电控油管堵塞器的研制与应用  

Development and Application of Electric Control Tubing Plug

作　　者：黄辉建 Huang Huijian(Engineering Technology Research Institute of CNPC Great Wall Drilling Company)

机构地区：[1]长城钻探工程公司工程技术研究院

出　　处：《石油机械》2020年第11期107-110,共4页China Petroleum Machinery

基　　金：长城钻探工程有限公司工程技术研究院科研项目“油水井带压作业关键技术研究”(201809)。

摘　　要：针对常规油管堵塞器存在投放位置不准确、中途易遇阻及坐封动力不足导致封堵油管可靠性差等问题,研制了新型电控油管堵塞器。该堵塞器利用钢丝投送至预定位置,再通过钢丝拉力作用实现堵塞器卡瓦机构对油管内壁的锚定,在地面预设好的电路控制系统定时开启电动机,电动机带动丝杠进而驱动推动头压缩胶筒实现高强度坐封,完成油管内腔的封堵,最后通过反复强力提拉钢丝实现丢手。室内试验结果表明,该堵塞器在压差35 MPa、温度90℃的条件下,能顺利实现锚定、封堵、丢手和电机反转解封等动作。现场带压作业过程中,该堵塞器可实现油管压力35 MPa以内不放喷、不压井起下油管柱作业,具有锚定可靠和坐封力强等优点,并且可以重复使用,可以减少压井液对产层的污染,最大限度保持油气层原始地层状态,对提高产能和采收率具有重要作用。新型电控油管堵塞器能够较好地解决常规油管堵塞器存在的问题,为带压作业现场提供了有力的技术支持。To address the problems of the traditional tubing plug,such as poor reliability caused by inaccurate placement,easy stuck,and insufficient setting power,a new type of electrical control tubing plug is developed.The plug is delivered to a predetermined position by a steel wire.And then the plug slip mechanism is anchored to the inner wall of the tubing through the pulling force of the steel wire.The circuit control system preset on the ground turns on the motor at set time,and the motor drives the screw to drive the pushing head to compress the rubber barrel to realize high-strength setting and complete the sealing of the inner cavity of the tubing.Releasing is achieved by repeatedly pulling the steel wire strongly.The indoor test results show that the plug can smoothly achieve anchoring,sealing,and releasing by motor reverse rotation under the conditions of a pressure difference of 35 MPa and a temperature of 90℃.In the field snubbing operation,the plug can allow tubing RIH or ROH without releasing the tubing pressure or killing the well when the tubing pressure is within 35 MPa.It has the advantages of reliable anchoring and strong setting power,and can be reused.The plug could reduce the pollution of kill well fluids to the pay zone and maintain the original formation state of the oil and gas zone,presenting an important role in improving productivity and recovery.

关 键 词：油管堵塞器 带压作业 油水井 电控坐封 室内试验 

分 类 号：TE933[石油与天然气工程—石油机械设备]