![免钻式盲板及免钻塞固井工艺](/CN/2017/1/296/images/201711481237.jpg)
基本信息:
- 专利标题: 免钻式盲板及免钻塞固井工艺
- 专利标题(英):Drilling-free blind plate and drilling-plug-free well cementation process
- 申请号:CN201711481237.6 申请日:2017-12-29
- 公开(公告)号:CN109989725A 公开(公告)日:2019-07-09
- 发明人: 董恩博 , 李国锋 , 李伟 , 冯德杰 , 肖经纬 , 马德材 , 邵茹 , 陶剑 , 赵勇 , 李光洪 , 曹成章 , 饶鸿飞 , 马丁
- 申请人: 中石化石油工程技术服务有限公司 , 中石化胜利石油工程有限公司 , 中石化胜利石油工程有限公司钻井工艺研究院
- 申请人地址: 北京市朝阳区北辰西路8号北辰世界中心A座703; ;
- 专利权人: 中石化石油工程技术服务有限公司,中石化胜利石油工程有限公司,中石化胜利石油工程有限公司钻井工艺研究院
- 当前专利权人: 中石化石油工程技术服务有限公司,中石化胜利石油工程有限公司,中石化胜利石油工程有限公司钻井工艺研究院
- 当前专利权人地址: 北京市朝阳区北辰西路8号北辰世界中心A座703; ;
- 代理机构: 东营双桥专利代理有限责任公司
- 代理人: 侯华颂; 李勇
- 主分类号: E21B33/13
- IPC分类号: E21B33/13
The invention relates to a drilling-free blind plate and a drilling-plug-free well cementation process adopting the same. The drilling-free blind plate comprises an upper connector, a lower connector,a sealing mechanism and a blind plate inner core, an annular step protrudes from the inner wall of the lower portion of a thread of the lower connector and clamps the blind plate inner core togetherwith the bottom end of the upper connector, and the blind plate inner core and the upper connector, as well as the blind plate inner core and the lower connector form sealed blind ends respectively. According to the drilling-plug-free well cementation process, the drilling-free blind plate is adopted, a drifting tool is lowered after well cementation is finished, and the blind plate inner core iscrushed. The drifting drill bit can be directly lowered to crush the blind plate for normal drifting, the risk that the drill plug damages a sleeve is avoided, and the complexity of the tool and the construction process is greatly simplified.
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 |