A packer type tubing plug, including slip carrier, outer center tube, central tube, slip, slip support, lock ball, rubber tube, rubber tube, shear pin packer pressure cap, cylinder liner, piston, snap ring, liquid inlet, piston, tail sleeve. The inner center pipe is arranged outside the center tube, outside the central pipe are sequentially mounted on the slip carrier, slip, slip carrier, rubber tube, rubber cylinder pressure cap, cylinder liner, piston and tail tube, the piston is arranged between the outer central pipe and the tail casing, the pressure chamber is formed on the piston, the piston. The air cavity. The utility model has the advantages of long time sealing tubing and sealed again, to avoid security risks, gravity delivery, no delivery equipment, convenient construction, low cost, widely used in oil well operation well control equipment.
【技术实现步骤摘要】
【技术保护点】
1.一种自坐封式油管堵塞器,包括上卡瓦托(1)、外中心管(3)、内中心管(4)、卡瓦(5)、卡瓦托(6)、锁球(7)、胶筒(9)、坐封剪钉(10)、胶筒压帽(11)、缸套(12)、开口卡环(13)、上活塞(14)、进液口(16)、下活塞(17)、尾套管(19),其特征在于所述内中心管(4)外安装有外中心管(3),外中心管(3)外顺次安装有上卡瓦托(1)、卡瓦(5)、卡瓦托(6)、胶筒(9)、胶筒压帽(11)、缸套(12)、上活塞(14),尾套管(19)相连于上活塞(14)上,下活塞(17)安装于内中心管(4)和尾套管(19)之间,下活塞(17)之上形成压力腔(15),下活塞(17)之下形成常压空气腔(18)。
【技术特征摘要】
【专利技术属性】
技术研发人员:高广启,魏斌,罗文莉,安申法,马珍福,付增,宋辉辉,岳振玉,金鑫,
申请(专利权)人:中国石油化工股份有限公司,中国石油化工股份有限公司胜利油田分公司采油工艺研究院,
类型:实用新型
国别省市:11
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