首页|推靠式旋转导向系统钻具组合力学性能分析

推靠式旋转导向系统钻具组合力学性能分析

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针对基于动力学特性的旋转导向钻具安全性能研究较少.为此,综合考虑钻具结构、钻井参数、钻柱与井壁接触等参数,基于Lagrange方程建立了全井钻柱系统动力学模型,采用有限单元法对模型离散,并采用Newmark-β求解,根据旋转导向钻具结构和钻具属性,研究了扶正器安装位置、柔性节尺寸、钻压影响因素下的旋转导向钻具组合动力学特性和安全性能.研究结果显示:安装扶正器能显著降低旋转导向钻具组合的横向振动;柔性节的长度对旋转导向钻具组合的安全性能影响很大,合理的长度能显著降低横向振动,反之则会起到相反的效果;增加钻压会增加底部钻具组合的横向位移,工程上不建议在使用旋转导向工具时采用高钻压提高钻井速度.研究结论可为旋转导向工具研究和应用提供理论支撑.
Mechanical Property Analysis of Bottomhole Assembly with Decentralized Rotary Steering System
There is less research on the safety performance of rotary steering drilling tool based on dynamic characteristics.Considering the structure of drill string,drilling parameters,and the contact between drill string and borehole wall and other parameters comprehensively,a dynamic model of the whole well drill string system was built based on the Lagrange equation.Then,the model was discretized using the finite element method and solved using Newmark-β.Finally,based on the structure and properties of the rotary steering drilling tool,the dynamic characteristics and safety performance of the rotary steering bottomhole assembly under the influential factors such as installation position of stabilizer,flexible joint size and WOB were studied.The study results show that installing a centralizer can significantly reduce the lateral vibration of the rotary steering bottomhole assembly.The length of the flexible joint has a significant impact on the safety performance of the rotary steering bottomhole assembly.A rea-sonable length can significantly reduce lateral vibration;otherwise,it will have an opposite effect.Increasing WOB would increase the lateral displacement of the bottomhole assembly,so it is not recommended in engineering to use high WOB to increase drilling speed when using rotary steering tools.The study conclusions provide theoreti-cal support for the research and application of rotary steering tools.

drilling toolrotary steeringdynamic characteristicsflexible jointcentralizerdrilling parameter

何俊杰、毛良杰、杨森、秦才会、赵清阳、魏祥高

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西南石油大学机电工程学院

西南石油大学油气藏地质及开发工程国家重点实验室

西南油气田分公司开发事业部

中海油田服务股份有限公司

中国石油集团西部钻探工程有限公司吐哈钻井公司

中国石油集团西部钻探工程有限公司玉门钻井分公司

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钻具 旋转导向 动力学特性 柔性节 扶正器 钻井参数

国家自然科学基金国家重点研发计划国家重点研发计划四川省重点研发计划四川省重点研发计划中国石油-西南石油大学创新联合体科技合作项目

521740062022YFC28061022021YFC2800905-032022YFS04972022YFG01192020CX040204

2024

10.16082/j.cnki.issn.1001-4578.2024.04.006

石油机械
中国石油天然气集团公司装备制造分公司 中国石油学会石油工程专业委员会 江汉机械研究所 江汉石油管理局

石油机械

CSTPCD北大核心
影响因子：0.737
ISSN：1001-4578
年,卷(期)：2024.52(4)
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