| 汶川地震断裂带科学钻探项目WFSD-2孔钻井液工艺研究 |
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| 引用本文： | 陶士先,陈礼仪,单文军,李之军,李晓东,张涛. 汶川地震断裂带科学钻探项目WFSD-2孔钻井液工艺研究[J]. 探矿工程(岩土钻掘工程), 2012, 39(9): 45-48 |
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| 作者姓名： | 陶士先 陈礼仪 单文军 李之军 李晓东 张涛 |
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| 作者单位： | 1. 北京探矿工程研究所,北京100083
2. 成都理工大学,四川成都610059 |
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| 基金项目： | 科技部科技支撑计划专项“汶川地震断裂带科学钻探（WFSD）”项目之“科学钻探与科学测井”课题 |
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| 摘 要： | 汶川地震断裂带科学钻探项目二号孔（WFSD-2），地质条件极为复杂，孔壁稳定性差。施工期间由于地层中水敏性矿物吸水膨胀、地层破碎及地应力释放等原因，多次发生孔壁缩径、坍塌掉块及漏失现象。针对以上问题，施工中采用了以低粘增效粉和改性沥青为主要原料的LBM-GLA钻井液体系，通过对钻井液配方、性能参数的合理调整与维护以及固相等方面的控制与处理，较好地解决了上述问题。重点介绍了WFSD-2孔各孔段钻井液的使用及维护情况。
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| 关 键 词： | 汶川地震；地震断裂带；科学钻探；复杂地层；孔壁稳定；钻井液体系 |
| 收稿时间： | 2012-08-08 |
| 修稿时间： | 2012-08-08 |
Research on Drilling Fluid Technology for WFSD-2 Hole of Wenchuan Earthquake Fault Scientific Drilling Project |
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| TAO Shi-xian,CHEN Li-yi,SHAN Wen-jun,LI Zhi-jun,LI Xiao-dong and ZHANG Tao. Research on Drilling Fluid Technology for WFSD-2 Hole of Wenchuan Earthquake Fault Scientific Drilling Project[J]. Exploration Engineering （Rock & Soil Drilling and Tunneling）, 2012, 39(9): 45-48 |
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| Authors: | TAO Shi-xian CHEN Li-yi SHAN Wen-jun LI Zhi-jun LI Xiao-dong ZHANG Tao |
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| Affiliation: | Beijing Institute of Exploration Engineering,Chengdu University of Technology,Beijing Institute of Exploration Engineering,Chengdu University of Technology,Beijing Institute of Exploration Engineering,Chengdu University of Technology |
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| Abstract: | The geological conditions were extremely complicated with poor wall stability in WFSD-2 hole drilling construction of Wenchuan earthquake fault scientific drilling project. Due to the water-sensitive formation of mineral water swelling, broken strata and stress release, the hole wall necking, collapsing and leakage happened many times. Through the adjustment and maintenance of the formulation, parameters, and solid control, LBM-GLA drilling fluid system with a low viscosity synergy powder and modified asphalt as the main raw materials was adopted in the construction; the above problems were successfully solved. This article mainly describes the use and maintenance of drilling fluid in each section of WFSD-2 hole. |
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| Keywords: | Wenchuan earthquake earthquake fault scientific drilling complex formation hole wall stability drilling fluid system |
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