Floating shoes are one of the necessary accessories of the lower structure of casing string, which are usually connected to the lower part of the string to guide the casing string into the well smoothly, prevent cement slurry backflow and realize the release pressure after cementing pressure, reduce the load of the derrick and control the height of the cement plug.
Technical Parameters
| Type | OD | DN | Positive Pressure (MPa) | Reverse Pressure (MPa) | Thread | Standard |
|---|---|---|---|---|---|---|
| 5 1/2″ | φ160 | φ124.3 | 35 | 35 | LCSG | SY-T 5618-2016 |
| 7″ | Φ200 | φ159 | 35 | 35 | LCSG | SY-T 5618-2016 |
| 9 5/8″ | φ270 | φ225 | 35 | 35 | LCSG | SY-T 5618-2016 |
| 13 3/8″ | φ365 | φ325 | 21 | 21 | BTC | SY-T 5618-2016 |
Characteristics
The internal components of this device are machined from aluminum alloy with good drillability. After cementing with 9 5/8″ float hoop and float shoe, it can be drilled directly into three holes.