西南石油大学学报(自然科学版) ›› 2016, Vol. 38 ›› Issue (6): 172-178.DOI: 10.11885/j.issn.1674-5086.2015.10.27.21

• 石油机械工程 • 上一篇    

高压气井多封隔器完井管柱力学研究

张智1, 王波1, 李中2, 李炎军2, 张超2   

  1. 1. "油气藏地质及开发工程"国家重点实验室·西南石油大学, 四川 成都 610500;
    2. 中海石油(中国)有限公司湛江分公司, 广东 湛江 524057
  • 收稿日期:2015-10-27 出版日期:2016-12-01 发布日期:2016-12-01
  • 通讯作者: 张智,E-mail:wisezh@126.com
  • 作者简介:张智,1976年生,男,汉族,四川南充人,教授,博士生导师,主要从事油气井建井工程与安全教学与研究工作。E-mail:wisezh@126.com;王波,1988年生,男,汉族,山东东营人,硕士研究生,主要从事管柱力学、材料腐蚀与防腐等方面的研究。E-mail:wangbo0501@126.com;李中,1972年生,男,汉族,河南驻马店人,教授级高级工程师,主要从事钻井工程技术和管理工作。E-mail:lizhong@cnooc.com.cn;李炎军,1980年生,男,汉族,湖北孝感人,高级工程师,主要从事海上钻井作业的技术和管理。E-mail:liyanjun@cnooc.com.cn;张超,1981年生,男,汉族,四川巴中人,工程师,主要从事海上钻井研究工作。E-mail:zhangchao1@cnooc.com.cn
  • 基金资助:
    国家科技重大专项(2016ZX05028001-006,2016ZX05017-003);四川省科技厅项目(2016JQ0010);四川省省属高校科技创新团队建设计划(13TD0026)。

Mechanical Study of Completion String With Multi-packer for High Pressure Gas Wells

ZHANG Zhi1, WANG Bo1, LI Zhong2, LI Yanjun2, ZHANG Chao2   

  1. 1. State Key Laboratory of Oil & Gas Reservoirs Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. Zhanjiang Branch Co. Ltd., CNOOC, Zhanjiang, Guangdong 524057, China
  • Received:2015-10-27 Online:2016-12-01 Published:2016-12-01

摘要: 带多封隔器的完井管柱是Norsok D010规范推荐的高温高压气井完井管柱中的重要类型,但是多封隔器完井管柱结构在井下工况中的受力和变形较单一结构管柱更为复杂,并且多封隔器之间局部的圈闭压力可能导致管柱损坏。为此,针对多封隔器管柱结构特点,建立了考虑端面效应、热胀冷缩效应、形变效应、螺旋和正弦屈曲效应影响的管柱变形和受力计算模型,并结合现场实际工况开展了实例计算。计算结果表明,封隔器在井筒中的位置以及井筒温度压力对整个管柱的受力和变形影响较大,在多封隔器复合管柱设计和安全评价时需要考虑多封隔器对管柱力学行为的影响。

关键词: 封隔器, 力学研究, 完井管柱, 轴向变形, 高温高压气井

Abstract: The string with multi-packer, which is recommended by Norsok D010 standard, is an important type of high temperature high-pressure completion string. However, compared with the single packer, the force and deformation of completion string with multi-packer are more complicated, and the local trap pressure does great damage to pipe string. Therefore, the mechanical model with consideration of the end effect, deformation effect and effect of thermal expansion and contraction as well as helical and sinusoidal buckling effect was established. Besides, calculation based on field condition was performed. The results indicate that the force and deformation of string are greatly affected by the packer depth and wellhead temperature and pressure, and effect of multi-packer on mechanical behavior of string should be considered in the string design and evaluation.

Key words: packer, mechanical analysis, completion string, axial deformation, high temperature high-pressure gas well

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