
基本信息:
- 专利标题: 一种固井用套管浮箍装置
- 专利标题(英):Casing float collar device for cementing
- 申请号:CN201220747004.2 申请日:2012-12-31
- 公开(公告)号:CN203022685U 公开(公告)日:2013-06-26
- 发明人: 王大权 , 李志刚 , 雷东瑞 , 周兴春 , 窦虎清 , 李德伟
- 申请人: 中国石油集团川庆钻探工程有限公司长庆固井公司
- 申请人地址: 陕西省西安市未央路151号长庆大厦固井公司
- 专利权人: 中国石油集团川庆钻探工程有限公司长庆固井公司
- 当前专利权人: 中国石油集团川庆钻探工程有限公司长庆固井公司
- 当前专利权人地址: 陕西省西安市未央路151号长庆大厦固井公司
- 代理机构: 西安吉盛专利代理有限责任公司
- 代理人: 张培勋
- 主分类号: E21B33/13
- IPC分类号: E21B33/13
The utility model relates to a casing float collar device for cementing. The device is characterized in that the device at least comprises a float collar shell, a valve seat, a valve plug and a coupling, which are in excircle-shaped structures; the float collar shell is small in diameter; the coupling is big in diameter; the float collar shell is located in a bucket of the coupling; the bottom of the coupling is muff-coupled with the valve seat; the valve seat and the coupling are sealed by seal rings; a hopper opening is arranged in the middle of the valve seat; the valve plug is movably connected with the valve seat; a flat seal ring pressing cap and a flat seal ring are arranged at the hopper opening of the valve seat from top to bottom in sequence so that the valve plug and the valve seat are sealed; a connecting rod is connected at the upper end of the valve plug and extends out of a through hole of a spring seat at the upper end; and a muff-coupling spring is arranged between the spring seat and the upper end face of the hopper opening. The device has the advantages that the device has reliable sealability and wide application scope, can be suitable for drilling and cementing processes of ultradeep wells, inclined wells and horizontal wells, is a special tool for cementing and is connected between casing connection buckles; and the channel in the casing is closed by the float collar, the float shoe and the valve plug.
IPC结构图谱:
E | 固定建筑物 |
--E21 | 土层或岩石的钻进;采矿 |
----E21B | 土层或岩石的钻进;从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |
------E21B33/00 | 井眼或井的密封或封隔 |
--------E21B33/02 | .地面密封或封隔 |
----------E21B33/13 | ..用于封堵井眼、裂隙或类似情况的注水泥方法或装置 |