Flexible Subsea Blowout Prevention
GE Oil & Gas Checkguard™ drop-in check valves prevent return flow during a kick and are suitable for most drilling situations in which return flow through the drill string is a risk and normal operation requires the benefits of a full-bore sub. By preventing upward flow through the drill pipe, but allowing fluid to be pumped downward to circulate the well, the valves provide the driller with the means to control the drill pipe pressures when required, significantly improving and simplifying well control.
Checkguard valves can be installed:
- While stripping drill pipe into the hole to control upwardpressure in the drill pipe
- Prior to shearing drill pipe to protect against the release of wellpressure
- While tripping to contain upward well bore pressure in the drillpipe, allowing the top connection to be open