Automatic grout float collar float shoe
automatic irrigation mud designed to reduce the amount of mud on the back of the annulus and the return rate, reduced sleeve decentralization process of the bottom of the shock pressure, effectively prevent casing pressure process because of the excitement caused by lost circulation .
Non-automatic grout float collar float shoe
the tongue plate springs back pressure control valve is closed by the controlling single-stream period of time, which can effectively avoid the formation of a cement plug cement reflux in the tube.
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