井筒温压场下微型测量器运移模型及校正研究  

Transport Model and Correction of Miniature Measuring Instrument Under Wellbore Temperature and Pressure Fields

作　　者：廖星奥 李军[1,2] 杨宏伟 柳贡慧 刘伟[4] 李牧 廖茂林 Liao Xingao;Li Jun;Yang Hongwei;Liu Gonghui;Liu Wei;Li Mu;Liao Maolin(China University of Petroleum(Beijing);China University of Petroleum(Beijing)at Karamay;Beijing University of Technology;CNPC Engineering Technology R&D Company Limited;University of Science and Technology Beijing)

机构地区：[1]中国石油大学(北京) [2]中国石油大学(北京)克拉玛依校区 [3]北京工业大学 [4]中国石油集团工程技术研究院有限公司 [5]北京科技大学

出　　处：《石油机械》2023年第6期27-35,共9页China Petroleum Machinery

基　　金：国家自然科学基金重大科研仪器研制项目“钻井复杂工况井下实时智能识别系统研制”(52227804);国家自然科学基金青年科学基金项目“深井复杂地层智能井控井筒压力预测模型与优化控制方法”(52104012)。

摘　　要：目前微型测量器在随钻测量中只记录物理场参数和对应参数的时间参数,没有记录与井深相关的参数。为此,在相关研究的基础上,考虑井筒温压场的影响,建立微型测量器在井筒中的运移模型,并对其在井筒中运移的时间-深度关系进行校正研究。研究结果表明:微型测量器在井筒中的运移需要考虑井筒温压场的影响;校正后的微型测量器在井筒中运移的时间-深度关系的计算精度受校正次数影响较大,校正次数越多,反演得到的校正系数越趋于稳定;建立的微型测量器在井筒中运移的校正模型不仅能够较准确地计算出其在井筒中运移的校正系数,而且能够根据井下情况实时调整计算结果。所得结论可为微型测量器的现场应用提供理论指导。The miniature measuring instrument records only the physical-field parameters and corresponding time during meansurement while drilling(MWD),but no parameters related to well depth.Based on the relevant study,a wellbore transport model of the miniature measuring instrument that considers the effects of the wellbore temperature and pressure fields was established.Moreover,the time-depth correlation during the wellbore transport of the miniature measuring instrument was stuided and corrected.The results show that the wellbore transport of the miniature measuring instrument needs to consider the influences of the wellbore temperature and pressure fields.The accuracy of the corrected time-depth correlation during the wellbore transport of the miniature measuring instrument is greatly affected by the number of corrections-more corrections produce a more stable correction coefficient.The corrected wellbore transport model of the miniature measuring instrument can accurately calculate the correction coefficient for wellbore transport and also adjust the calculation results in a real-time manner depending upon the downhole conditions.The research findings provide a theoretical guidance for field applications of the miniature measuring instrument.

关 键 词：随钻测量 微型测量器 井筒温压场 运移模型 UKF反演算 校正系数 

分 类 号：TE927[石油与天然气工程—石油机械设备]