Features：
1.Single valve or double valve
2.Improve displacement accuracy
3.available in size 5-1/2”-20”
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Stab-In float collar&shoe is an improved method for cementing large diameter casing.With stab-in float collar&shoe, the Drill Pipe is stabbed directly into the Float Shoe or Collar and cement is pumped through the drill pipe until returns reach surface.Cement is then displaced to the bottom of the Drill Pipe a wiper dart can be used. The drill pipe is then picked up, circulated, and pulled out of the hole.
In addition,large plugs must be used to seperate the cement from the mud and have to be drilled out, along with any cement in the casing. The Stab In Float collar&shoe is used for cementing large diameter casings lowered on drill pipe. The string presents special cementing consideration due to high displacement volume of large diameter casing.
Features
Small diameter inner string off drill pipe is used to displace cement which minimizes displacement volume behind Cement and there by reduces contamination and save time.
Drill out of cement inside large casing is minimized by controlling cement top with displacement fluid in drill pipe And Plunger valve in Stab in Shoe
Improve displacement accuracy — cement mixing and pumping continues until cement returns reach surface
Get better cement quality — the reduced cement/mud interface area and high velocity of flow in the Drill Pipe Minimize cement contamination while the short pumping time eliminates the need for cement retarders
Reduce cement volume — conventional displacement requires calculation of excess cement factor, whereas with Stab-in methods excess cement need be no greater than the volume of the drill pipe. No large plugs are needed
Reduce net rig time — circulating, pumping, and drill-out times are minimized
Protect casing — cementing pressures are confined to the drill pipe as in a squeeze job
The Stab-in cementing equipment is available in size 5-1/2”-20”
The Stab-in cement Float Shoe & Collar are also available with Double Valve and any combination
Structure:
How to use it
Float Collar&shoe Production and Inspection
Float Collar&Shoe Package
