Xinjiang Oil & Gas ›› 2024, Vol. 20 ›› Issue (1): 31-37.DOI: 10.12388/j.issn.1673-2677.2024.01.004

• OIL AND GAS EXPLORATION • Previous Articles     Next Articles

Nonlinear Propagation and Influencing Factors of Perforation Detonation Waves in Ultra-Deep Wells

  

  1. 1. Beijing Huameishiji，International Technology Co.，Ltd.，Changping 102299，Beijing，China；

    2. China University of Petroleum （Beijing），Changping 102249，Beijing，China；

    3. Karamay Campus，China University of Petroleum （Beijing），Karamay 834000，Xinjiang，China；4. Beijing University of Technology，Chaoyang 100124，Beijing，China.

  • Online:2024-03-06 Published:2024-03-06

超深井射孔爆轰波非线性传播及影响因素

  

  1. 1.北京华美世纪国际技术有限公司，北京昌平  102299；

    2.中国石油大学（北京），北京昌平  102249；

    3.中国石油大学（北京）克拉玛依校区，新疆克拉玛依  834000；4.北京工业大学，北京朝阳  100124。

  • 通讯作者: 刘献博（1994-），2020年毕业于中国石油大学（北京）油气井工程专业，现为中国石油大学（北京）在读博士研究生，主要从事井筒完整性研究。（Tel）18810353852（Email）Liuxbpetroleum@163.com
  • 作者简介:刘怀亮（1986-），2012年毕业于中国石油大学（北京）油气井工程专业，工程师，主要从事油气完井领域基础科学与工具装备研究。（Tel）17778101770（Email）liuhuailiang@cnpc.com.cn
  • 基金资助:

    1、中国石油大学（北京）克拉玛依校区引进人才基金“页岩油气井全生命周期井筒完整性分析与优化体系构建”（XQZX20220019）；

    2、国家自然科学基金青年科学基金项目“页岩气井多级压裂诱发断层滑移量化计算模型与套管变形控制方法研究”（52204018）；

    3、国家自然科学基金联合基金集成项目“复杂环境下水泥环全生命周期密封理论与控制方法”（U22B6003）；

    4、国家自然科学基金联合基金重点支持项目“四川盆地深层超深层气井环空带压预防与管控基础研究”（U22A20164）；

    5、中国石油天然气集团有限公司科学研究与技术开发项目“200 ℃/105 MPa抗硫井下安全阀及封隔器研制”（2021ZG11）。

PDF (PC)

Abstract:

As oil and gas wells are gradually extended to deep and ultra-deep layers，the safety of completion strings during perforation has attracted more attention. Based on the principles of computational fluid dynamics，a perforated interval-packer detonation wave propagation model was established，revealing the detonation wave propagation and reflection rules in the wellbore completion fluid and clarifying the characteristics of the influence of completion fluid on detonation wave propagation. Research shows that the detonation wave propagation process demonstrates extremely strong non-periodicity and irregularity. When the detonation wave propagates to the packer position，the amplitude of the detonation wave pressure is reduced by up to 75.65%. The detonation reflected waves show better periodicity，and the amplitude of the detonation pressure waves is reduced by 23.4% when it propagates to the perforated interval. The density of the completion fluid not only has a great influence on the amplitude of the detonation waves during propagation，but also has a great interference on the waveform characteristics of the detonation waves. The viscosity of the completion fluid has almost no impact on the waveform characteristics of the detonation waves during propagation，and has a small impact on the amplitude of the detonation waves. With the impact of detonation waves on the completion string considered only，priority should be given to selecting a completion fluid system with low density and high viscosity to reduce the impact of detonation waves on the downhole completion string. The research results of this article provide a reference for the design of on-site completion fluid parameters for oil and gas wells.

Key words:

perforation, detonation waves, completion string, completion fluid, wave characteristic, deep and ultra-deep well

摘要：

随着油气井逐渐走向深井、超深井，射孔中完井管柱安全问题越来受到关注。基于计算流体力学原理，建立了射孔段-封隔器爆轰波传播模型，揭示了井筒完井液中爆轰波传播、反射规律，明确了完井液对爆轰波传播的影响特征。研究表明，爆轰波传播过程中表现出极强的非周期性、不规则性，传播至封隔器位置时爆轰波压力幅值降低高达75.65%，而爆轰反射波具有较好的周期性，传播至射孔段时的爆轰压力波幅值降低23.4%。完井液密度不仅对传播过程中爆轰波的幅值造成较大影响，对爆轰波波形特征也产生较大的干扰。完井液黏度对传播过程中爆轰波波形特征几乎没有影响，对爆轰波幅值有较小的影响。仅考虑爆轰波对完井管柱的影响时，应优先选择密度小、黏度大的完井液体系以降低爆轰波对井下完井管柱的冲击影响。研究结果为油气井现场完井液参数设计提供参考依据。

关键词:

射孔, 爆轰波, 完井管柱, 完井液, 波动特性, 深井超深井

CLC Number: 

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