API FC Float Collars
Like the FC Float Collar, the FS float shoe also has a back-pressure valve to prevent back flow. It permits cement to run through side ports when the nose of the shoe is on the bottom. Inner valve and bottom guides are all made of drillable material.
Its capability of back-pressure is over 25MPa.
| Specification(in) | O.D.(mm) | Total length(mm) | I.D.(mm) | Min.Dia.(mm) | Conn Type | Affordable strength of back-pressure(Mpa) | |
| Float Collar | 5 | 141.3 | 500 | 110 | 50 | 5 BCSG | 35 |
| 5 1/2 | 153.67 | 530 | 112 | 55 | 5 1/2BCSG | 35 | |
| 7 | 194.46 | 586 | 162.5 | 77 | 7 BCSG | 35 | |
| 9 5/8 | 270 | 720 | 225 | 77 | 9 5/8 BCSG | 35 | |
| 13 3/8 | 365 | 720 | 319 | 77 | 133/8 BCSG | 35 | |
| 20 | 533.4 | 720 | 475 | 77 | 20 BCSG | 35 | |
| Float Shoe | 5 | 140.3 | 495 | 110 | 50 | 5 BCSG | 35 |
| 5 1/2 | 153.67 | 514 | 122 | 55 | 5 1/2 BCSG | 35 | |
| 7 | 194.46 | 533 | 162.5 | 77 | 7 BCSG | 35 | |
| 9 5/8 | 269.88 | 550 | 225 | 77 | 9 5/8 BCSG | 35 | |
