Invention Grant
- Patent Title: Dual-type plug for wellhead
- Patent Title (中): 井口双插头
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Application No.: US10557435Application Date: 2004-05-19
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Publication No.: US07654329B2Publication Date: 2010-02-02
- Inventor: Hans Jørgen Lindland , Stein Følkner
- Applicant: Hans Jørgen Lindland , Stein Følkner
- Applicant Address: NO Kongsberg
- Assignee: FMC Kongsberg Subsea AS
- Current Assignee: FMC Kongsberg Subsea AS
- Current Assignee Address: NO Kongsberg
- Priority: NO20032330 20030522
- International Application: PCT/NO2004/000151 WO 20040519
- International Announcement: WO2004/104364 WO 20041202
- Main IPC: E21B29/12
- IPC: E21B29/12
Abstract:
The invention concerns a dual-type plug to be used in a wellhead. The plug has a separate retrievable inner plug (50). Retrieving only the inner plug allows the use of lighter workover equipment than if the whole plug (10) must be pulled.
Public/Granted literature
- US20070074870A1 Dual-type plug for wellhead Public/Granted day:2007-04-05
Information query
