发明名称 |
Wellhead isolation tool and method of fracturing a well |
摘要 |
A wellhead assembly is provided including a casing and a tubular member mounted over the casing. A flange extends from the tubular member. A generally elongated annular member is provided in the tubular member. The generally elongated annular member has a first end portion above the tubular member and second end portion below the first end portion. A seal is formed between the second end portion and the tubular member. A hanger may be suspended within the tubular member. In such case, a seal may be formed between the elongate annular member and the hanger.
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申请公布号 |
US2008093067(A1) |
申请公布日期 |
2008.04.24 |
申请号 |
US20070001621 |
申请日期 |
2007.12.11 |
申请人 |
DUHN OIL TOOL, INC. |
发明人 |
DUHN REX E.;MEEK ROBERT K. |
分类号 |
E21B33/038;E21B33/03;E21B33/068 |
主分类号 |
E21B33/038 |
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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