The invention relates to the field of oil pipe operation in oil field, which belongs to the improvement of the structure of the downhole plugging device of the disconnected plunger type pump, especially a downhole plugging device for the non pressure well operation of the disconnected plunger type pump, including the sucker rod in the oil pipe column located on the pump, connecting the plunger pump, and connecting the release tube on the lower port of the oil pipe column on the pump. The lower end of the release tube is connected with the pump cylinder, the lower end of the pump cylinder is set with a seal convex platform, the pump cylinder is connected to the lower oil pipe column, the lower end of the oil pipe column under the pump is closed, and the plunger pump is fitted in the pump cylinder, the upper end is connected with the sucker rod through the plunger demultiplexer, and the lower end of the plunger pump is connected by the fixed valve demultiplexer. The front cover of the upper end of the fixed valve is matched with the sealing protruding platform. The lower end of the fixed valve is connected with the inner tube assembly through the inner tube depot. The inner diameter of the limit ring set at the upper part of the lower oil pipe column is smaller than the outer diameter of the inner tube. It is reasonable in structure and reliable in performance. It can block down the pressure of the downhole many times and take up the workover operation of the sucker rod and oil pipe with pressure. It can block the pipe from the underground, cut off the pressure inside and outside the tube, save energy, protect the environment, improve the safety factor, improve the production efficiency and reduce the cost.
【技术实现步骤摘要】
一种脱接柱塞管式泵不压井作业的井下封堵装置
本专利技术涉及油田油管作业领域,属于脱接柱塞管式泵井下封堵装置结构的改进,特别是一种脱接柱塞管式泵不压井作业的井下封堵装置。
技术介绍
在采用管式泵的高产油井中,或上级油管采用内衬管时,为保证产量,会使用泵径大于上级油管内径的抽油泵。这时抽油泵的柱塞只能和泵筒同时下入或提出。抽油杆和柱塞之间安装脱接器,通过轴向运动实现对接或脱开。在修井过程中,需要封堵泵下管道,隔绝管道内、外压力源。避免施工过程中,井下介质喷出,造成能源浪费,环境污染,或安全事故。目前没有类似产品能满足以上要求,修井时一般使用压井液,从油管内灌入,限制井下压力。作业周期长,成本高。
技术实现思路
本专利技术的目的在于提供一种脱接柱塞管式泵不压井作业的井下封堵装置,其结构合理,性能可靠,可以多次封堵井下压力,带压起下抽油杆、油管的修井作业,可以从井下封堵管道,隔绝管内外压力,节约能源,保护环境,提高安全系数,提高生产效率,降低成本。本专利技术的目的是这样实现的:一种脱接柱塞管式泵不压井作业的井下封堵装置,包括位于泵上的油管柱内的抽油杆连接着柱塞泵,在泵上油管柱的下端口上连接着释放管,释放管的下端口连接着泵筒,在泵筒内的下端设置着密封凸台,泵筒连接着泵下油管柱,泵下油管柱的下端封闭,配合安装在泵筒内的柱塞泵,其上端通过柱塞脱接器连接着抽油杆,柱塞泵的下端通过固定阀脱接器连接着固定阀,固定阀上端的挡台封面与密封凸台相配合,固定阀的下端通过内管脱接器连接着内管总成,在泵下油管柱内上部设置的限位环台的内径小于内管总成内管的外径。本专利技术的工作原理:1,安装油 ...
【技术保护点】
1.一种脱接柱塞管式泵不压井作业的井下封堵装置,包括位于泵上的油管柱(1)内的抽油杆(4)连接着柱塞泵(6),其特征是:在泵上油管柱(1)的下端口上连接着释放管(2),释放管(2)的下端口连接着泵筒(3),在泵筒(3)内的下端设置着密封凸台(10),泵筒(3)连接着泵下油管柱(13),泵下油管柱(13)的下端封闭,配合安装在泵筒(3)内的柱塞泵(6),其上端通过柱塞脱接器(5)连接着抽油杆(4),柱塞泵(6)的下端通过固定阀脱接器(7)连接着固定阀(9),固定阀(9)上端的挡台(8)封面与密封凸台(10)相配合,固定阀(9)的下端通过内管脱接器(11)连接着内管总成,在泵下油管柱(13)内上部设置的限位环台(12)的内径小于内管总成内管(15)的外径。
【技术特征摘要】
1.一种脱接柱塞管式泵不压井作业的井下封堵装置,包括位于泵上的油管柱(1)内的抽油杆(4)连接着柱塞泵(6),其特征是:在泵上油管柱(1)的下端口上连接着释放管(2),释放管(2)的下端口连接着泵筒(3),在泵筒(3)内的下端设置着密封凸台(10),泵筒(3)连接着泵下油管柱(13),泵下油管柱(13)的下端封闭,配合安装在泵筒(3)内的柱塞泵(6),其上端通过柱塞脱接器(5)连接着抽油杆(4),柱塞泵(6)的下端通过固定阀脱接器(7)连接着固定阀(9),固定阀(9)上端的挡台(8)封面与密封凸台(10)相配合,固定阀(9)的下端通过内管脱接器(11)连接着内管总成,在泵下油管柱(13)内上部设置的限位环台(12)的内径小于内管总成内管(15)的外径。2.根据权利要求1所述的一种脱接柱塞管式泵不压井作业的井下封堵装置,其特征是:释放管(2)的内径待遇柱...
【专利技术属性】
技术研发人员:吕俊锋,樊玉新,胡新玉,刘崇勇,陈晓春,张建兵,齐克健,张耀武,张益民,
申请(专利权)人:克拉玛依胜利高原机械有限公司,
类型:发明
国别省市:新疆,65
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