摘要
东营凹陷古近系深部碎屑岩储层岩心、试油、实测物性等资料较缺乏,导致有效储层物性下限计算困难。综合运用分布函数曲线、测试、试油和束缚水饱和度等方法,确定研究区有效储层物性下限,并对其影响因素进行分析。结果表明:有效储层孔隙度下限与深度的对数呈线性关系,渗透率下限与深度呈指数函数关系;有效储层物性下限受储层性质、原油性质、温度、压力等因素的影响,次生孔隙会增大有效储层孔隙度下限,原油密度、黏度越低,有效储层物性下限越小,地层温度增加、深部超压均会使有效储层物性下限降低;有效储层物性下限主要由温-压系统控制。
Due to the lack of core, formation testing and testing physical properties data, it is difficult to determine the phys- ical property lower limit of the deep clastic effective reservoir of Palaeogene in Dongying depression. By applying distribution function curve, testing, formation testing and irreducible water saturation method, the physical property lower limit of re- searched area was determined, and the influence factors were analyzed. The results show that the porosity lower limit and log depth are linear relationship, and the permeability lower limit and depth are exponential relationship. The reservoir property, crude oil property, temperature and pressure affect physical property lower limit of effective reservoir. Secondary pores in- creases the porosity lower limit of effective reservoir. The lower the density and viscosity of crude oil, the smaller the physical property lower limit of effective reservoir. The physical property lower limit of effective reservoir reduces with temperature ris- ing or deep overpressure. The physical property lower limit of the effective reservoir is mainly controlled by temperature-pres- sure system.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第4期16-21,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
教育部新世纪优秀人才支持计划(NCET-06-0604)
国家油气重大专项(2008ZX05051-02-01)
中国石油大学(华东)优秀博士论文培育项目
关键词
有效储层
物性下限
影响因素
古近系
东营凹陷
effective reservoir
physical property lower limit
influence factor
Palaeogene
Dongying depression
