超深井射孔爆轰波非线性传播及影响因素
Nonlinear Propagation and Influencing Factors of Perforation Detonation Waves in Ultra-Deep Wells
刘怀亮 1刘献博 2刘宇 1李军 3席岩 4连威5
作者信息
- 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),北京昌平 102249;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
- 5. 中国石油大学(北京)克拉玛依校区,新疆克拉玛依 834000
- 折叠
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.
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 ar-ticle provide a reference for the design of on-site completion fluid parameters for oil and gas wells.
关键词
射孔/爆轰波/完井管柱/完井液/波动特性/深井超深井Key words
perforation/detonation waves/completion string/completion fluid/wave characteristic/deep and ultra-deep well引用本文复制引用
基金项目
中国石油大学(北京)克拉玛依校区引进人才基金(XQZX20220019)
国家自然科学基金青年科学基金(52204018)
国家自然科学基金联合基金集成项目(U22B6003)
国家自然科学基金联合基金重点支持项目(U22A20164)
中国石油天然气集团有限公司科学研究与技术开发项目(2021ZG11)
出版年
2024
NETL
NSTL
万方数据