随钻密度仪旋转测量误差分析  

Error Analysis of Rotation Measurement in Density Logging While Drilling

作　　者：施斌全[1] 杨锦州[1] 

机构地区：[1]胜利油田有限公司钻井工艺研究院,山东东营257017

出　　处：《石油天然气学报》2009年第5期305-308,共4页Journal of Oil and Gas Technology

基　　金：国家"863"计划项目(2006AA060105)

摘　　要：从随钻密度仪的测量原理出发,首先分析了目前传统的"脊肋图"法校正密度测量误差,通过比较不同旋转情况下的测量误差,得出产生最大误差的模拟条件;然后在此模拟条件下计算不同偏移量产生的误差,并分析了旋转产生误差的原因;最后提出了旋转时测量地层的真实密度值的获取方法。On the base of the basic principle for density logging while drilling,first the measuring error of traditional 'the backbone-rib chart' correction method was analyzed.By means of comparing measuring error through various rotating conditions,the simulated conditions in the worst error were obtained.Then on the simulating condition,the error in different standoff was found out.At the same time,the reasons of causing the error were analyzed.At last the methods to obtain true formation density when device is rotating are proposed.

关 键 词：随钻密度仪 旋转测量 脊肋图 误差分析 

分 类 号：P631.83[天文地球—地质矿产勘探]