声波地层因素公式在文留油田的应用  

Application of Acoustic Wave Formation Factors Formula to Wenliu Oilfield

作　　者：张鲁惠[1] 杨晓东 王蛇[1] 周燕平[3] 楚红霞[1] 

机构地区：[1]中原油田分公司采油一厂,河南濮阳457005 [2]中油测井华北事业部解释中心,河北任丘062552 [3]中原油田分公司勘探开发科学研究院,河南濮阳457001

出　　处：《大庆石油地质与开发》2005年第4期97-98,共2页Petroleum Geology & Oilfield Development in Daqing

摘　　要：通过引进储层孔隙纵横比的概念,根据声学原理分析论证了决定储层声波时差(Δt)大小的因素是储层有效孔隙度(φ)、孔隙纵横比(h)和束缚水所占无效孔隙度(φwi)。建立了文留油田储层声波地层因素公式中参数m的确定方法,其公式的相关系数高达0.992,平均绝对误差仅为0.546%,公式的运用提高了计算φ的精度。根据声波地层因素公式对储层的描述,能够全面了解文留油田φ与Δt之间的变化规律,有利于提高测井解释符合率。The concept of aspect ratio for reservoir pores has been established. According to acoustic principles, it is determined that the factors controlling the moveout of reservoir acoustic wave are effective porosity of reservoirs, aspect ratio of pores and ineffective porosity occupied by irreducible water. Method to determine the parameter m in the formation factors formula has established to greatly improve the accuracy of calculated effective reservoir porosity. The relative ratio of the formula can reach 0.992 with the average absolute error of 0.546%. The application of the formula can increase the accuracy of calculating effective porosity. Based on the description of reservoirs through acoustic wave formation factors formula, the changing rules between the effective porosity of Wenliu oilfield and acoustic wave moveout can be understood. This can help increase the coincidence rate of logging and further develop the field.

关 键 词：孔隙纵横比 有效孔隙度 声波地层因素公式 

分 类 号：P631.824[天文地球—地质矿产勘探]