摘要
大庆外围低孔渗储层的复杂孔隙结构特征制约其饱和度参数的计算精度.分析岩性、物性等岩心分析资料和岩心含油状况,岩层中泥质、钙质胶结是造成储层孔隙结构复杂的重要因素之一,也是造成储层含油状况差的主要原因.以双水饱和度模型为基础,选取外围扶杨油层典型岩心样品进行实验,建立地层因素参数与孔隙度、渗透率、泥质含量、钙质含量等参数的关系式,以及饱和度指数与孔隙度、渗透率的综合关系式,使地层因素参数与饱和度指数更适合大庆外围低孔渗储层的复杂孔隙结构.密闭取心井验证结果表明,饱和度相对误差为7.6%,达到实际生产应用要求.
The complex pore structure of Daqing low permeability and porosity reservoir constraints the accuracy of saturation parameters. From the core analysis such as lithology and property we found that rocks in the mud and calcareous cementation is one important factor for the complex pore structure. Integrated with the occurrence of core oil, this factor also contributed to the poor condition of the oil reservoir. Based on the dual water saturation model, in this paper, we select the typical rock samples of Fuyang reservoir to test, for establishing the relationship between formation factor F with porosity, permeability, clay and calcium content, at the same time, according to the experiment to set up the relationship between saturation exponent n with porosity and permeability. So we can make the formation factor F and saturation exponent n more suitable for low permeability and porosity reservoirs of study area. Verified by coring well, the relative error of the calculation of saturation is 7.6%, meeting the requirements of actual production.
出处
《大庆石油学院学报》
CAS
北大核心
2011年第6期9-12,27,共5页
Journal of Daqing Petroleum Institute
关键词
扶杨油层组
低孔渗储层
孔渗综合参数
含水饱和度
地层因素参数
Fuyang oil layer
low permeability and porosity reservoir
integrated parameters of porosity and permeability
water saturation
formation factor parameter
