上海砂性软土地层水平定向钻进泥浆性能调控技术
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摘要
上海地区水平定向钻进铺管(HDD)钻遇不易成孔的砂性软土的概率甚高,这种地层对泥浆性能有特殊要求。但目前普遍使用的复配型增效商品土粉基调相近,难以就大量工程个案恰如其分地发挥关键功效。为此,论述了该类工程环境下泥浆性能设计要点,分析了材料添配的作用机理,重点给出了泥浆密度、粘度、切力以及失水量等参数调控的宜于实用的若干配材技术,以提供相类似工程条件下泥浆运用的可参考方法。
Most of the HDD projects in Shanghai area are conducted in sandy soft soil formations,and different special requirements of mud property should be taken into consideration.However,because of the similar property of the commonly used compound synergistic commercial bentonite,it is difficult to adjust the most favorable property in accordance with every single engineering case.Therefore,the main design points of drilling mud property in such engineering environments are discussed,the mechanism of material addition is analyzed and some useful and practical material technologies for parameters of mud density,viscosity and shear as well as water loss volume are given in order to provide a reference method for mud application under similar engineering conditions.
Most of the HDD projects in Shanghai area are conducted in sandy soft soil formations,and different special requirements of mud property should be taken into consideration.However,because of the similar property of the commonly used compound synergistic commercial bentonite,it is difficult to adjust the most favorable property in accordance with every single engineering case.Therefore,the main design points of drilling mud property in such engineering environments are discussed,the mechanism of material addition is analyzed and some useful and practical material technologies for parameters of mud density,viscosity and shear as well as water loss volume are given in order to provide a reference method for mud application under similar engineering conditions.
引文
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[5]张跃武.非开挖穿越工程中泥浆的选用与优化设计[J].非开挖技术,2009,26(6):27-31.
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[8]乌效鸣,蔡记华,胡郁乐.钻井液与岩土工程浆材[M].湖北武汉:中国地质大学出版社,2013:133-135.
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[2]张志刚.非开挖定向钻进铺设大直径燃气钢管工程实例[J].探矿工程(岩土钻掘工程),2005,32(12):33-34.
[3]钟红光.水平定向钻在短距离大口径钢管施工中的运用——真南路定向钻施工的经验与教训[J].上海煤气,2005,(5):5-7,37.
[4]张丕国.非开挖穿越麒麟立交桥全风化花岗岩地层铺设石油管道施工技术[J].探矿工程(岩土钻掘工程),2005,32(6):24-26.
[5]张跃武.非开挖穿越工程中泥浆的选用与优化设计[J].非开挖技术,2009,26(6):27-31.
[6]王果.非开挖施工中的泥浆问题分析[J].非开挖技术,2011,28(4):32-34.
[7]李斌,李巨龙,周玲玲.水平定向钻进铺管水平孔段软土孔壁稳定性分析[J].岩土工程技术,2005,(2):84-86.
[8]乌效鸣,蔡记华,胡郁乐.钻井液与岩土工程浆材[M].湖北武汉:中国地质大学出版社,2013:133-135.
[9]黄汉仁.液体聚合物在非开挖穿越工程中的应用[J].地质装备,2001,(2):16-18.
[10]乌效鸣,胡郁乐,李粮纲,等.导向钻进与非开挖铺管技术[M].湖北武汉:中国地质大学出版社,2004:7-13.