横向振动对水平井眼中钻柱摩阻的影响研究

The Impact of Lateral Vibration on Friction of Drill String in Horizontal Wells

张会增 管志川 柯珂 窦玉玲

Zhang Huizeng Guan Zhichuan Ke Ke Dou Yuling

中国石油大学(华东)石油工程学院, 山东青岛 266580; 中国石化石油工程技术研究院, 北京 100101; 中石化胜利石油工程有限公司钻井工艺研究院, 山东东营 257017

School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao, Shandong, 266580, China; Sinopec Research Institute of Petroleum Engineering, Beijing, 100101, China; Drilling Technology Research Institute, Sinopec Shengli Oilfield Service Corporation, Dongying, Shandong, 257017, China

激振力的幅值和频率是影响横向振动类减摩阻工具性能的主要参数,利用自行研制的旋转激励载荷作用下摩擦力测试试验装置,研究了激振力的幅值和频率对钢-石板平面摩擦副摩擦系数的影响规律.试验结果发现,在激振频率为5,10和20 Hz条件下,与未施加激振力时的摩擦系数相比,当激振力增加到34.2 N时,钢-石板平面摩擦副的摩擦系数分别减小21.6%,29.0%及34.4%;在激振力为11.4,22.8和34.2 N条件下,与未施加激振力时的摩擦系数相比,当激振频率增加到30 Hz时,钢-石板平面摩擦副的摩擦系数分别减小22.8%、27.4%及39.0%.研究结果表明:在相同激振频率下,钢-石板平面摩擦副的摩擦系数与激振力幅值呈线性负相关;在相同激振力幅值下,钢-石板平面摩擦副的摩擦系数与激振频率呈对数负相关.

The amplitude and frequency of the exciting force are main factors which impact on performance of the lateral vibrating friction-reducing tools. Through measuring friction under the load of rotary exciting force with the self-developed testing unit, the impact of amplitude and frequency of the exciting force on the friction coefficient of plane friction pairs between steel and rock plate was diagnosed. The results show that friction coefficients reduced by 21.6%, 29.0% and 34.4% respectively when the exciting force increased from zero to 34.2 N at the frequency of 5, 10 and 20 Hz, and by 22.8%, 27.4% and 39.0% respectively, when the exciting frequency increased from zero to 30 Hz at the exciting force of 11.4, 22.8 and 34.2 N respectively. The study indicates that the friction coefficient of plane friction pairs between steel and rock plate has a negative linear relationship with the amplitude of the exciting force at the same exciting frequency, and a negative logarithmic relationship with the exciting frequency at the same exciting force.

"十二五"国家科技重大专项"西部山前复杂地层安全快速钻井技术"(编号:2011ZX05021-001)、国家高技术研究发展计划(863计划)"海上大位移井钻完井关键技术开发与集成"(编号:2012AA091501)资助.

https://doi.org/10.11911/syztjs.201503012