标题:
水平井阵列持水率测井资料成像插值算法分析Analysis on Imaging Interpolation Algorithm for Logging Data of Water Holdup Array Tool in Horizontal Wells
作者:
宋红伟, 郭海敏
关键字:
水平井, 阵列持水率仪, 流动成像, 生产测井;Horizontal Well, Water Holdup Array Tool, Flow Imaging, Production Logging
期刊名称:
《Journal of Oil and Gas Technology》, Vol.38 No.1, 2016-03-14
摘要:
随着科学技术的进步，成像观测技术越来越先进。流动成像测井方面，国外各大测井公司均推出了全井眼测量阵列持率测井仪，测量在井中相同深度上套管内壁附近或分布在不同半径的圆周上的局部持水率。基于电容阵列持水率测井仪CAT的测井数据特征，分析了简单距离反比加权插值、高斯径向基函数插值、普通克里金插值和克里金中的变差函数距离反比插值算法的原理，然后对4种插值算法在理论和实际应用方面进行了比较，试验数据成像处理效果图和误差综合分析结果表明，普通克里金插值算法的成像效果和误差估计总体比其他3种插值算法好，能较直观反映井内油水介质的分布和井筒截面上总的持水率值。
With the progress of science and technology, imaging observation technology was more and more advanced. The large well logging companies abroad pushed out the full well logging tool of array holdup applied in flow imaging logging; this tool could measure the local water holdup at the circular ring inner wall of the casing at the same depth. Based on data feature of logging data of CAT, the principles of simple inverse distance weighting value, Gauss basis function interpolation, ordinary Kriging interpolation and variogram function inverse weighting method were analyzed in this paper. The comparison of these interpolation methods both in theory and in practical application shows that the result of Kriging interpolation method is better than that of the other three methods. The result can better show the distribution of the medium of oil-water in the well and total water holdup clearly and directly.