摘要
胡尖山地区位于鄂尔多斯盆地陕北斜坡西缘中部,富县组是早侏罗世地层中重要的油气产层,具有油藏规模小、分布散、非均质性强的特点。为进一步提升勘探开发效果,在前人研究的基础上,利用岩心、测井曲线、铸体薄片及压汞测试等资料,对胡尖山H154地区侏罗系富县组油藏沉积特征和储层的微观及宏观特征进行了研究。结果表明:研究区富县组为河谷侵蚀背景下的辫状河沉积体系,主要发育有辫状分流河道、心滩、河道边缘和泛滥平原等沉积微相。储层岩性以岩屑长石砂岩为主,孔隙类型主要为粒间孔,粒度以中-细粒为主,储集和渗流能力总体较好。储层具有典型的正韵律和复合韵律特征,非均质性较强。
Hujianshan area is located in the middle of the western margin of Northern Shaanxi slope in Ordos Basin.Fuxian formation is an important oil and gas production layer in early Jurassic strata,which has the characteristics of small scale,scattered distribution and strong heterogeneity.In order to improve the exploration and development effect,based on previous studies,the sedimentary characteristics,microscopic and macroscopic characteristics of Jurassic Fuxian formation reservoir in Hujianshan H154 area were studied by using core,logging curve,cast thin section and mercury injection test data.The results show that the Fuxian formation in the study area is a braided river sedimentary system under the background of valley erosion,mainly developed sedimentary microfacies such as braided distributary channel,core beach,channel edge and flood plain.The major rock type of the reservoir is mainly feldspar-debris sandstone.The main pore types are intergranular pore,mainly is middle to fine particle size,and the reservoir property and seepage ability is generally good.The reservoir has typical characteristics of positive rhythm and compound rhythm,with strong heterogeneity.
作者
牛伟
杨晋玉
杨博
陈春恒
鲁晓斌
NIU Wei;YANG Jinyu;YANG Bo;CHEN Chunheng;LU Xiaobin(Northwest University,Xi'an Shaanxi 710018,China;Oil Production Plant 6 of PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710018,China)
出处
《石油化工应用》
CAS
2021年第11期96-101,共6页
Petrochemical Industry Application
关键词
富县组
沉积相
储层特征
胡尖山
鄂尔多斯盆地
Fuxian formation
sedimentary facies
reservoir characteristics
Hujianshan
Ordos Basin
