U301 Float Collars
The primary function of a float collar is to guide casing down hole to a specified depth, while preventing the u-tubing of drilling fluid from the annulus up into the casing. A secondary use of float equipment is to lessen the load on the drilling rig by “floating” the casing as it is run down hole. Ultimately, it plays multiple roles in the cementing process. Float collars are primarily used as a point of landing for cementing plugs during the displacement of the cement slurry. They are utilized to create a system of redundancy in the cementing process by acting as a backup for the valve located in the float shoe. Finally, they allow the user to capture the cement contained in the space between the float shoe and collar, (shoe track) preventing its movement from the annular space back into the casing. Ferro Tube’s float collars are capable of supporting a wide range of pressures such as the impact pressures associated with wiper plugs pumped through the casing which land on the collar and the back pressures from the cement slurry within the annulus column trying to flow back up the casing. During periods of circulation, the valves must be able to withstand a wide range of abrasive qualities associated with drilling fluids and cement slurry mixes. The valves, located in a float collar, must be able to withstand long periods of circulation testing, which is done at our flow loop testing facility in Weatherford, Texas. All of our valves are PDC drillable to ensure compatibility with customer requirements. We manufacture and test a variety of float collars with either single or doublevalve configurations, differential fill valves (auto fill) and orifice float collars.
Key features include:
• Meets or exceeds API RP10F category specifications for pressure and flow requirements
• Serve as a secondary valve after displacement of cement
• PDC Drillable
• Single or Double Valve Configuration