发明名称 |
Downhole Isolation and Depressurization Tool |
摘要 |
A depressurization tool is described for use downhole in depressurizing an isolated zone. A decompression chamber containing a compressible fluid volume is described. The opening of the chamber is sealed with a closure that is configured to open upon application of a pressure differential across the opening. When used downhole within an isolated and nonpermeable wellbore zone, excessive ambient pressure will cause the closure to open and allow the chamber to fill with fluid at increased pressure, depressurizing the wellbore zone. The tool is useful in wellbore completion systems that include sliding sleeves.
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申请公布号 |
US2013248181(A1) |
申请公布日期 |
2013.09.26 |
申请号 |
US201213709908 |
申请日期 |
2012.12.10 |
申请人 |
GETZLAF DONALD;STROMQUIRST MARTY;RAVENSBERGEN JOHN EDWARD;LAUN LYLE;SCHMELZL ERIC;NCS OILFIELD SERVICES CANADA, INC. |
发明人 |
GETZLAF DONALD;STROMQUIRST MARTY;RAVENSBERGEN JOHN EDWARD;LAUN LYLE;SCHMELZL ERIC |
分类号 |
E21B34/06 |
主分类号 |
E21B34/06 |
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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