缺陷钻杆的分级及再制造研究
发布时间：2018-08-24 14:09
【摘要】：目前,钻井区域广泛分布于沙漠及浅滩,多为深井施工作业,井型多以定向井、水平井及丛式井为主。在施工过程中,由于井深较大,钻进时地层多变,钻杆在井下环境中受力较复杂,钻杆磨损、腐蚀等现象较为严重,形成了多种类型的缺陷,钻杆缺陷引发的钻杆失效事故也时有发生。钻井施工对钻杆的质量要求也十分严格,凡是存在缺陷的钻杆基本上都降级或停止使用,导致大量的钻杆资源闲置,造成资源浪费。华北油区钻井过程中使用量较大的常规钻杆为5寸钻杆,因此,本课题主要针对5寸钻杆进行失效分析,分析了钻杆的主要缺陷部位及缺陷特征,获得缺陷钻杆的状态参数,通过钻杆的外部和内部状况确定缺陷钻杆的分级标准,通过理论分析、数值模拟计算,对用于再制造的钻杆管体进行可靠性评价。根据缺陷钻杆的检测结果,优选出可用于再制造的一级、二级缺陷钻杆管体用于钻杆的再制造。制定缺陷钻杆的再制造技术方案,确定缺陷钻杆的再制造工艺流程及相关工艺参数,并选配了再制造装置。将再制造的钻杆进行拉力试验和现场使用试验,完善摩擦焊接的工艺参数,同时对制造效果进行分析,再制造钻杆的机械性能满足标准要求。
[Abstract]:At present, drilling area is widely distributed in desert and shoal, mostly deep well operation, well type is mainly directional well, horizontal well and cluster well. In the process of construction, due to the large depth of well, the changeable formation during drilling, the complicated force of drill pipe in the downhole environment, the serious phenomenon of drill pipe wear, corrosion and so on, many kinds of defects have been formed. The failure accident of drill pipe caused by drill pipe defect also happens from time to time. The quality requirement of drilling pipe is also very strict. All defective drill pipes are basically degraded or stopped in use, resulting in a large number of drilling pipe resources idle, resulting in waste of resources. The conventional drill pipe used in North China oil drilling area is 5 inch drill pipe. Therefore, this paper mainly analyzes the failure of 5 inch drill pipe, analyzes the main defect position and defect characteristics of drill pipe, and obtains the state parameters of defective drill pipe. The classification standard of defective drill pipe is determined by the external and internal conditions of the drill pipe. The reliability of the drill pipe body used for remanufacturing is evaluated by theoretical analysis and numerical simulation. According to the test results of defective drill pipe, the first grade and the second grade defective drill pipe can be selected for remanufacture. The remanufacturing technology scheme of defective drill pipe was established, and the remanufacturing process and related technological parameters were determined, and the remanufacturing device was selected. In order to improve the process parameters of friction welding, the mechanical properties of the remanufactured drill pipe can meet the requirements of the standard, and the mechanical properties of the remanufactured drill pipe can meet the requirements of the standard.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE921.2
本文编号：2201060
[Abstract]:At present, drilling area is widely distributed in desert and shoal, mostly deep well operation, well type is mainly directional well, horizontal well and cluster well. In the process of construction, due to the large depth of well, the changeable formation during drilling, the complicated force of drill pipe in the downhole environment, the serious phenomenon of drill pipe wear, corrosion and so on, many kinds of defects have been formed. The failure accident of drill pipe caused by drill pipe defect also happens from time to time. The quality requirement of drilling pipe is also very strict. All defective drill pipes are basically degraded or stopped in use, resulting in a large number of drilling pipe resources idle, resulting in waste of resources. The conventional drill pipe used in North China oil drilling area is 5 inch drill pipe. Therefore, this paper mainly analyzes the failure of 5 inch drill pipe, analyzes the main defect position and defect characteristics of drill pipe, and obtains the state parameters of defective drill pipe. The classification standard of defective drill pipe is determined by the external and internal conditions of the drill pipe. The reliability of the drill pipe body used for remanufacturing is evaluated by theoretical analysis and numerical simulation. According to the test results of defective drill pipe, the first grade and the second grade defective drill pipe can be selected for remanufacture. The remanufacturing technology scheme of defective drill pipe was established, and the remanufacturing process and related technological parameters were determined, and the remanufacturing device was selected. In order to improve the process parameters of friction welding, the mechanical properties of the remanufactured drill pipe can meet the requirements of the standard, and the mechanical properties of the remanufactured drill pipe can meet the requirements of the standard.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE921.2
【参考文献】
相关期刊论文 前2条
1 齐秀滨;刘娟;周军;赵玉珊;;摩擦焊在我国石油钻杆制造中的应用[J];电焊机;2010年06期
2 杜飞;;浅谈钻杆失效分析[J];科技风;2010年05期
，本文编号：2201060
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