• In addition, Large plugs must be used to separate the cement from the mud and have to be drilled out, along with any cement In the 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.
• 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.
• Problem with high displacement are overcome by using Stab in Cementing Equipment to allow cementing through Drill pipe.

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”,  stab-in cement Float Shoe & Collar are also available with Double Valve and any combination