| 集贤东辉煤田松散地层防塌及堵漏技术 |
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| 引用本文： | 刘喜奇,王萍,王立君,刘志峰,沈萍.集贤东辉煤田松散地层防塌及堵漏技术[J].中国煤炭地质,2009(5):78-79. |
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| 作者姓名： | 刘喜奇 王萍 王立君 刘志峰 沈萍 |
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| 作者单位： | 东北煤田地质局一五五勘探队,辽宁锦州121000 |
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| 摘 要： | 勘查区第四系松散层以流沙为主,最厚达344m,坍塌漏失严重,给钻探施工造成巨大困难。根据不同的漏失量,选用不同的泥浆配方;严格控制钻压,计算确定合适的钻铤长度,使钻压不超过钻铤质量的2/3;采取防斜保直,套管护壁等一系列技术措施,取得了1a内在该区施工45个钻孔,成孔率100%的佳绩。
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| 关 键 词： | 流沙 坍塌 漏失 技术对策 集贤东辉煤田 |
Loose Bed Collapse Prevention and Leak Plugging Techniques Used in Donghui Coalfield,Jixian |
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| Liu Xiqi,Wang Ping,Wang Lijun,Liu Zhifeng and Shen Ping.Loose Bed Collapse Prevention and Leak Plugging Techniques Used in Donghui Coalfield,Jixian[J].Coal Geology of China,2009(5):78-79. |
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| Authors: | Liu Xiqi Wang Ping Wang Lijun Liu Zhifeng and Shen Ping |
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| Institution: | (No. 155 Exploration Team, Northeast China Bureau of Coal Geological Exploration, Jinzhou, Liaoning 121000) |
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| Abstract: | Quaternary loose beds in the exploration area are mainly quicksand, maximum thickness 344m, serious collapsing and leaking make drilling in the area extremely difficult. According to different leakage, different mud formulae are used; bit pressure is strictly controlled, computed well judged drill collar length makes bit pressure not more than 2/3 of collar mass; a series of technical measures such as borehole deflection prevention, wall casing etc. are adopted, thus good results of total 45 boreholes have drilled in one year, drilling success rate 100% have achieved. |
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| Keywords: | quicksaud collapse leak technical countermeasures Donghui coalfield Jixian |
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