三肇凹陷低渗透扶杨油层流动单元划分  

Flow unit division of Fuyang reservoir with low permeability in Sanzhao Depression

作　　者：李照永[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《断块油气田》2011年第1期66-69,共4页Fault-Block Oil & Gas Field

基　　金：国家科技支撑计划"复杂油气田高效开发技术研究"(2006BAB03B00)资助

摘　　要：为了指导油田完善注采系统和加密调整,实现精细化开发提高采出率,开展了低渗透扶杨油层流动单元研究。以精细地质研究为基础,根据渗流地质参数储层渗透率、地层系数和有效厚度与生产动态测试油井产液强度和产液量的相互关系,优选地层系数为流动单元划分参数,在沉积相控约束下,应用地层系数累计概率分布拐点截断法将扶杨油层流动单元划分为好、中、差3类,并对各类流动单元的分布特征、岩心、物性等进行了阐述。各类流动单元之间储层渗流差异明显,研究区生产状况与流动单元类型之间关系密切,生产井射孔井段内Ⅰ类流动单元比例较大的井产液量高,射孔井段Ⅱ类与Ⅲ类流动单元比例大的井产液量相对低,与流动单元划分结果较吻合。In order to guide the improvement of injection-production system and the infilling adjustment, we studied the flow unit of Fuyang reservoir with low permeability to achieve reservoir fine development for EOR. Based on the fine geologic study and the relationships of reservoir permeability, formation coefficient, effective thickness, oil production dynamic testing of producing fluid strength and producing fluid volume, the formation coefficients were chosen as the division parameters of flow unit. Under the control of sedimentary facies, the flow units of Fuyang reservoir were divided into three types as good, average and bad by using the inflection point interruption method of cumulative probability distribution of formation coefficient in this paper. Aimed at every flow unit, the distribution characteristics, core description and physical property were studied. The difference of reservoir percolation is obvious between the every reservoir flow unit and the relationship between production condition and flow unit is close in the study area. In the perforated interval of production well, the proportion wells with proportionately larger Ⅰ type flow units have high liquid production and the wells with proportionately large Ⅱ and Ⅲ type flow units have relatively low liquid production, which is consistent with the division results of flow units.

关 键 词：特低渗透 扶杨油层 流动单元 动态测试 

分 类 号：TE325[石油与天然气工程—油气田开发工程]