| 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,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： | 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： | 2012/8/8 0:00:00 |
| 修稿时间： | 2012/8/8 0:00:00 |
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(Drilling & 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 and ZHANG Tao |
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| Institution: | 2 ( 1. Beijing Institute of Ex- ploration Engineering, Beijing 100083, China; 2. Chengdu University of Technology, Chengdu Sichuan 610059, China) |
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| Abstract: | The geological conditions were extremely complicated with poor wall stability in WFSD - 2 hole drilling construc- tion of Wenchuan earthquake fault scientific drilling project. Due to the water-sensltive formation of mineral water swelling, broken strata and stress release, the hole wall necking, collapsing and leakage happened many times. Through the adjust- ment and maintenance of the formulation, parameters, and solid control, LBM - GLA drilling fluid system with a low vis- cosity 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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