• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>SPE/IADC Middle East Drilling Technology Conference and Exhibition >Integrated ERW Drilling Technologies for Weakly Consolidated Sandstone and Mudstone Formations
【24h】

Integrated ERW Drilling Technologies for Weakly Consolidated Sandstone and Mudstone Formations

机译：用于弱综合砂岩和泥岩地层的集成ERW钻井技术

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

There are many challenges in drilling extended reach well (ERW) for weakly consolidated sandstone and mudstone formations in Bohai Offshore Oilfield. For weak consolidated sandstone formations, it is difficult to control well trajectory, keep wellbore stable and decrease mud loss. For mudstone formations, the challenges include friction between wellbore and drilling tools, hydrating and swelling. At the same time, the measured well depth is larger than 3000 m, and the angle hold are larger than 70 degree. Additionally, the faults and the stress anomaly increase mud loss or complicate ERW drilling. Consequently, sticking of drilling tools or casing, and well collapse occur in past well drilling process. In order to drill ERW successfully and safely in Bohai weakly consolidated sandstone and mudstone formations, integrated drilling technologies are introduced involving well trajectory design, drilling tool assembly, friction prediction and drilling parameters correction, adjustment of drilling mud, and casing floating and lubricating. The practical measures used include: (1) Different drilling technologies are employed in the deflecting section and hold angle section respectively; (2)Rotary steering-LWD tools are used in the second spud and the third spud; (3) Drilling parameters are corrected in-time according the real-time friction prediction result derived from drilling friction prediction; (4) Marine bentonite mud is used for layers over the oil formation to recover well cuttings rapidly and keep high drilling speed, and polymer enhance cation (PEC in short) drilling fluid are used while drill the oil formation to avoid sticking of drilling tools and protect formation; (5)Floating couplings and addition of lubricant are introduced in running protective casing to avoid sticking. Field testing show that above integrated ERW drilling technologies are practical for the sophisticated weakly consolidated sandstone and mudstone formations in Bohai Offshore Oilfield, and the drilling efficiency is significantly increased. The engineering design of the integrated ERW drilling technologies and field drilling cases are presented in this paper.
机译：在渤海海上油田的弱综合砂岩和泥岩地层钻探延伸井（ERW）存在许多挑战。对于弱综合砂岩地层，难以控制井展井，保持井筒稳定并降低泥浆损失。对于泥岩地层，挑战包括井筒和钻井工具之间的摩擦，水合和肿胀。同时，测量的井深度大于3000米，角度保持大于70度。此外，断层和应力异常增加泥浆损失或复杂的ERW钻井。因此，过去的钻井过程中发生了钻孔工具或套管，并且发生良好的塌陷。为了在渤海弱综合砂岩和泥岩地层中成功钻探ERW，涉及综合钻井技术涉及井轨道设计，钻孔工具组件，摩擦预测和钻孔参数校正，调整钻井泥土，浮动浮动和润滑。所使用的实际措施包括：（1）不同的钻井技术分别用于偏转部分和保持角截面; （2）旋转转向LWD工具用于第二次SPUD和第三孔; （3）根据钻孔摩擦预测的实时摩擦预测结果，钻井参数随时校正; （4）船舶膨润土泥浆用于油形成上的层，迅速恢复井切割，并保持高钻孔速度，并且聚合物增强阳离子（短路）钻井液，同时钻出油形成，以避免钻探工具保护地层; （5）浮动联轴器和加入润滑剂在运行防护套管中引入以避免粘附。现场检测表明，上述ERW钻探技术实用，对于渤海海上油田的复杂弱巩固的砂岩和泥岩地层是实用的，钻井效率显着增加。本文介绍了集成ERW钻井技术和现场钻井箱的工程设计。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号