基于岩石物理模型的测井约束横波速度计算方法研究  

THE STUDY ON S-WAVE VELOCITY CALCULATION METHOD CONSTRAINED BY LOGGING BASED ON ROCK PHYSICS MODELS

作　　者：周中彪[1] 

机构地区：[1]中国石油大学(华东),山东青岛266555

出　　处：《物探化探计算技术》2010年第5期536-541,共6页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：在横波速度计算方面采用经验公式往往精度有限,通过对岩石物理模型的研究分析,采用Xu-White模型法来计算横波速度。为了减少误差,应用模拟退火算法对孔隙度参数进行修正,再利用修改后的孔隙度,结合其它参数最终得到精确的横波速度。在实际工区中,计算的横波速度和实际的横波速度吻合程度较高,误差小于10%。The accuracy of calculating the S-wave velocity using empirical formula is often limited.By research and analysis of rock physics model,Xu-White model method is used to calculate the S-wave velocity.In order to reduce error,simulated annealing methods is used to change the porosity parameters,and we get the final S-wave velocity using the modified porosity and in combination with other parameters,which is more accurate.In the work area,the S-wave velocity which is calculated by Xu-White model match the actual S-wave velocity in a higher degree,and the error is less than 10%.

关 键 词：横波速度 模量 模拟退火 孔隙度 

分 类 号：P631.4[天文地球—地质矿产勘探]