| 套管开窗侧钻技术在汶川地震断裂带科学钻探项目中的应用 |
| 投稿时间：2014-07-22 修订日期：2014-07-22 点此下载全文 |
| 引用本文：李前贵,樊腊生,吴金生,等.套管开窗侧钻技术在汶川地震断裂带科学钻探项目中的应用[J].钻探工程,2014,41(9):133-138.LI Qian-gui,FAN La-sheng,WU Jin-sheng,et al. Application of Casing Sidetracking Drilling Technology in Wenchuan Earthquake Fault Scientific Drilling Project[J]. Drilling Engineering, 2014,41(9):133-138. |
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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；中国地质调查局地调项目“定向钻进技术在西部地区大直径深孔钻探中的应用”（12120113097600）、“地震断裂带复杂地层钻探施工技术应用示范”（12120114075701） |
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| 中文摘要:汶川地震断裂带科学钻探工程钻遇地层非常复杂，地层破碎、膨胀缩径，坍塌、掉块严重，多次出现卡埋钻等事故，同时复杂地层取心率偏低。WFSD-2孔在取心率很低井段，为补取岩心运用套管开窗侧钻技术；而在WFSD-4孔施工中，套管内出现卡钻事故，为绕障采用套管开窗侧钻技术。介绍了复杂事故井套管开窗侧钻从准备到实施的工艺流程和技术措施。套管开窗侧钻的成功应用为后续工程实施节约了时间和成本，对今后类似作业具有很好的指导和借鉴作用。 |
| 中文关键词:汶川地震断裂带 科学钻探 套管开窗 侧钻 斜向器 铣锥 |
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| Application of Casing Sidetracking Drilling Technology in Wenchuan Earthquake Fault Scientific Drilling Project |
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| Abstract:During the drilling operation of Wenchuan earthquake fault science drilling project (WFSD), due to stratum breaking, borehole shrinkage and borehole walls' collapse, drilling accidents occurred frequently and core recovery has been low. In the borehole section of WFSD-2, where the core recovery was poor, sidetracking technology was used to get better core recovery and core quality. During the drilling of WFSD-4 hole, pipe stuck accidents occurred within the casing, casing sidetracking technology was used to by pass the obstacle in the hole. This article describes the casing sidetracking technology used in complex formations, referring to the technical measures adopted from preparation to implementation period. The successful application of sidetracking save project implementation time and cost, this will be good guidance and reference for future similar operations. |
| keywords:Wenchuan earthquake fault scientific drilling casing window sidetracking whip stock taper mill |
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