油气管道穿越钻杆质量控制的关键技术研究

发布时间：2018-05-28 19:39

本文选题：钻杆 + 管端加厚　；参考：《西安石油大学》2015年硕士论文

【摘要】：非开挖钻杆作为工程用坑道钻机的重要零部件之一,在油气长输管线的敷设中发挥着不可或缺的作为。随着施工难度和钻机吨位的增加,对所需用的钻杆质量的要求也大大提高,数据表明,钻杆的机械性能和生产钻杆的工艺有着密不可分的关系,因此,对钻杆质量控制的关键技术进行深入研究具有重要的理论和实践意义。本文以API Spec 5D《钻杆规范》为标准,分别以钻杆生产中的管端加厚、管体热处理、螺纹表面硬化处理以及摩擦焊接工艺作为研究对象,进行了如下的研究：(1)分三部分对钻杆管端加厚成形技术进行了研究,分别是：钻杆管端加厚的原理及研究现状、影响钻杆管端加厚成形的工艺因素分析、钻杆常见缺陷及原因。对钻杆管端加厚成形技术作了一个整体的理论分析。并以Φ127x9.19mm的钻杆IEU加厚方式为例,做了管端加厚工艺实现。结果显示：新工艺满足规范要求,经过加厚处理的钻杆合格。(2)从对钻杆进行热处理的目的和意义入手整体钻杆热处理参数优化的研究,对钢的热处理工艺进行了阐述,以及对钻杆进行热处理时的工艺参数予以研究确认,最后以26CrMnMo钻杆为例,对其具体的热处理过程在分析的基础上做以工艺实现。机械性能检验结果显示：经过热处理后的钻杆管端和管体硬度、耐磨性、抗疲劳性均合格。(3)利用激光表面硬化处理的方式,对钻杆的螺纹表面进行了淬火处理,并对处理后和经过传统液体氮化处理的同型号钻杆分别在表面硬度、淬火层深度、耐磨性、抗疲劳性等机械性能做了比较分析,结果显示：经过激光表面硬化处理的钻杆螺纹机械性能整体优于经过液体氮化处理的螺纹机械性能。从而得出此激光表面硬化处理方式在钻杆螺纹表面硬化处理的应用是成功的。(4)由于摩擦焊接技术已经广泛的应用于钻杆的生产制造,因此在这一章简要介绍了摩擦焊接工艺及其后续处理,并以其工艺为主要叙述点,具体介绍了工具接头和管端的焊前预处理,以及摩擦焊接的基本过程,并对焊接参数做了计算。
[Abstract]:As one of the important parts of engineering tunnel drilling rig, non-excavated drill pipe plays an indispensable role in the laying of oil and gas pipeline. With the increase of the construction difficulty and the tonnage of drilling rig, the requirement of drill pipe quality is greatly increased. The data show that the mechanical properties of drill pipe are closely related to the technology of producing drill pipe. It is of great theoretical and practical significance to study the key technology of drill pipe quality control. In this paper, API Spec 5D drill pipe specification is taken as the standard, the pipe end thickening, pipe body heat treatment, thread surface hardening treatment and friction welding process are taken as the research objects, respectively, in the production of drill pipe. In this paper, the following three parts are carried out to study the forming technology of drill pipe end thickening: the principle and research status of drill pipe end thickening, the analysis of technological factors affecting the drill pipe end thickening forming, the common defects and reasons of drill pipe end thickening. The forming technology of drill pipe end thickening is analyzed in this paper. Taking the IEU thickening method of 桅 127x9.19mm drill pipe as an example, the pipe end thickening process is made. The results show that the new technology meets the requirements of the specification, and the thickened drill pipe is qualified. The optimization of the heat treatment parameters of the whole drill pipe is studied based on the purpose and significance of the heat treatment of the drill pipe, and the heat treatment process of the steel is expounded. The process parameters of drill pipe heat treatment are studied and confirmed. Finally, taking 26CrMnMo drill pipe as an example, the concrete heat treatment process is realized on the basis of analysis. The results of mechanical property test show that the hardness, wear resistance and fatigue resistance of drill pipe end and tube body after heat treatment are up to standard. 3) the threaded surface of drill pipe has been quenched by laser surface hardening treatment. The mechanical properties such as surface hardness, depth of quenching layer, wear resistance and fatigue resistance of the same type of drill pipe treated with conventional liquid nitridation were compared and analyzed. The results show that the mechanical properties of drill pipe thread treated by laser surface hardening are better than that of the thread treated by liquid nitriding. Therefore, it is concluded that the application of laser surface hardening treatment in drilling pipe thread surface hardening treatment is successful because friction welding technology has been widely used in the production and manufacture of drill pipe. Therefore, in this chapter, the friction welding process and its subsequent treatment are briefly introduced. The preprocessing of tool joints and pipe ends and the basic process of friction welding are introduced in detail, taking the process of friction welding as the main narration point. The welding parameters are calculated.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE921.2

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