| 对依兰煤田钻孔缩径挤夹钻具事故的认识 |
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| 引用本文： | 魏臣.对依兰煤田钻孔缩径挤夹钻具事故的认识[J].探矿工程,2007,34(10):29-31. |
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| 作者姓名： | 魏臣 |
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| 作者单位： | 黑龙江省煤田地质二0四勘探队,黑龙江七台河154600 |
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| 摘 要： | 针对依兰煤田钻探施工中出现的钻孔缩径挤夹钻具事故,提出产生事故的根本原因不是因岩层本身膨胀所致,而是由于某种岩层裂隙发育,渗透性良好,吸水性强,使钻孔孔壁泥皮迅速增厚所致,并提出预防事故的具体措施。
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| 关 键 词： | 依兰煤田 挤夹钻具事故 孔壁泥皮 |
| 修稿时间： | 2007/3/26 0:00:00 |
Analysis on Borehole Diameter Shortening and Drilfing Tool Jamming Accident in Yilan Coalfield |
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| WEI Chen.Analysis on Borehole Diameter Shortening and Drilfing Tool Jamming Accident in Yilan Coalfield[J].Exploration Engineering(Drilling & Tunneling),2007,34(10):29-31. |
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| Authors: | WEI Chen |
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| Institution: | No. 204 Team, Heilongjiang Coal Geolgycal Bureau, Qitaihe Heilongjiang 154600, China |
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| Abstract: | According to the borehole diameter shortening and drilling tool jamming accident in Yilan, the basic reason was thought to be rapidly - thickening mud cake on the wall of borehole in crack development in some rock stratum with high permeability and absorbency, but not to be rock expanding. Concrete measures for the accident prevention were put forward. |
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| Keywords: | Yilan coal field drilling tool jamming accident mud cake on the wall of borehole |
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