Stab-in Casing Float Collar And Float Shoe API or As required
The technique known as Stab-In Float Collar and Shoe represents an innovative approach utilized for cementing large diameter casings during drilling operations. This method requires directly inserting the drill pipe into the Float Shoe or Collar, while pumping cement through the drill pipe until it reaches the surface. To ensure the proper placement of cement, a wiper dart can be utilized to displace the cement to the bottom of the drill pipe. Once this process is completed, the drill pipe is lifted, circulated to ensure even cement distribution, and eventually removed from the wellbore.
It is crucial to point out that when implementing the Stab-In Float Collar and Shoe technique, large plugs are mandatory to separate the cement from the mud. Both the plugs and any cement present in the casing should be drilled out. This particular technique is designed explicitly for the cementing of large diameter casings that are lowered using drill pipes. Due to the substantial volume displacement associated with these casings, significant attention must be paid during the cementing process.
Features of Float Collar and float Shoe:
- 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 4-1/2”-36”
- The Stab-in cement Float Shoe & Collar are also available with Double Valve and any combination.
Specification of Float Collar and float Shoe:
| Specification (in) | O.D.
(mm) | Total
Length | I.D.
(mm) | Min.Dia.
(mm) | Connection Type | Working Pressure |
| Float Collar | 5" | 141.3 | 500 | 110 | 50 | BTC/LTC/BCSG | 35 |
| 5 1/2" | 153.67 | 530 | 112 | 55 | BTC/LTC/BCSG | 35 |
| 7" | 194.46 | 586 | 162.5 | 77 | BTC/LTC/BCSG | 35 |
| 9 5/8" | 270 | 720 | 225 | 77 | BTC/LTC/BCSG | 35 |
| 13 3/8" | 365 | 720 | 319 | 77 | BTC/LTC/BCSG | 35 |
| 20" | 533.4 | 720 | 475 | 77 | BTC/LTC/BCSG | 35 |
Float
Shoe | 5" | 140.3 | 495 | 110 | 50 | BTC/LTC/BCSG | 35 |
| 5 1/2" | 153.67 | 514 | 112 | 55 | BTC/LTC/BCSG | 35 |
| 7" | 194.46 | 533 | 162.5 | 77 | BTC/LTC/BCSG | 35 |
| 9 5/8" | 269.88 | 550 | 225 | 77 | BTC/LTC/BCSG | 35 |
| 13 3/8" | 339.7 | 550 | 319 | 77 | BTC/LTC/BCSG | 35 |
| 20" | 534 | 652 | 475 | 77 | BTC/LTC/BCSG | 35 |
Company Information
Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. Our group have 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC.
We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001. Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.
