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发明名称
一种改进的自封封井器
摘要
本实用新型公开了一种用于油田修井作业的改进的自封封井器,该封井器由壳体、橡胶芯子及胶芯压盖组成,壳体下端面只有钢圈槽,壳体上部带法兰,长圆头螺栓沉入上部法兰与井口大四通相连,上部法兰可与座式背钳连接,承受正反扭矩。该封井器安装高度低,质量轻,安装拆卸方便。
申请公布号
CN2055858U
申请公布日期
1990.04.11
申请号
CN89201775.9
申请日期
1989.02.14
申请人
于文祥
发明人
于文祥;张培仁
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
1、一种由壳体(17)、橡胶芯子(12)及胶芯压盖(14)组成的改进自封,其特征在于:壳体(17)的下端面不带法兰,只有钢圈槽(7),壳体上部有上法兰(3),胶芯压盖(14)与壳体(17)间用螺纹连接。
地址
天津市大港石油管理局采油一厂二矿
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