| MLH－Ⅱ钻井液在大井眼密闭取心中的应用 |
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| 引用本文： | 秦永宏,张家栋,宋雪艳.MLH－Ⅱ钻井液在大井眼密闭取心中的应用[J].石油钻探技术,1994(3). |
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| 作者姓名： | 秦永宏 张家栋 宋雪艳 |
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| 摘 要： | 介绍了大井眼密闭取心井高检１井所用ＭＬＨ－Ⅱ无机凝胶钻井液的特性、配方和性能。实践证明，这种钻井液具有独特的流变性和极强的剪切稀释能力，在０．１～０．３ｍ／ｓ极低环空返速下确保携岩和净化井眼要求，能有效抑制页岩失稳和抗污染，综合效益好。
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| 关 键 词： | 大井眼，高压密闭取心，无机凝胶钻井液，流变性，环空返速，高升油田 |
MLH-ⅡDrilling Flvid Used in Sealrd Coring in Large Hole |
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| Affiliation: | (Qin Yonghong and Song Xueyan. |
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| Abstract: | The property, ingredients and performance of MLH-Ⅱ drilling fluid with inorganic gel usedin coring well Gao Jian Well No. 1 are introduced, and the fluid proves to have unique rheologicalproperty, strong shear thinning capability, annular return velocity of 0.1-0. 3m/s can effectivelyinhibit shate from collapsing and resist contamination and overall benefit is good. |
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| Keywords: | large hole seated corinq with high pressure inorganic get drillinq fluid rheology annular relurn velcoily |
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