榆科地区沙一段储层特征及对产能的影响  

The Reservoir Characteristics and the Impact on Productivity of Es1 in Yuke Area

作　　者：陈佩佩[1] 胡望水[1] 江舟[2] CHEN Pei-pei HU Wang-shui JIANG Zhou(Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University1 , College of Geosciences, Wuhan 430100, P.R. China Huabei Oilfield Company, Petro China2 , Renqiu 062550, P. R. China)

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室地球科学学院,武汉430100 [2]中石油华北油田勘探开发研究院,任丘062550

出　　处：《科学技术与工程》2016年第31期24-30,共7页Science Technology and Engineering

基　　金：国家自然科学基金(40872099)资助

摘　　要：为研究榆科地区沙一段储层特征、储层与产能关系以及储层特征对产能的影响,运用薄片、电镜等分析化验资料,在确定榆科地区发育曲流河三角洲相和湖泊相的前提下,从岩石学特征、物性、储集空间及孔隙结构、成岩作用四方面着手进行分析,发现储层岩性以长石岩屑质石英砂岩和长石砂岩为主,成分成熟度偏低,结构成熟度中等,整体属于中-低孔、中-低渗储层,粒间溶孔为主要孔隙类型,喉道类型以微喉道和片状喉道为主;成岩作用类型中以压实、胶结作用使砂岩储集体孔隙大大降低;溶蚀、溶解作用使孔隙喉道增加,储层渗透性变好。优选孔隙度、渗透率、泥质含量、沉积相和砂岩厚度5个特征参数,将榆科地区沙一段储层分为Ⅰ、Ⅱ、Ⅲ、Ⅳ类,结合试油资料进行分析,发现不同类型的储层其油层发育及产能具有较大的差异,且控制作用明显,表现为Ⅱ类储层单位产能达到1.40 t/m,日产量达到96.19 t/d,为最具潜力储层;Ⅲ类储层单位产能为0.96t/m的情况下,日产仍能达到80.23 t/d,为主要产油储层类型之一。The paper is aims to analysis the reservoir characteristics, the relationship between reservoir and pro- ductivity, and the influence of reservoir characteristics on productivity of Esl formation in Yuke area. On the prem- ise of detailed research of sedimentary facies, which draw a conclusion that Yuke area developed meandering river delta facies and lake facies of Esl formation sedimentary period. Through the analysis of test data, such as chip in- formation and electron microscopy （sere）, from four aspects to study the reservoir characteristics which are petrolo- gy characteristics, physical properties, pore structure and space, diagenesis. The comprehensive results are the reservoir sandstone lithology of Esl formation in Yuke area mainly feldspar lithic quartz sandstone and arkose, with low compositional maturity and medium textural maturity, the reservoir property is secondary to low porosity and secondary to low permeability, the main pore types are intergranular dissolved pore, the main throat types are micro throat and flake throat. Diagenesis types of compaction and cementation make sandstone reservoir porosity greatly reduced. Part of secondary pore are formed by dissolution, meanwhile pore throat increase because of dissolve, which lead to better reservoir permeability. Optimized five characteristic parameters which are porosity, permeabili- ty, shale content, sedimentary facies and sandstone thickness, divided Esl reservoir into class Ⅰ , Ⅱ, Ⅲ, Ⅳ. Combined with oil production testing data, from the analysis there is a conclusion that different types of the reservoir with great control function, and the reservoir development and reservoir capacity has great difference, class Ⅱ res- ervoirs unit production is 1.4 t/m,and the daily production reached 96. 19 t/d, which is the most potential reservoir, and the second is class Ⅲ reservoir under the condition that unit production is 0.96 t/m, and the daily pro- duction still reached 80. 23 t/d, is one of the main oil reservoir type.

关 键 词：储层特征 榆科地区 沙一段 储层类型 产能 

分 类 号：TE121.32[石油与天然气工程—油气勘探]