发明名称 |
Method for removing gravel pack screens |
摘要 |
A method of removing a gravel packed screen to reach another zone is described. The method involves a bottom hole assembly comprising an isolation device for the screen and a tool to latch on to it. A perforating gun is shot off to put holes in the screen to allow gravel to come through. A flow through a reversing valve is initiated to urge the gravel into the newly perforated screen while a vibrator shakes the screen and stimulates gravel flow through the screen. Alternatively, the screen is not isolated and a reverse circulation from the surface in conjunction with vibration urges the gravel to flow through the screen and out through the tubing supporting the bottom hole assembly.
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申请公布号 |
US6729407(B2) |
申请公布日期 |
2004.05.04 |
申请号 |
US20020238524 |
申请日期 |
2002.09.10 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
STOESZ CARL W.;HAUGHTON DAVID B;SONNIER JAMES A;LYNDE GERALD D;DEGEARE JOSEPH P |
分类号 |
E21B19/00;E21B31/00;E21B31/03;E21B43/04;(IPC1-7):E21B31/20 |
主分类号 |
E21B19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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