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作 者:杨兴[1] 李晓锋[1] Yang Xing;Li Xiaofeng(Fuxian Oil Production Plant of Yanchang Oilfield Co.,LTD,Yan'an 727500)
机构地区:[1]延长油田股份有限公司富县采油厂,陕西延安727500
出 处:《石化技术》2022年第11期134-136,共3页Petrochemical Industry Technology
摘 要:本文以鄂尔多斯盆地富县区长8油层组为研究对象,运用沉积岩石学、储层沉积学、层序地层学、测井地质学等多学科交叉的综合研究方法,在对鄂尔多斯盆地富县区长8油层组地层、沉积相和砂体展布特征进行系统划分与对比的基础上,对储层特征等进行系统的研究。在研究过程中,充分利用室内的岩心观察,野外的露头观察、铸体薄片分析以及扫描电镜、压汞实验等实验手段和数据,探讨了储层控制因素,并对储层进行了分类评价。研究表明,富县区在长8期主要为三角洲前缘的亚相沉积。长石砂岩作为主要的砂岩类型在该区的长8油层组发育,胶结物主要为绿泥石和碳酸盐。富县区延长组长8油层属于低孔特低渗储层,储层孔隙类型以残余粒间孔为主。In this paper,the Chang 8 oil-bearing formation in Fuxian district of Ordos Basin is taken as the research object,and the comprehensive research methods of Sedimentary Petrology,reservoir sedimentology,sequence stratigraphy and logging geology are used,based on the systematic division and correlation of the strata,sedimentary facies and sandbody distribution of Chang 8 oil-bearing formation in Fuxian district,Ordos Basin,the reservoir characteristics are systematically studied.In the course of the study,the controlling factors of reservoir are discussed by making full use of the experimental methods and data such as indoor core observation,field outcrop observation,cast thin section analysis,scanning electron microscope and mercury injection test,etc.,the reservoir is classified and evaluated.The study shows that the Fuxian area in Chang 8 period is mainly sub-facies of Delta Front.Feldspar Sandstone,as the main sandstone type,is developed in Chang 8 oil-bearing formation in this area,and the cement is mainly chlorite and carbonate.Chang 8 reservoir of Yanchang formation in Fuxian area is a low porosity and low permeability reservoir.
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