Invention Grant
- Patent Title: Wellhead isolation tool and wellhead assembly incorporating the same
- Patent Title (中): 井口隔离工具和包含其的井口组件
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Application No.: US12154338Application Date: 2008-05-21
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Publication No.: US07726393B2Publication Date: 2010-06-01
- Inventor: Rex E. Duhn , Robert K. Meek
- Applicant: Rex E. Duhn , Robert K. Meek
- Applicant Address: US CA Bakersfield
- Assignee: Duhn Oil Tool, Inc.
- Current Assignee: Duhn Oil Tool, Inc.
- Current Assignee Address: US CA Bakersfield
- Agency: Christie, Parker & Hale, LLP
- Main IPC: E21B33/03
- IPC: E21B33/03
Abstract:
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 hanger may be suspended within the tubular member. In such case, a seal may be formed between the elongate annular member and the hanger.
Public/Granted literature
- US20080223570A1 Wellhead isolation tool and wellhead assembly incorporating the same Public/Granted day:2008-09-18
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