• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Pan-American conference on soil mechanics and geotechnical engineering >The analysis of rock cutting processes employing finite and discrete element methods
【24h】

The analysis of rock cutting processes employing finite and discrete element methods

机译：采用有限和离散元件的岩石切割工艺分析

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

摘要

The petroleum industry has shown great interest in the study of drilling optimization on pre-salt formations given the low rates of penetration observed so far. Rate of penetration is key to economically drill the Brazilian pre-salt carbonate rock. This work presents the results of numerical modeling through finite element method and discrete element method for single cutter drilling in carbonate rocks. The work is relevant to understand the mechanics of drill bit -rock interaction while drilling deep wells and the results were validated with experimental data obtained under simulated downhole conditions. The numerical models were carried out under different geometrical configurations, varying the cutter chamfer size and back-rake angles. The forces generated on the cutter are translated into mechanical specific energy as this parameter is often used to measure drilling efficiency. Results indicate that the chamfer size does not change significantly the mechanical specific energy values, although the cutter aggressiveness is influenced by this geometrical characteristic. Results also show there is a significant increase in drilling resistance for larger values of back-rake angle.
机译：鉴于到目前为止观察到的渗透率低，石油工业对钻井优化研究令人兴趣。渗透率是经济地钻巴西盐碳酸盐岩的关键。本作品通过有限元方法和分立元件方法提供了碳酸盐岩中的单刀具钻探的分立元件方法的数值模拟结果。该工作与了解钻头 - 钻头相互作用的机制，同时钻孔深井，并通过在模拟井下条件下获得的实验数据验证结果。数值模型在不同的几何配置下进行，改变切割倒角尺寸和背耙角度。当该参数通常用于测量钻井效率时，在切割器上产生的力被翻译成机械特定能量。结果表明，倒角尺寸不会显着改变机械特定能量值，尽管切割器的侵袭性受到这种几何特征的影响。结果还表明，钻孔阻力显着增加，对后耙角度的较大值。

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