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      Products & services
      
                            
      
                        
      
                    
      
            
      
            
      
        
      
    
      


      
    
      
        
            
      
                
      

      Hilong Gas Sealed Connection
      


      

      

      Product Introduction
      

      


      

      HLDT-GS® can be used in Drill Stem Testing (DST) operation, hydraulic fracturing, well completion and underbalanced drilling with high metal-to-metal internal seal performance under gas pressure loading. Compared with the traditional single function drill string, using HLDT-GS® drill string can save time and reduce cost.
      

      

      

      

            
      



            
      
                
      

      Product Advantage
      


      

      Compared to API connections, HLDT-GS® has the following features:
      
·The use of double shouldered compound sealing structure allows the smooth transition of inner diameter, and smooth metal surface elastic interference fit achieves metal-to-metal seal.
      
·Seal integrity is not affected by tensile load and multiple drilling trips.
      

      

      

            
      


            
      
                
      

      Product Specification
      


      

      HLDT-GS®26, HLDT-GS®31, HLDT-GS®38, HLDT-GS®40, HLDT-GS®46, HLDT-GS®50, HLDT-GS®55 and HLDT-GS®65, the sealing structure can be applied to API Spec 7-2 and non-API rotary shouldered connections.
      

      

      

            
      

            
      
                
      

      Product Performance
      


      

      Good sealing performance, gas sealing capacity up to 15000 PSI (105MPa).