| 控压钻井气侵后井口回压的影响因素分析 |
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| 引用本文： | 宋荣荣,孙宝江,王志远,刘晓兰,马永乾.控压钻井气侵后井口回压的影响因素分析[J].石油钻探技术,2011,39(4):19-24. |
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| 作者姓名： | 宋荣荣 孙宝江 王志远 刘晓兰 马永乾 |
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| 作者单位： | 中国石油大学（华东）石油工程学院，山东东营 257061；2.中国石化胜利石油管理局钻井工艺研究院，山东东营 257017 |
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| 基金项目： | “十一五”国家科技支撑计划项目”三高气井井筒压力控制技术”(编号:2008BAB3 7B02); 国家自然科学基金项目”含天然气水合物相变的环空多相流动研究”(编号:50874116); 山东省自然科学基金项目“含天然气水合物相变的三相多组分多相流动理论”(编号:Z2007A01),山东省自然科学基金项目“深水钻探隔水管中的段塞流生成机制与控制方法研究”(编号:Y2007A32)联合资助 |
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| 摘 要： | 控压钻井过程中，实时控制井底压力主要靠调节和控制井口回压。通过分析控压钻井中的瞬变过程，建立了各过程中的多相流计算模型，并利用有限差分法对模型进行了求解。通过仿真算例分析了采取控压钻井时井口回压随时间的变化规律，讨论了返出钻井液增量、气相渗透率、排量、钻井液密度、初始井底压差、井深和黏度等对井口回压的影响规律。结果表明:返出钻井液增量越大，井口施加的回压也越大；在返出钻井液增量一定的条件下，气相渗透率、排量、钻井液密度、初始井底压差、井深和黏度对井口回压均有影响，气相渗透率越大、排量越小、钻井液密度越小、初始井底压差越大、井越深、钻井液黏度越小，气体到达井口时需要施加的回压峰值也越大。
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| 关 键 词： | 控压钻井 回压 气侵 多相流 排量 渗透率 钻井液密度 钻井液黏度 |
| 收稿时间： | 2018-11-11 |
Analysis of the Influence Factors of Wellhead Back Pressure in Managed Pressure Drilling after Gas Invasion |
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| Song Rongrong,Sun Baojiang,Wang Zhiyuan,Liu Xiaolan,Ma Yongqian.Analysis of the Influence Factors of Wellhead Back Pressure in Managed Pressure Drilling after Gas Invasion[J].Petroleum Drilling Techniques,2011,39(4):19-24. |
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| Authors: | Song Rongrong Sun Baojiang Wang Zhiyuan Liu Xiaolan Ma Yongqian |
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| Affiliation: | Song Rongrong~1,Sun Baojiang~1,Wang Zhiyuan~1,Liu Xiaolan~2,Ma Yongqian~2 (1.College of Petroleum Engineering,China University of Petroleum(Huadong),Dongying,Shandong,257061,China,2.Drilling Technology Research Institute,Shengli Petroleum Administration,257017,China) |
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| Abstract: | It is mainly relied on adjusting and controlling wellhead back pressure to control bottom hole pressure in real time during managed pressure drilling(MPD).The MPD wellhead back pressure computational model was established based on multiphase flow theory and principle of MPD,and computed using finite difference method.The variations of wellhead back pressure in MPD were analyzed by simulation examples.Factors impacting the wellhead back pressure were studied,including increment of return drilling fluid,gas p... |
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| Keywords: | managed pressure drilling gas cut back pressure multiphase flow discharge capacity permeability drilling fluid density drilling fluid viscosity |
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