 ℃ and the average temperature is 127 ℃.Through synthesis analysis of Yan-chang formation,the first time of hydrocarbon migration and reservoir forming was taken place in the early peri-od of Early Cretaceous(145 Ma ± ) and with small range of hydrocarbon filling and reservoir forming.In the late period of Early Cretaceous(110 Ma ± ),the main source rock(Chang 7) began to enter the peak hydrocar-bon-generating stage with massive hydrocarbon expulsion and the large range of reservoir forming.It is the main accumulation period of Yanchang formation in Jiyuan area.关键词
流体包裹体/均一温度/油气充注期次/延长组/姬塬油田Key words
fluid inclusion/ homogenization temperature/ hydrocarbon charge and reservoir forming period/Yanchang formation/Jiyuan oilfiled分类
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鲁金凤,郭峰,高剑波,刘志强,王凯,蔺重庆,刘雪..低渗透致密砂岩流体包裹体特征及油气充注期次——以姬塬油田延长组为例[J].河南理工大学学报（自然科学版）,2018,37(4):61-67,7.基金项目
国家重大基础研究(973)项目(2011CB201102) （973）
国家自然科学基金资助项目(41002043,41572106) （41002043,41572106）
陕西省教育厅重点科研项目(14JS081) （14JS081）
