Invention Grant
- Patent Title: Displaceable plug in a tool string filter
- Patent Title (中): 可替代插入工具字符串过滤器
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Application No.: US12405480Application Date: 2009-03-17
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Publication No.: US08028768B2Publication Date: 2011-10-04
- Inventor: David R. Hall , Paula Turner , David Lundgreen
- Applicant: David R. Hall , Paula Turner , David Lundgreen
- Applicant Address: US TX Houston
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Houston
- Agency: Brinks Hofer Gilson & Lione
- Main IPC: E21B43/08
- IPC: E21B43/08 ; E03B3/18
Abstract:
A filter for a drill string comprises a perforated receptacle having an upper end and a lower end. The upper end of the filter comprises a drilling mud intake, and the lower end of the filter comprises an opening. A displaceable plug is seated on the opening at the lower end.
Public/Granted literature
- US20100236833A1 Displaceable Plug in a Tool String Filter Public/Granted day:2010-09-23
Information query
