基于密度演化模型分析钻进中误差产生情况  

Analysis on Errors Produced in the Process of Drilling Based on Density Evolution Model

作　　者：田龙[1] 闫铁[1] TIAN Long;YAN Tie(Northeast Petroleum University, Heilongjiang Daqing 163000, China)

机构地区：[1]东北石油大学,黑龙江大庆163000

出　　处：《当代化工》2018年第5期1030-1033,共4页Contemporary Chemical Industry

基　　金：国家科技重大专项课题"钻井工程一体化软件"(2016ZX05020-006)

摘　　要：轨迹误差的产生原因在现代研究中已经有了具体并且详细的分析与论证,细分来说,根据测点位置的不确定性矩阵来确定该点误差椭球的具体理论与推导基本已完善,整体的分析方法中包含轨迹的计算误差分析,轨迹的测量误差分析,轨迹的不同误差源的产生分析,也均有具体的理论与论述,但分析的基础都是基于钻进完成的轨迹,是基于测段的研究,而基于随钻测量的轨迹误差以及误差源分析则相对较少,为了合理的确定钻进过程中的误差产生的具体情况,综合考虑了误差源产生原因,以及应用统计学理论中的概率密度演化方法,构建一个误差产生的概率密度的产生模型,以给出一个实用的分析方法。Trajectory error formation reasons have been specifically analyzed and argued in the modern research, specific theory and derivation to determine error ellipsoid of the point based on the uncertainty matrix at measuring point position have been perfect, the overall analysis method contains the trajectory calculation error analysis, the trajectory measuring error analysis, the error source analysis of trajectory. But the analysis is done based on the drilled trajectory, and error analysis and error source analysis based on the MWD trajectory are relatively less. In order to reasonably determine the error produced by the specific circumstances in the process of drilling, the error formation causes were analyzed in this paper, an error formation model based on the probability density was established by probability density evolution method in applied statistics theory, and a practical analysis method was put forward.

关 键 词：随钻测量 密度演化 误差量 概率密度 

分 类 号：TE21[石油与天然气工程—油气井工程]