Mechanical Analysis of a Multi-Test String in High-Temperature and High-Pressure Deep Wells

被引:0
|
作者
Tang, Zubing [1 ]
机构
[1] Sinopec Southwest Petr Engn Corp, Downhole Operat Branch, Deyang 618000, Peoples R China
来源
关键词
Test string; high temperature and high pressure; buckling; subdividing operation process; mechanical model; PREDICTION;
D O I
10.32604/fdmp.2023.026608
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The mechanical behavior of the test string in deep wells is generally relatively complex as a result of the high temperature and high pressure, severe dogleg and buckling effects, which in some circumstances can even lead to string failure. Traditional computational methods for the analysis of these behaviors are often inaccurate. For this reason, here a more accurate mechanical model of the test string is introduced by considering variables such as temperature, pressure, wellbore trajectory, and buckling, as well as combining them with the deformation and string constraint conditions brought in by changes in temperature and pressure during the tripping, setting, and test operations. The model is validated by applying it to a specific high-pressure gas well (located in Northeast Sichuan).
引用
收藏
页码:2161 / 2170
页数:10
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