海洋工程装备与技术

海洋工程装备与技术 ›› 2015, Vol. 2 ›› Issue (2): 99-104.

• 海洋油气勘探开发技术与装备 • 上一篇    下一篇

海洋钻井用双向减震器的失效机理与应对措施研究

田家林1,2, 付传红1, 董明键3, 刘正连4, 龙小康5, 方剑5, 吴纯明1   

  1. 1. 西南石油大学机电工程学院,四川 成都 610500
    2. 西南交通大学机械工程学院,四川 成都 610031
    3. 中石化胜利石油工程有限公司西南分公司,四川 德阳 618000
    4. 川庆钻探工程公司钻采工程技术研究院,四川 广汉 618300
    5. 中国石油西南油气田公司,四川 成都 610051
  • 收稿日期:2015-03-24 出版日期:2015-04-10 发布日期:2016-03-30
  • 作者简介:

    作者简介:田家林(1979--)男,博士,副教授,主要从事机械振动,井下工具,钻井动力学等方面的研究.

  • 基金资助:
    石油天然气装备教育部重点实验室开放课题(OGE201403-05),国家自然科学基金(51074202,11102173),四川省教育厅成果转化重大培育项目(12ZZ003,No.667)

Study on Failure Mechanism and Countermeasures of Two-Way Shock Absorber in Ocean Drilling

Jia-lin TIAN1,2, Chuan-hong FU1, Ming-jian DONG3, Zheng-lian LIU4, Xiao-kang LONG5, Jian FANG5, Chun-ming WU1   

  1. 1. School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
    2. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
    3. Sinopec Shengli Petroleum Engineering Co., Ltd. Southwest Branch, Deyang, Sichuan 618000, China
    4. CCDC Drilling &Production Engineering Technology Research Institute, Guanghan, Sichuan 618300, China
    5. Southwest Oil & Gas Field Company, CNPC, Chengdu, Sichuan 610051, China
  • Received:2015-03-24 Online:2015-04-10 Published:2016-03-30

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摘要：

针对海洋油气井钻井现场对双向减震器研究的缺陷与不足,以及在使用过程中出现非正常失效等问题,根据双向减震器的结构原理以及现场使用情况对其进行失效机理的研究.在此基础上,制定出一系列操作性强的解决措施.结果表明:密封失效,螺纹损坏,心轴与外筒脱落,九头螺纹设计缺陷等问题是双向减震器失效的主要原因,控制人为损坏,预防密封失效,加强各岗位检查,改进九头螺纹结构等方法是解决双向减震器失效问题的重要措施.该研究结论可以有效降低减震器的失效风险,减少故障发生几率,有利于生产提速和钻井安全.

关键词: 海洋油气井, 钻井工具, 双向减震器, 失效分析

Abstract:

In view of the deficiencies in the study of two-way shock absorber in marine oil and gas drilling and its abnormal failure, the failure mechanism is analyzed based on the structural principle of two-way shock absorber and field use. On the basis of the analysis, a series of feasible measures are established. The results show that the main causes leading to two-way shock absorber's failure include seal failure, thread failure, loosening between spindle and outer cylinder, and the design defects of nine-thread. Accordingly, avoiding artificial damage, preventing seal failure, strengthening supervision of all positions and improving the nine-thread structure are reasonable choices to avoid shock absorber failure. The conclusions are helpful to effectively reduce the risk of shock absorber failure and the failure probability, which are of great significance to improving production speed and drilling safety.

Key words: marine oil and gas well, drilling tool, two-way shock absorber, failure analysis

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