A float collar is similar to a float shoe; often both are used for redundancy, with internal check valves may be flapper type or spring-loaded balls. It is installed near the bottom of the casing string and prevents drilling mud from entering the casing while it is being lowered. Without a float collar or float shoe, the cement slurry placed in the annulus could U-tube, or reverse flow back into the casing.
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- Auto Fill-up Float Collar Conventional Non Rotating
- Differential Fill-up Float Collar
- Float Collar Single Double Valve
- Hydraulic Landing Collar
- Stab-in Float Collar wo Latch in Profile
- Up Jet Side Jet Down Jet Float Collar
