油田连续油管井下切割设备的结构研究

发布时间：2018-04-09 11:26

本文选题：连续管水力切割　切入点：结构设计　出处：《沈阳理工大学》2015年硕士论文

【摘要】：对修井过程可能出现油管、套管管柱卡钻等事故,现场一般通过大力上提,活动上提等基本程序解卡,如仍不能解卡管柱时,必须采用将管柱切断的方式将油管提出井外。目前油井有些是小管径、大斜度油井,要求解决井下切断设备有效高效的切管以及小管径及大斜度井设备难以输送到指定位置的问题。本设计专门针对于小口径油管及设备难以到达油井而设计,具有自动化程度高、效率高、切割断面平整,易于提出井外的优点,本论文主要包括以下内容:(1)介绍了井下油井油管切割设备的结构设计,并给出具体的UG模型图以及CAD图以及了解设备构件之间的运动与装配关系,设备相关配合设备的使用以及设备入井、工作、出井的过程。(2)通过ABAQUS有限元仿真软件对切割设备的长轴壳体进行模态分析,分析其各阶固有频率,以防止割刀在在转动过程中引起共振而影响切割的稳定性,然后对刀头、推刀杆、刀具壳体等进行应力与应变分析,确保其在在切割过程中的强度、刚度、形变位移能够保证切割设备的使用安全与寿命。(3)通过推刀杆进行优化设计,增大推刀杆底座的厚度以及增大底座与推杆的过度圆角,减小了其变形位移量,使切割设备平稳切割。(4)解决切割设备的井下定位问题,通过马丁代克深度传感器将电平信号输送到单片机进行计数以及运算,通过液晶显示屏能够显示设备的深度、上行及下放速度等信息,便于井上人员的操作,并进行现场试验进行验证。
[Abstract]:In view of the accidents such as tubing and casing string jammed in the workover process, the basic procedures such as strong lifting and active lifting are generally adopted in the field. If the pipe string cannot be unplugged, the tubing must be cut off to raise the tubing out of the well.At present, some oil wells are small pipe diameters and high sloping wells, so it is necessary to solve the problem that the downhole cutting equipment is effective and efficient, and it is difficult to transport the small pipe diameter and large slope well equipment to the designated position.This design is specially designed for the small diameter tubing and equipment which is difficult to reach the oil well. It has the advantages of high automation, high efficiency, smooth cutting section and easy to put forward out of the well.This paper mainly includes the following contents: 1) introduce the structure design of the downhole oil well tubing cutting equipment, and give the UG model diagram and CAD diagram, and understand the movement and assembly relationship between the components of the equipment.The use of related equipment, the process of equipment entering and working, and the process of well exit. (2) the modal analysis of the long axis shell of the cutting equipment is carried out by ABAQUS finite element simulation software, and the natural frequencies of each order are analyzed.In order to prevent the cutting tool from resonating in the process of rotation, the stability of the cutting is affected, and then the stress and strain analysis of the head, the push rod and the shell of the cutter are carried out to ensure the strength and rigidity of the cutter during the cutting process.Deformation displacement can ensure the safety and service life of cutting equipment. It can optimize the design by means of the push tool rod, increase the thickness of the base and increase the excessive circle angle between the base and the push rod, so as to reduce the deformation displacement.Make the cutting equipment smooth cutting. 4) solve the downhole positioning problem of cutting equipment, send the level signal to the single chip computer to count and calculate through Martin depth sensor, and display the depth of the equipment through liquid crystal display screen.The uplink and down-speed information are convenient for the operation of the personnel in the well, and field tests are carried out to verify them.
【学位授予单位】：沈阳理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE931.2

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