油井管螺纹接头力学特性的研究进展

doi:10.12066/j.issn.1007-2861.2208

摘要/Abstract

摘要：

随着油藏埋深增加, 石油钻采条件日益苛刻,油井管柱受到的载荷工况(包括拉伸、压缩、弯曲、内压、外压以及温度等)愈来愈复杂,油井管(包括钻杆、油管、套管等)螺纹接头失效已成为各油田遇到的主要问题之一.开发连接强度和密封性能更优越的螺纹接头已备受重视.作为特殊螺纹接头开发的瓶颈问题之一,螺纹接头力学性能分析方法亟待攻关.在介绍油井管螺纹接头发展进程的基础上,从解析法、试验法和数值模拟方法 3 个方面阐述了油井管螺纹接头力学性能的研究进展,并对与之相关的试验方法、设备以及数值模拟方法进行了描述,明确了当前研究存在的不足, 提出了油井管螺纹接头力学性能的研究新方向.

关键词: 螺纹接头, 力学性能, 解析法, 试验法, 数值模拟

Abstract:

With the increase in reservoir depth, the drilling and production conditions under which oil and gas are processed are becoming increasingly severe. Complex loads, including huge tension, significant compression, considerable bending, high internal and external pressure, and high temperature, cause the frequent failure of oil country tubular goods (OCTG). Threaded connection failure is one of the main failures encountered in oil fields, and increasing attention has been paid to the development of threaded connections with improved strength and sealing performance. As one of the vital works in the development of premium threaded connections, the analysis methodology governing the mechanical properties of threaded connections needs to be solved urgently. In this paper, the research progress concerning the mechanical properties of threaded connections is described from the aspects of three methods: analytical, experimental, and numerical simulation. The mechanical properties, test methods, equipments, and numerical simulation methods of OCTG threaded connections are described. Based on the summary and analysis of the shortcomings of the current works, the new future research direction for threaded connections has been suggested.

Key words: threaded connections, mechanical properties, analytical method, experimental method, numerical simulation

中图分类号:

TE38

狄勤丰, 王楠, 陈锋, 王文昌, 牛新明, 张金成. 油井管螺纹接头力学特性的研究进展[J]. 上海大学学报(自然科学版), 2020, 26(2): 163-180.

DI Qinfeng, WANG Nan, CHEN Feng, WANG Wenchang, NIU Xinming, ZHANG Jincheng. Research progress on the mechanical properties of threaded connections for oil country tubular goods[J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(2): 163-180.

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