The packer is one of the most important tools in deep-water perforation combined well testing, and its safety directly determines the success of perforation test operations. The study of dynamic perforating pressure on the packer is one of the key technical problems in the production of deep-water wells. However, there are few studies on the safety of packers with shock loads. In this article, the three-dimensional finite element models of downhole perforation have been established, and a series of numerical simulations are carried out by using orthogonal design. The relationship between the perforating peak pressure on the packer with the factors such as perforating charge quantity, wellbore pressure, perforating explosion volume, formation pressure, and elastic modulus is established. Meanwhile, the database is established based on the results of numerical simulation, and the calculation model of peak pressure on the packer during perforating is obtained by considering the reflection and transmission of shock waves on the packer. The results of this study have been applied in the field case of deep-water well, and the safety optimization program for deep-water downhole perforation safety has been put forward. This study provides important theoretical guidance for the safety of the packer during deep-water perforating.

中文翻译：

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深水射孔封隔器动压研究

封隔器是深水射孔结合井测试中最重要的工具之一，其安全性直接决定了射孔测试操作的成功。对封隔器动态射孔压力的研究是深水井生产中的关键技术问题之一。但是，很少有关于带有冲击载荷的封隔器安全性的研究。本文建立了井下射孔的三维有限元模型，并通过正交设计进行了一系列数值模拟。建立了封隔器上的射孔峰值压力与射孔装药量，井眼压力，射孔爆炸量，地层压力和弹性模量等因素之间的关系。同时，根据数值模拟结果建立数据库，并考虑冲击波在封隔器上的反射和透射，得到封隔器射孔时峰值压力的计算模型。研究结果已应用于深水井现场，并提出了深水井眼射孔安全性的安全优化方案。该研究为深水射孔过程中封隔器的安全性提供了重要的理论指导。提出了深水井眼射孔安全的安全优化方案。该研究为深水射孔过程中封隔器的安全性提供了重要的理论指导。提出了深水井眼射孔安全的安全优化方案。该研究为深水射孔过程中封隔器的安全性提供了重要的理论指导。