Secondary Seal

Description

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. 

Features

  • 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

Specifications

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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