泥浆帽控制压力钻井水力模型研究(郝希宁; 汪志明 )

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泥浆帽控制压力钻井水力模型研究水利论文1j#AZ(K8[2gQ,Q

C'B+[lj*`0【作者】郝希宁; 汪志明 【作者单位】中国石油大学(北京)石油天然气工程学院水利论文)P9p _2|%M4[!t

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【论文摘要】 基于流体力学理论,首次建立了泥浆帽控制压力钻井系统的水力模型,运用数值模拟的方法,对环空岩屑浓度和循环压耗的影响因素进行了分析,提出了牺牲流体排量、泥浆帽流体密度等参数的设计方法.研究表明:在保证井眼清洁的前提下应尽量减小牺牲流体的排量:泥浆帽流体的密度应略低于漏失层孔隙压力的当量密度.

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1g2~Z[`1N.R h0【英文论文摘要】 The Mud Cap Managed Pressure Drilling hydraulic model was formed for the first time on the basis of fluid mechanics.Numerical simulation was used to analyze the influence factors of annular cutting concentration and circulating pressure drop,the method of sacrifice fluid delivery rate and mud cap fluid density design was proposed.The research show that sacrifice fluid volume should be minimized on the basis of hole clean,the mud cap fluid density should be a little smaller than pore pressure of the lost circulation zone.水利论文Dg:L;n-Q-bi

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【论文关键词】 控制压力; 泥浆帽; 漏失; 水力模型水利论文F9ie @4HB5u6Anh
【英文论文关键词】 managed pressure; mud cap; lost circulation; hydraulic model
"q/otH H F0【基金】教育部创新团队研究项目(IRT0411)

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TAG: 水力 汪志明 钻井 泥浆 郝希宁
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