| 国际油气井钻头进展概述（一）——Kymera 组合式（Hybrid)钻头系列 |
| 投稿时间：2015-12-07 修订日期：2015-12-07 点此下载全文 |
| 引用本文：左汝强.国际油气井钻头进展概述（一）——Kymera 组合式（Hybrid)钻头系列[J].钻探工程,2016,43(1):4-6.ZUO Ru-qiang. International Advancement of Drilling Bits for Oil and Gas Well (1)—Kymera Hybrid Bit[J]. Drilling Engineering, 2016,43(1):4-6. |
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| 中文摘要:针对油气钻井中钻遇坚硬地层、粘-滑（stick-slip)地层、软硬互层与含夹层地层，以及定向井、水平井等钻进中PDC钻头钻进效率、钻井方向控制方面的局限性问题，贝克· 休斯公司克里斯坦森（Baker Hughes Christensen )分公司于2011年四季度向国际市场推出了将金刚石复合片与牙轮相结合的钻头——Kymera组合式钻头。该新型钻头藉助于牙轮在硬岩层中的侵入能力，提高碎岩效率，改善PDC的冷却，还能明显降低钻头在井底的扭矩，提高钻井方向的控制能力。在世界各地现场实际应用取得了良好的钻井效果。介绍了Kymera组合式钻头的研发背景和历程，以及其在世界多地油气钻井中的现场应用情况。 |
| 中文关键词:油气钻井 页岩气 PDC钻头：牙轮钻头：组合钻头 |
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| International Advancement of Drilling Bits for Oil and Gas Well (1)—Kymera Hybrid Bit |
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| Abstract:Baker Hughes commercially launched a new hybrid bit, Kymera bit, which combines features of a PDC and roller cone bit in Q4 2011. Kymera bit is especially suitable for difficult-to-drill formation, such as hard, stick-slip, hard-soft interbedded formations in shale plays, as well as for directional and horizontal well drilling. Kymera bit can increase ROP with roller cone’s ingressive capability in hard formation, improve PDC cooling condition, decrease torque fluctuation obviously, and also control well trajectory effectively. Kymera bit has been successful in oil and gas field applications in many counties. The development background of Kymera bit and case studies are given. |
| keywords:oil and gas drilling shale gas PDC bit roller cone bit hybrid bit |
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