Secondary seals are used on casing head spools and between bottom of tubing head spool and casing. Available with various types, from which customers can select based on using habits, working pressure and maintenance needs.
Available with different sizes for wellhead spools to connect different casing sizes
Applicable for different pressure, temperature and corrosive working conditions
Rate pressure of single FS seals is 5,000 psi, double FS seals is 10,000 psi
Rate pressure of single P seals is 5,000 psi, double P seals is 15,000 psi
| PE/EBS Secondary Seals | ||||||||
|---|---|---|---|---|---|---|---|---|
| Casing size | Spool Nominal Bottom Pressure | |||||||
| 7" | 9" | 10 3/4" | 11 3/4" | |||||
| PE | EBS | PE | EBS | PE | EBS | PE | EBS | |
| 4 1/2" | 5,000 psi | 10,000 psi | 5,000 psi | 10,000 psi | ||||
| 5" | 5,000 psi | 10,000 psi | 5,000 psi | 10,000 psi | ||||
| 5 1/2" | 5,000 psi | 10,000 psi | ||||||
| 6 5/8" | 5,000 psi | 10,000 psi | ||||||
| 7" | 5,000 psi | 10,000 psi | 5,000 psi | 10,000 psi | ||||
| 7 5/8" | 5,000 psi | 5,000 psi | 10,000 psi | |||||
| 8 5/8" | 5,000 psi | 10,000 psi | ||||||
| 9 5/8" | 5,000 psi | 10,000 psi | ||||||
| R-Bushing Secondary Seals | ||||
|---|---|---|---|---|
| Casing size | Spool Nominal Bottom Pressure | |||
| 7" | 9 5/8" | 10 3/4" | 13 3/8" | |
| 4 1/2" | 10,000 psi | 10,000 psi | ||
| 5" | 10,000 psi | 10,000 psi | ||
| 5 1/2" | 10,000 psi | |||
| 6 5/8" | 10,000 psi | |||
| 7" | 10,000 psi | 10,000 psi | ||
| 7 5/8" | 10,000 psi | 10,000 psi | ||
| 8 5/8" | 10,000 psi | 10,000 psi | ||
| 9 5/8" | 10,000 psi | 10,000 psi | ||
| 10 3/4" | 10,000 psi | |||
| 11 3/4" | 10,000 psi | |||
| CANH Secondary Seals | |||
|---|---|---|---|
| Casing size | Spool Nominal Bottom Pressure | ||
| 9" | 11" | 13 5/8" | |
| 4 1/2" | 20,000 psi | 20,000 psi | |
| 5" | 20,000 psi | 20,000 psi | |
| 5 1/2" | 20,000 psi | 20,000 psi | |
| 6 5/8" | 20,000 psi | ||
| 7" | 20,000 psi | 20,000 psi | |
| 7 5/8" | 20,000 psi | 20,000 psi | |
| 8 5/8" | 20,000 psi | 20,000 psi | |
| 9 5/8" | 20,000 psi | ||
| 10 3/4" | 20,000 psi | ||
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