摘要
在野外露头勘测、岩心观察、薄片鉴定及测井资料解释的基础上,对靖安地区延10~延9油层组各小层沉积微相特征和砂体叠置关系进行研究。结果表明延10油层组以辫状河沉积为主,发育河道砂坝和泛滥平原等沉积微相;延9油层组以三角洲平原沉积为主,划分为分流河道和河道间等沉积微相。延10油层组砂体垂向叠置类型为块状厚层砂体,且以延101^1-2小层最为发育,砂体横向叠置主要为垂向叠置和切割叠置,代表性层位为延101^1和延101^2小层。延9油层组砂体垂向叠置类型主要为薄互层砂体,发育在延92^2小层,砂体的横向叠置类型以水平搭接式和孤立状为主,代表性层位为延91^2和延92^2小层。
On the basis of field outcrop survey,core observation,thin section identification and logging data interpretation,the sedimentary microfacies characteristics and the superposition relationship of sandbodies of each layer from Yan 9 to Yan 10 reservoir formations in Jing’an area were studied.The results show that the Yan 10 reservoir formation mainly develop braided river sedimentary subfacies,and sedimentary microfacies such as channel sand bar and flood plain;while the Yan 9 reservoir formation meinly develop delta plain subfacies,which can be divided into distributary channel and interchannel sedimentary microfacies.The vertical superposition type of sandbody of Yan 10 reservoir formation is mainly massive thick sandbody,with Yan 101^1-2 layer developed most;the horizontal superposition type of sandbody are mainly vertical stacking and dissected superimposed sand bodies,and the representative layers are Yan 101^1 and 101^2 layers.The vertical stacking type of sand body in Yan 9 reservoir formation is mainly thin interbedded sandbody,which is mainly developed in Yan 922 small layer;the horizontal superposition type of sandbody is mainly horizontal lap and isolated sandbody,and the representative layers are Yan 91^2 and 92^2 layers.
作者
赵辉
杨学武
岳文成
邹盛林
郭艳琴
惠磊
蔡志成
ZHAO Hui;YANG Xue-wu;YUE Wen-cheng;ZOU Sheng-lin;GUO Yan-qin;HUI Lei;CAI Zhi-cheng(Geology Institute of Third Oil Production Plant of PCOC,Yinchuan 750000,China;School of Earth Sciences and Engineering/Key Laboratory of Shaanxi Province for Oil and Gas Accumulation Geology,Xi’an Shiyou University,Xi’an 710065,China)
出处
《西安科技大学学报》
CAS
北大核心
2020年第4期646-657,共12页
Journal of Xi’an University of Science and Technology
基金
国家科技重大专项专题(2017ZX05005-002-004)
陕西省自然科学基础研究计划项目(2017JQ4018)。
关键词
靖安地区
延安组
沉积相
砂体叠置关系
延10~延9油层组
Jing’an area
Yan’an Formation
sedimentary facies
sandbody superimposion relation
Yan 10~Yan 9 reservoir formation
作者简介
第一作者:赵辉(1982-),男,宁夏永宁人,工程师,E-mail:615736366@qq.com;通讯作者:郭艳琴(1972-),女,陕西佳县人,博士,教授,E-mail:guoyanqin@xsyu.edu.cn。
