Invention Grant
- Patent Title: Pump through circulating and or safety circulating valve
- Patent Title (中): 泵通过循环和/或安全循环阀
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Application No.: US12868555Application Date: 2010-08-25
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Publication No.: US08973663B2Publication Date: 2015-03-10
- Inventor: Paul David Ringgenberg , Charles Frederick Carder
- Applicant: Paul David Ringgenberg , Charles Frederick Carder
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agent Chamberlain Hrdlicka
- Main IPC: E21B34/14
- IPC: E21B34/14 ; E21B21/10 ; E21B34/10
Abstract:
According to one embodiment, a recirculation safety valve is disclosed. The valve has a tubular body with mandrel that is axially shifted in response to annulus pressure. Shifting of the mandrel can either close a safety valve or close a safety valve and open a recirculation port. The valve has an annular actuation chamber that relieves that pressure to prevent inadvertent shifting of the mandrel.
Public/Granted literature
- US20120048564A1 PUMP THROUGH CIRCULATING AND OR SAFETY CIRCULATING VALVE Public/Granted day:2012-03-01
Information query
