| ZYXC-244机械式旋冲螺杆钻具的研制与应用 |
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| 引用本文： | 甘心.ZYXC-244机械式旋冲螺杆钻具的研制与应用[J].吉林大学学报(地球科学版),2021,51(3):825-832. |
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| 作者姓名： | 甘心 |
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| 作者单位： | 中石化中原石油工程有限公司钻井工程技术研究院, 河南 濮阳 457001 |
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| 基金项目： | 中石化中原石油工程有限公司科研项目（2017108） |
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| 摘 要： | 针对现有常规螺杆钻具在研磨性强、可钻性差的难钻地层中存在破岩能量不足、机械钻速低、钻头消耗量大的问题，引入旋冲钻井破岩理念及轴向机械冲击破岩功能，研制了集合旁通阀总成、动力总成、传动总成和冲击总成于一体的ZYXC-244机械式旋冲螺杆（新型螺杆），并创新设计了防掉功能。通过对新型螺杆主要性能参数计算模型的分析，获取了其主要性能参数的特征变化曲线。新型螺杆先后在足203H1-3井和大湾4011-2井的须家河组等地层进行了现场应用，应用效果表明，新型螺杆进尺分别为685.00 m和72.53 m时与常规螺杆相比，机械钻速分别提高了38.2%和31.5%，节省了起下钻2次和2只钻头消耗，为难钻地层的提速提效提供了有效的技术手段。
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| 关 键 词： | 旋冲钻井 螺杆钻具 凸轮机构 防掉功能 冲击功 冲击频率 |
| 收稿时间： | 2019-12-30 |
Development and Application of ZYXC-244 Mechanical Rotary-Percussive Tool Based on Screw Drill |
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| Gan Xin.Development and Application of ZYXC-244 Mechanical Rotary-Percussive Tool Based on Screw Drill[J].Journal of Jilin Unviersity:Earth Science Edition,2021,51(3):825-832. |
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| Authors: | Gan Xin |
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| Institution: | Drilling Engineering and Technology Research Institute, Zhongyuan Petroleum Engineering Co. Ltd, SINOPEC, Puyang 457001, Henan, China |
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| Abstract: | Aiming at the problems of insufficient rock-breaking energy, low rate of penetration, and consumption of large number of bits when using a conventional screw drill in difficult-to-drill formations with strong abrasiveness and poor drilling ability, the concept of rotary-percussive drilling and the function of axial mechanical impact were introduced. Based on screw drill integrating bypass valve assembly, power assembly, transmission assembly, and impact assembly, the ZYXC-244 mechanical rotary-percussive tool was developed, and the function of fall prevention was also innovatively designed for the purpose of improving its reliability. Through analyzing the calculation model of the main performance parameters, the characteristic curve of the main performance parameters was obtained. Finally, the ZYXC-244 mechanical rotary-percussive tool based on screw drill was successively applied to Well Z203H1-3 and Well D4011-2 of Xujiahe Formation. When the drilling depth of the new type screw drill was 685.00 m and 72.53 m, the rate of penetration was improved by 38.2% and 31.5%, respectively, and two trips and two bits were saved, compared to those of the conventional screw drill. Through this research, an effective technical tool is provided for difficult-to-drill formations. |
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| Keywords: | rotary-percussive drilling screw drill cam mechanism fall prevention function impact energy impact frequency |
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