石油学报 ›› 2019, Vol. 40 ›› Issue (2): 224-231.DOI: 10.7623/syxb201902011

• 石油工程 • 上一篇    下一篇

基于旋冲螺杆提速器的井下动力特性

田家林1, 杨应林1, 朱志1, 刘强2, 肖新启2, 张金龙2, 李居瑞1   

  1. 1. 西南石油大学机电工程学院石油天然气装备教育部重点实验室 四川成都 610500;
    2. 中石化江钻石油机械有限公司 湖北武汉 430223
  • 收稿日期:2018-04-03 修回日期:2018-12-24 出版日期:2019-02-25 发布日期:2019-03-05
  • 通讯作者: 田家林,男,1979年2月生,2001年获西南石油学院机械工程专业学士学位,2009年获西南石油大学机械工程专业博士学位,现为西南石油大学教授、博士生导师,主要从事机械动力学与控制、井下工具、能源装备研究工作。Email:tianjialin001@gmail.com
  • 作者简介:田家林,男,1979年2月生,2001年获西南石油学院机械工程专业学士学位,2009年获西南石油大学机械工程专业博士学位,现为西南石油大学教授、博士生导师,主要从事机械动力学与控制、井下工具、能源装备研究工作。Email:tianjialin001@gmail.com
  • 基金资助:

    石油天然气装备教育部重点实验室基金项目(OGE201701-02);国家留学基金项目(201608515039);国家自然科学基金(No.51674216)和国家科技重大专项"大型油气田及煤层气开发"(2016ZX05038)资助

Downhole dynamic characteristics of an actuator based on rotary screw

Tian Jialin1, Yang Yinglin1, Zhu Zhi1, Liu Qiang2, Xiao Xinqi2, Zhang Jinlong2, Li Jurui1   

  1. 1. School of Mechanical Engineering, Southwest Petroleum University, Sichuan Chengdu 610500, China;
    Key Laboratory for Oil and Gas Equipment of the Minstry of Education, Sichuan Chengdu 610500, China;
    2. Kingdream Petroleum Machinery Co., Ltd., Sinopec, Hubei Wuhan 430223, China
  • Received:2018-04-03 Revised:2018-12-24 Online:2019-02-25 Published:2019-03-05

摘要:

随着钻井深度的不断增加,在地层围压作用下岩石的硬度和强度均会明显增加,导致钻头破岩效率不高、寿命降低、钻井速度大幅下降等问题。基于旋冲螺杆原理设计了一种提速器,通过对提速器工作过程的力学分析,并结合钻具设计参数、工况参数以及相关力学计算方法,建立该提速器井下动力学模型,得到不同节点处的振动位移、振动速度以及系统的振动频谱图。通过实验研究,对比分析了冲击频率、冲击力测试结果与相关理论计算结果,验证相关理论计算与模型的正确性;并进行工具下井实验,根据现场实验数据及使用效果分析,验证了该提速器能够有效提高机械钻速。

关键词: 旋转钻井, 井下工具, 振动, 动力学, 机械钻速

Abstract:

With the increase of drilling depth, the hardness and strength of rocks are obviously increased under confining pressure of the formation, thus leading to a series of problems such as low rock-breaking efficiency, low life of bit and a drastic decrease of drilling speed. To solve these problems, a new-type actuator based on rotary screw is proposed in this study. Based on analyzing the mechanical relationship in the working process of new-type actuator as well as the design parameters of drilling tool, the working condition parameters and the related mechanics calculation method, the downhole dynamics analysis model of actuator is established to obtain the vibration displacement, vibration velocity at different nodes and the system vibration spectrum. According to the laboratory study of this tool, a comparative analysis has been conducted on the research results, including the test and theoretical calculation results of vibration frequency and impact, so as to verify the relevant theoretical calculation results and models. Furthermore, this study also carries out field tests of the tool; Using the field data and results, it is confirmed that this tool can improve the drilling efficiency effectively.

Key words: rotary drilling, downhole tool, vibration, dynamics, mechanical drilling rate

中图分类号: