High-temperature and high-pressure wells are facing a lot of problems such as complicated stress on the production string, severe deformation, and annular pressure, which seriously restrict the pace of drilling and development of HPHT oil and gas resources in China. In this paper, theoretical analysis and software calculation are combined to study the stress and deformation of an HTHP well string. Based on the research results, the authors have established an algorithm and method of mechanical analysis for high-temperature and high-pressure wells. The method could be effectively applied to drill string analysis in high-temperature and high-pressure well conditions. Lastly, the developed method of analysis and calculation algorythm has been verified for the actual production conditions. Based on the proposed calculation method, we have evaluated the force, deformation, and trap pressure values of the drilling string and packer under different working conditions. The results can be used to assess the safety of field operations. In this paper we provide the algorithm and method for production string analysis in HTHP wells.

中文翻译：

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高温高压井生产管柱的力学行为

高温高压井面临着生产管柱受力复杂、变形剧烈、环空受压等诸多问题，严重制约了我国高温高压油气资源的钻探和开发步伐。本文将理论分析和软件计算相结合，对高温高压井柱的应力变形进行研究。在此基础上，作者建立了高温高压井力学分析的算法和方法。该方法可有效应用于高温高压井况下的钻柱分析。最后，对所开发的分析计算算法方法进行了实际生产条件的验证。根据提出的计算方法，我们评估了钻柱和封隔器在不同工况下的受力、变形和圈闭压力值。结果可用于评估现场作业的安全性。在本文中，我们提供了高温高压井生产管柱分析的算法和方法。