| 河南省寺家沟银多金属矿区复杂地层绳索取心钻进技术 |
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| 引用本文： | 时志兴.河南省寺家沟银多金属矿区复杂地层绳索取心钻进技术[J].探矿工程,2019,46(3):31-35,41. |
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| 作者姓名： | 时志兴 |
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| 作者单位： | 河南省有色金属地质矿产局第一地质大队 |
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| 摘 要： | 河南省陕县崤山地区寺家沟-宽平一带银多金属矿区ZKS001孔，设计孔深900 m，直孔。上部地层坚硬破碎，裂隙发育，漏失严重，坍塌掉块，进尺缓慢，取心困难，钻进过程中钻头、钻杆磨损严重，造成多次钻杆断裂事故。钻孔位于山沟交汇处，严重涌水，从200～460 m，多处存在夹层泥，钻孔缩径。施工时由于钻进技术措施不当，导致钻进困难，引发事故，延误工期，增加了施工成本。本文介绍了该孔钻探施工技术措施，总结的经验教训可供类似工程参考借鉴。
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| 关 键 词： | 岩心破碎 钻孔漏失 涌水 钻杆断裂 优质冲洗液 |
| 收稿时间： | 2018/7/15 0:00:00 |
| 修稿时间： | 2019/1/16 0:00:00 |
Wireline core drilling in complex strata in Sijiagou silverpolymetallic mine of Henan Province |
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| SHI Zhixing.Wireline core drilling in complex strata in Sijiagou silverpolymetallic mine of Henan Province[J].Exploration Engineering(Drilling & Tunneling),2019,46(3):31-35,41. |
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| Authors: | SHI Zhixing |
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| Institution: | The First Geological Brigade of Henan Nonferrous Metals Geology and Mineral Resources Bureau |
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| Abstract: | This paper mainly introduces drilling of Hole ZKS001 in the silver polymetallic mine in the Sijiagou-Kuanping section, Xiaoshan District, Shan County, Henan. It is a straight hole with the design depth of 900m. The upper strata are hard, broken, with well developed fractures, serious leakage, and falling blocks. There were many difficulties in drilling in this zone such as low penetration rate, difficult coring, serious wear of drill bits, which resulted in drill pipe fractures many times during drilling. The drill hole is located at the intersection of the valley and gully with serious water gushing. Many mud interbedds are present between the borehole depth of 200m and 460m, which resulted in borehole diameter shrinkage. During drilling, due to improper handling of many drilling technical measures, drilling was difficult, and accidents often happened, delaying the construction period and increasing the construction cost, which should be taken as a lesson for future operations. |
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| Keywords: | core breakage leakage in drilling holes water gushing breaking of drill pipe high quality drilling fluid |
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