轴扭复合冲击工具的研制与应用 |
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引用本文: | 刘书斌,倪红坚,张恒.轴扭复合冲击工具的研制与应用[J].石油钻探技术,2020,48(5):69-76. |
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作者姓名: | 刘书斌 倪红坚 张恒 |
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作者单位: | 1.中国石油大学(华东)石油工程学院,山东青岛 266580 |
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基金项目: | 国家自然科学基金青年基金项目“水平井钻柱仿蚯蚓振/蠕动载荷传递及控制机理研究”(编号:51704323)资助 |
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摘 要: | 为提高PDC钻头破岩效率并减小钻具的粘滑振动,研制了一种轴扭复合冲击工具。该工具以自激振荡脉冲射流为能量来源,通过螺旋面结构将轴向冲击力转换为轴扭复合冲击力进行破岩,具有结构简单和轴向、扭向冲击力同步作用的特点。现场应用结果表明:与常规钻具相比,轴扭复合冲击工具的机械钻速提高了95.2%~193.8%,单只钻头进尺增加了46.4%~229.2%;与螺杆钻具相比,轴扭复合冲击工具的机械钻速提高了71.0%;与轴向冲击工具相比,轴扭复合冲击工具的机械钻速提高了66.3%,单只钻头进尺增加了194.0%;与扭向冲击工具相比,轴扭复合冲击工具的机械钻速提高了30.2%~46.8%,单只钻头进尺增加了17.2%~191.8%。研究表明,轴扭复合冲击工具可以提高破岩效率,减小硬地层的粘滑振动,破岩提速效果显著,具有推广应用价值。
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关 键 词: | 冲击工具 复合冲击力 破岩效率 粘滑振动 PDC钻头 机械钻速 钻头进尺 |
收稿时间: | 2019-11-30 |
Development and Applications of a Compound Axial and Torsional Impact Drilling Tool |
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Affiliation: | 1.School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, 266580, China2.Key Laboratory of Ministry of Education for Unconventional Oil & Gas Development(China University of Petroleum (East China)), Qingdao, Shandong, 266580, China |
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Abstract: | To improve the rock-breaking efficiency of PDC bits and reduce stick-slip vibration, a compound axial and torsional impact tool was developed. This tool, characterized by a simple structure and the synchronous action of axial and torsional impacts, is used to break rocks. To do so, it used a self-excited oscillation pulse jet as its energy source, and converted axial impact force into compound axial and torsional impacts through helical surface structure. Field applications showed that: compared with conventional drilling tools, the ROP of this compound axial and torsional impact tool was increased by 95.2%–193.8%, and the footage of a single bit was increased by 46.4%–229.2%. Compared with PDM drills, the ROP of this tool was increased by 71.0% while compared with axial impact tools, the ROP of this tool was increased by 66.3%, and the footage of a single bit was increased by 194.0%. Compared with torsional impact tools, the ROP of this tool was increased by 30.2%–46.8%, and the footage of a single bit was increased by 17.2%–191.8%. The research results showed that the developed compound axial and torsional impact tool can improve rock-breaking efficiency and reduce the stick-slip vibration in hard formations. With its remarkable rock-breaking effects and ROP improvement, this tool is worth of application and widespread implementation. |
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