| 大直径反循环回转钻井底冲洗液流速的研究 |
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| 引用本文：赵大军,郑培根,徐龙献.大直径反循环回转钻井底冲洗液流速的研究[J].钻探工程,1997,(2):42-45.. Study on Fluid Velocity at The Hole Bottom in Large Diameter Reverse Circulation Rotary Drilling[J]. Drilling Engineering, 1997,(2):42-45. |
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| 赵大军 郑培根 徐龙献 |
| 长春科技大学!长春，130026，长春科技大学!长春，130026，长春科技大学!长春，130026 |
| 基金项目:地质行业基金!“大直径反循环回转钻井底流场和净化过程的研究”的子课题 |
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| 中文摘要:对大直径反循环平底钻头口转钻进井底冲洗液流速进行了研究，得出在模拟实验条件下，井底各点切向速度、径向速度及合速度的大小及钻头转速、冲洗液流量对井底流速的影响规律。 |
| 中文关键词:大直径回转钻进,冲洗液,井底流速,分速度计算 |
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| Study on Fluid Velocity at The Hole Bottom in Large Diameter Reverse Circulation Rotary Drilling |
| Zhao Dajun Zheng Peigen Xu Longxian |
| Changchun University of Earth Science Changchun 130026 |
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| Abstract:Through study on the fluid velocity at the hole bottom in large diameter reverse circulation rotary drilling with flat-bottom bits, the law that the tangential, radial and resultant velocities, and bit rotary speed and flowrate control the fluid velocity at the hole bottom are found out in the modelling condition. |
| keywords:large diameter rotary drilling, fluid, fluid velocity at the bottom hole, velocity component calculation, |
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