志丹油田纸坊北油区三叠系延长组长6-长9储层致密史与油藏成藏史研究  

COMPACTING AND ACCUMULATION HISTORY OF CHANG 6-CHANG 9 RESERVOIRS FROM THE TRIASSIC YANCHANG FORMATION IN ZHIDAN OILFIELD

作　　者：刘玲[1] 张创 孙明 LIU Ling;ZHANG Chuang;SUN Ming(Exploration and Development Research Center of Yanchang Oilfield Co.,Ltd.,Yan’an 716000,Shaanxi Province,China;Zhidan Oil Production Plant of Yanchang Oilfield Co.,Ltd.,Yan’an 717500,Shaanxi Province,China)

机构地区：[1]延长油田股份有限公司勘探开发技术研究中心,陕西延安716000 [2]延长油田股份有限公司志丹采油厂,陕西延安717500

出　　处：《地质与资源》2023年第3期327-334,共8页Geology and Resources

基　　金：中国博士后科学基金资助项目“永宁油田纸坊北-顺宁油区三叠系延长组综合地质研究”(2019M653891XB).

摘　　要：通过对志丹油田纸坊北地区长6—长9不同层段储层研究,恢复砂岩储层成岩致密化过程,建立各个层位砂岩孔隙演化规律.依据流体包裹体均一温度、荧光光谱测试分析,确定了研究区长6—长9油层组石油充注期次和时间,查明了该区油藏的成藏史.对成岩-致密-成藏的耦合关系分析结果揭示,研究区长6—长9油藏为“先致密、后成藏”的成岩-成藏特征,为下一步成藏主控因素确定及有利区预测提供理论依据.The diagenetic densification process of sandstone reservoir is restored and pore evolution law of sandstone in each horizon is established through the study of Chang 6-Chang 9 reservoirs in North Zhifang area of Zhidan Oilfield.The oil charging period and time of Chang 6-Chang 9 oil groups,as well as the accumulation history of oil reservoir in the area,are determined on the basis of analysis on homogenization temperature of fluid inclusions and fluorescence spectrum test.The analysis of coupling relationship between diagenesis-densification-accumulation reveals that the Chang 6-Chang 9 reservoirs are characterized by densification before the hydrocarbon accumulation,which provides a theoretical basis for determination of the main controlling factors of accumulation and prediction of favorable areas in the future.

关 键 词：流体包裹体 致密史 成藏史 延长组 储层 志丹油田 

分 类 号：P618.13[天文地球—矿床学]