Float collar Float shoe Float collar Float shoe are mounted on the middle and end parts of casing string, the main purpose is to prevent the annulus grout pour back into the pipe string, the check valve can provided buoyancy and alleviate the drilling rig loading in the process of putting the casing pipe.
After cementing slurry displacement, float collar can also withstand cementing plug and achieve bumping.
-Ball valve type float collar float shoe
-The tongue plate type float collar float shoe
-Spring type float collar float shoe
-cement spring type float collar float shoe
-stab in type float collar float shoe
-Non-rotating type float collar float shoe
-self fill-uptype float collar float shoe
self fill-uptype float collar float shoe
-It can automatic and adjustable filling when put the casing pipe, apparently reducing the pressure acting on the bottom.
-This type automatic self fill-up type float collar and float shoe through the transformation of a single valve to finish the automatic filling. Setting a steel ball groove on the valve rod,loading the ball before going down, the ball stick in the body, so that the spring can not be reset, keeping the upper and lower portion of the valve is transparent. Thus, The liquid of the well can enter the casing pipe which on the top of float collar and float shoe in the process of going down well.keeping the balance pressure inside and outside the casing. When there is downward pressure on the valve rod, to make ball fall, spring return, converted
no-rotating float collar
-Designed no-rotating plug and self-rock plug improve the drilling speed. It easily to grind the plug and plug seat on the action of pressure and rotating when grinding, saving grinding time. There will not be affected in separated drilling mud and water, bumping pressure and so on.
-No-rotating spool compared with no-rotating plug, can significantly imporve drilling speed.