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| 汶川地震断裂带科学钻探项目取心钻进技术 | |
| 引用本文： | 王稳石,朱永宜,贾军,李前贵.汶川地震断裂带科学钻探项目取心钻进技术[J].探矿工程(岩土钻掘工程),2012,39(9):28-31,38. |
| 作者姓名： | 王稳石 朱永宜 贾军 李前贵 |
| 作者单位： | 1. 中国地质科学院勘探技术研究所,河北廊坊065000 2. 北京探矿工程研究所,北京100083 3. 中国地质科学院探矿工艺研究所,四川成都611743 |
| 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 |
| 摘 要： | 汶川地震断裂带科学钻探(WFSD)项目钻孔的主要目的之一是通过有效的技术手段,在极其破碎的地层中获取满足地学要求的原状岩心。通过在WFSD-2、WFSD-3两个钻孔采取隔液取心钻进、尖齿PDC小钻压取心钻进、孔底动力取心钻进、半合管无损出心等关键技术,高质量地达到了工程的取心要求,并有效地提高了难钻进、易堵心地层机械钻速和回次进尺。 |
| 关 键 词： | 汶川地震 地震断裂带 科学钻探 复杂地层 破碎地层 取心钻进 |
| 收稿时间： | 8/8/2012 12:00:00 AM |
| 修稿时间： | 8/8/2012 12:00:00 AM |
Coring Drilling Technology in Wenchuan Earthquake Fault Scientific Drilling Project |
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| WANG Wen-shi,ZHU Yong-yi,JIA Jun and LI Qian-gui.Coring Drilling Technology in Wenchuan Earthquake Fault Scientific Drilling Project[J].Exploration Engineering:Rock & Soil Drilling and Tunneling,2012,39(9):28-31,38. | |
| Authors: | WANG Wen-shi ZHU Yong-yi JIA Jun and LI Qian-gui |
| Affiliation: | The Institute of Exploration Technology, CAGS,The Institute of Exploration Techniques, CAGS,Beijing Institute of Exploration Engineering,The Institute of Exploration Technology, CAGS |
| Abstract: | Wenchuan earthquake's Fracture Scientific Drilling (WFSD) was carrying out in the serious broken formation, one of the purposes is obtaining original cores to meet the geosciences requirements. Technologies of isolated fluid coring drilling, polycrystalline diamond compact (PDC) with sharp teeth and low drilling weight coring drilling, bottom hole power coring drilling and split barrel undamaged coring were applied in WFSD-2 and WFSD-3. The results indicated that the rate of drilling speed and roundtrip footage were improved in the serious broken formation. What's even more important was that the high-quality original cores had been obtained by these improved drilling technologies. |
| Keywords: | Wenchuan earthquake earthquake fault scientific drilling complex formation broken formation coring drilling |
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