长垣南部低孔渗、低电阻率储层评价方法研究与应用  

Study of the Reservoir Evaluation Method of Low Porosity and Permeability in South Changyuan and Its Application

作　　者：吕洁[1] 李砚明[1] 李汉川[1] 苗清[1] 任莉[1] 

机构地区：[1]大庆钻探工程公司测井公司

出　　处：《国外测井技术》2012年第6期56-60,67,共6页World Well Logging Technology

摘　　要：本文针对长垣南部扶杨储层泥质含量高、低孔隙度低渗透率、低电阻率的特点,利用岩心数据结合测井资料,建立了储层孔隙度、渗透率参数的计算方法。通过岩心分析确定伊利石为扶杨油层主要粘土矿物类型,阳离子交换能力强,利用泥质砂岩阳离子交换容量求取粘土束缚水饱和度。由于储层孔隙结构复杂,微孔隙发育,采用有效介质对称电导率模型作为计算含水饱和度的方法。应用在长垣南部扶杨油层的测井资料解释中,提高了测井解释符合率,取得了较好的地质应用效果。Aimed at the property of high shaly sand with low porosity,low permeability and low salinity formation water,this paper improves the quantitative interpretation method of shale content,effective porosity and permeability.Illite is the main type of clay mineral.It has strong ability of cation exchangeable.Bound water saturation is calculated by using cation exchange capacity of shaly sand.It calculates saturation by using symmetrical effective medium conductance formulation since the formation is abundant of capillary bound water.Applying for interpreting logging data of Fuyang reservoir,it improves the logging coincidence and achieves good effects of geological applications.

关 键 词：扶杨油层 油水分布规律 微孔隙水 

分 类 号：P631.84[天文地球—地质矿产勘探]