摘要
鄂尔多斯盆地王渠则区不同部位石油富集程度差异较大,主要受到储层的影响。因此,需要明确该区域的储层特征及其控制因素,以指导下一步石油勘探。利用岩石铸体薄片、扫描电镜、压汞和物性等资料,对王渠则区延9储层特征进行研究,并从多种角度分析了影响研究区延9储层物性特征的因素。结果表明:研究区延9储层主要以中粒长石岩屑砂岩为主,填隙物主要为高岭石和硅质,储集空间主要以残余粒间孔和溶蚀孔为主;吼道较细,属细吼型;储层物性较差,孔隙分选连通性较好,属低孔-低渗储集层。影响储层物性的因素主要有碎屑颗粒矿物成分、碎屑粒度、沉积微相和成岩作用(压实、胶结和溶蚀)等。
Oil enrichment degree varies greatly in different parts of Wangquze area of Ordos Basin,which is mainly affected by the reservoir.Therefore,it is necessary to define the reservoir’s characteristics and control factors in this area to guide the oil exploration.Based on the data of rock casting thin section,scanning electron microscope,mercury injection and physical properties,this paper studied the physical characteristics of Yan9 reservoir in Wangquzhe,and analyzed the factors influencing the physical characteristics of Yan9 reservoir from various angles.The results show that the reservoir of Yan9 in the study area is mainly composed of medium-grained feldspar lithic sandstone,the interstitial fillings are mainly kaolinite and siliceous,and the storage space is mainly composed of residual intergranular pores and dissolution holes.The connectivity is fine,belongs to the fine connective type;The reservoir is a low porosity and low permeability reservoir with poor physical properties and good pore sorting connectivity.The main factors influencing reservoir physical properties are clastic particle mineral composition,clastic particle size,sedimentary microfacies and diagenesis(compaction,cementation and dissolution).
作者
韩华峰
邵鑫笛
刘寒梅
Han Huafeng;Shao xindi;Liu Hanmei(Yanchang Oil Field Co.,Ltd..Jingbian Oil Mining Factory,Jingbian 718500,China;School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China)
出处
《云南化工》
CAS
2018年第11期27-30,33,共5页
Yunnan Chemical Technology
