姬塬油田马家山地区长4+5_(1)亚段油藏特征及主控因素  

Reservoir Characteristics and Main Controlling Factors of Chang 4+5_(1)Subsection in Majashan Area,Jiyuan Oilfield

作　　者：沈明玲 冯小勇 张志鹏[3] 时保宏 崔郑曦 SHEN Mingling;FENG Xiaoyong;ZHANG Zhipeng;SHI Baohong;CUI Zhengxi(School of Earth Sciences and Engineering Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi′an Shiyou University,Xi′an 710065,China;Baota Oil Production Plant,Yanchang Oilfield Co.,Ltd.,Yan′an Shaanxi 716000,China;No.5 Oil Production Plant,Changqing Oilfield Company of CNPC,Xi′an 710200,China)

机构地区：[1]西安石油大学地球科学与工程学院陕西省油气成藏地质学重点实验室,西安710065 [2]延长油田股份有限公司宝塔采油厂,陕西延安716000 [3]中国石油长庆油田公司第五采油厂,西安710200

出　　处：《重庆科技学院学报（自然科学版）》2024年第1期7-14,共8页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项“陆相页岩气成藏主控因素及‘甜点’预测”(2017ZX05039-001)。

摘　　要：为了加深对姬塬油田马家山地区长4+5_(1)亚段油藏特征及其主控因素的认识,从烃源岩构造、优势砂体及物性特征等方面对其作了对比分析。分析认为:研究区位于长7段烃源岩生烃中心,具有成藏的有利基础;叠置的优势砂体,促成了长7段烃源岩向长4+5_(1)亚段排出油气运移的主要通道;分流河道交汇处高渗砂体与近东西向排状鼻隆构造的匹配形成了石油聚集的有利场所;长4+5_(1)亚段油藏在多因素的共同控制下主要发育岩性油藏,其纵向上的砂体结构决定了石油富集于长4+5^(2)_(1)小层。In order to deepen the understanding of reservoir characteristics and main controlling factors of Chang 4+5_(1)subsection in Majashan area of Jiyuan oilfield,a comparative analysis was made in terms of source rock structure,dominant sand body and physical properties.The analysis shows that the area is located in the hydrocarbon generation center of source rock of Chang 7 section,which has a favorable foundation for reservoir formation.The superimposed dominant sand body facilitated the main channel of hydrocarbon migration from source rock of Chang 7 section to Chang 4+5_(1)subsection.The matching between the high permeability sand body at the confluence of distributary channels and the near east-west row nose uplift structure forms a favorable place for oil accumulation.The Chang 4+5_(1)subsection reservoir is mainly lithologic under the control of many factors,and the longitudinal sand body structure determines that oil is enriched in the Chang 4+5^(2)_(1)small layer.

关 键 词：姬塬油田 马家山地区 长4+5_(1)亚段 油藏特征 油藏构造 储层物性 油藏展布 

分 类 号：P618[天文地球—矿床学]