发明名称 |
Cup tool, cup tool cup and method of using the cup tool |
摘要 |
A cup tool includes a cup tool tube having a threaded upper end for connection to a high-pressure mandrel, an outer surface over which an elastomeric cup is slidably mounted for reciprocal movement from an unset position for entry into a wellbore to a set position in which an annular gap is obstructed to contain fluid pressure below the elastomeric cup. The outer surface of the cup tool tube has a lower portion of a first diameter and an upper portion with a second, larger diameter and a tapered region between the upper portion and the lower portion. The elastomeric cup includes a lip seal that rides against the outer surface of the cup tool tube, and seals against the tapered region of the cup tool tube to provide a high pressure seal between the cup tool tube and the elastomeric cup in the set position.
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申请公布号 |
US7278477(B2) |
申请公布日期 |
2007.10.09 |
申请号 |
US20040979414 |
申请日期 |
2004.11.02 |
申请人 |
STINGER WELLHEAD PROTECTION, INC. |
发明人 |
MCGUIRE BOB;DALLAS L. MURRAY |
分类号 |
E21B33/12 |
主分类号 |
E21B33/12 |
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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