| 气侵期间套压的控制作用分析 |
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| 引用本文： | 王果,樊洪海,王志华.气侵期间套压的控制作用分析[J].钻采工艺,2010,33(2):24-27. |
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| 作者姓名： | 王果 樊洪海 王志华 |
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| 作者单位： | 1. 中国石油大学石油工程教育部重点实验室·北京
2. 北京科技职业学院八达岭校区信息工程学院 |
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| 基金项目： | 国家科技重大专项21课题3 "窄密度窗口安全钻完井技术及装备"项目资助 |
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| 摘 要： | 以环空气液两相流动为理论基础，建立了井筒气侵流动计算模型，同时给出了计算模型的数值求解方法。通过研究不同气体侵入速度和井口工作套压对侵入气体体积和井底压力的影响作用，分析了发现溢流后，在井口加压的控制作用，提出了在循环钻进时维持一定的井口工作压力，发现溢流后提高井口压力的控制方法。这种作业方式能够有效的减缓气体的侵入、已侵气体对井眼的影响作用，控制气侵流体在井眼中的膨胀运移，降低井控作业的风险。
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| 关 键 词： | 套压 气侵 压力控制 气体特性 |
ANALYSIS OF CASING PRESSURE CONTROL ACTION IN GAS KICK WELLS |
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| WANG Guo,FAN Honghai,WANG Zhihua.ANALYSIS OF CASING PRESSURE CONTROL ACTION IN GAS KICK WELLS[J].Drilling & Production Technology,2010,33(2):24-27. |
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| Authors: | WANG Guo FAN Honghai WANG Zhihua |
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| Affiliation: | WANG Guo1,FAN Honghai1 , WANG Zhihua2(1.MOE Key Laboratory of Petroleum Engineering in China University of Petroleum(Beijing),2.Beijing University of Science , Technology) |
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| Abstract: | Based on gas liquid two-phase flow theory in annulus,well bore calculation model of gas overflow was established,the numerical computation method was illustrated.Effects of gas invasion rate and casing pressure on bottom pressure were studied.The control behavior of well head pressure which was put after gas invasion was analyzed.One control method,which maintained certain well head pressure while circulating drilling,was presented.The pressure should be increased when gas kick was detecting.This method cou... |
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| Keywords: | surface casing pressure air cutting pressure control gas characteristic |
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