碎屑岩储层声波地层因素公式及在WL油田应用  

An Acoustic Travel Time Formation Factor Formula for Fragmental Reservoir

作　　者：吴红军[1] 刘国民[2] 张韬[2] 崔衍领[3] 

机构地区：[1]中原石油勘探局钻井三公司测井公司,河南兰考475300 [2]中原油田分公司勘探开发科学研究院,河南濮阳457001 [3]中原油田分公司采油三厂,山东莘县252434

出　　处：《测井技术》2004年第1期48-50,共3页Well Logging Technology

摘　　要：根据声学原理分析论证了决定储层声波时差值大小的因素是储层有效孔隙度、孔隙纵横比和微毛细管孔隙构成的无效孔隙度。建立了碎屑岩储层声波地层因素公式中参数m的计算公式 ,使声波地层因素公式能够全面系统地描述储层有效孔隙度和声波时差的关系 ,广泛适应于碎屑岩储层有效孔隙度的计算 ,大大提高了所计算的储层有效孔隙度的精度 ,使计算值与实际值更加吻合。碎屑岩储层的声波地层因素公式在WL油田的应用 ,其公式的相关系数高达 0 .992 ,平均绝对误差仅为 0 .5 46%。公式的运用有效地提高了计算有效孔隙度的精度 ,提高测井解释符合率。According to acoustic principle ,the paper analyzes and expounds that the factors which affect the acoustic travel time are effective porosity, ratio of pore vertical-horizontal and micro-capillary porosity. A formula which computes parameter(m) of the acoustic formation factor formula is established so that the acoustic formation factor formula is used to systematically describe the relation between effective porosity and acoustic travel time, widely adapting to fragmental reservoir and greatly improving accurate degree of computing  .Acoustic travel time formation factor formula for WL Oilfield shows that its interrelated coefficient of computing  reaches 0.992 ,average absolute error is 0.546%, which means calculation accuracy of effective porosity and log interpretation agreement have been greatly improved.

关 键 词：碎屑岩储层 声波地层因素公式 有效孔隙度 孔隙纵横比 测井解释 

分 类 号：P631.814[天文地球—地质矿产勘探]