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发明名称
下套管不灌液和固井碰压关闭浮箍
摘要
一种用于油田钻完井可连续下套管不灌液和固井碰压关闭浮箍,它是连接于套管串上的一短节20,其中球体9支撑在杆8上,且其上部有固定在短接内壁上的环形挡板11,挡板上中心孔径小于球体的横向直径;杆8穿过固定在短节下部的底盘6并用锁销5定位,球体9与底盘6之间杆8外套有压缩弹簧7;在挡板11、底盘6同侧穿过栓杆17,在栓杆末端与销子5之间拴绳索4并经滑轮3,同时底盘6上有返液孔21。下套管过程中由孔21使套管内外压力平衡,固井后用胶塞下行压栓杆下移拉出锁销5,使浮球上行封住中心孔。
申请公布号
CN2136325Y
申请公布日期
1993.06.16
申请号
CN92236799.X
申请日期
1992.10.24
申请人
殷朝阳
发明人
殷朝阳
分类号
E21B33/00
主分类号
E21B33/00
代理机构
代理人
主权项
1、一种用于油田钻完井可连续下套管不灌液和固井碰压关闭浮箍,它是在浮箍上构成的,其特征:浮箍为套管上一短接20。其中经挡板11、底盘6同侧穿过垂直栓杆17,栓杆末端与销子5之间于底盘6上固定滑轮轴2,在二者(17,5)之间栓一绳索4经滑轮套3。
地址
163001黑龙江省大庆石油管理局钻井二公司
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