• eXtreme™ Torque (XT™) Connection

    Description

    The Grant Prideco™ eXtreme™ Torque (XT™) connection is a patented, high-performance, rotary-shouldered connection available for pipe sizes from 2 3/8" to 6 5/8". Incorporating a second-generation double shoulder design with a proprietary thread profile, these connections provide improved hydraulics and more torque than connections of comparable dimensions. XT connections often allow for the use of larger drill pipe for a given hole size while maintaining fishability, and serve as the market reference for deepwater and extended reach drilling. 

    Features/Benefits

    Proprietary Thread Profile  

     XT connections have a proprietary thread design with a larger root radius to maintain higher fatigue resistance than API connections, even at increased operational torque.  Cold-rolled threads further enhance their ability to resist fatigue.    

    Torque Optimized  

    The XT connection is designed to deliver a higher torque rating than first-generation double shoulder connections.  Even in a more streamlined configuration, XT provides 70% more torque than API connections of comparable dimensions.  This additional strength meets the required torque for drilling extended reach or in more performance-demanding environments. 

    Streamlined for Performance 

    The XT connection's increased torsional dimensional optimization more aligned with the pipe body torsional strength. It can be configured with a smaller OD and larger ID without sacrificing torsional capacity, which contributes to improved drill string hydraulics.  XT connections facilitate the use of larger drill pipe in a set hole size, such as 5 7/8" drill pipe with XT 57 in 8 1/2" hole size.  THis provides improved hydraulic efficienecy, better hole cleaning, and greater buckling strength without compromising torsional strength or fishability.  

    Benefits 

    • 40% more torque than HT™, 70% more torque than API
    • Improved hydraulics (up to 50% reduction of internal pressure loss)
    • Enhanced buckling resistance
    • True flush ID for better tool running

    Specifications

    XT Drill Pipe Configurations

    Pipe OD   Nominal Weight    Grade   Connection   Tool Joint OD   Tool Joint ID   Minimum MUT   Maximum MUT
    (in)   (lb/ft)   
     
      
       
     
      
       (in)   (in)   (ft-lb)   (ft-lb)
    3.5   13.30   S135   XT 38   4.750   2.563   15,600   18,800
    3.5   15.50   S135   XT 38   4.750   2.438   17,100   20,500
    4.0   14.0   S135   XT 39   4.875   2.563   18,500   22,200
    4.0   15.70   S135   XT 39   4.875   2.563   18,500   22,200
    4.5   16.60   S135   XT 46   6.250   3.250   35,000   42,000
    4.5   20.00   S135   XT 46   6.250   3.250   35,000   42,000
    5.0   19.50   S135   XT 50   6.500   3.750   38,400   46,100
    5.0   25.60   S135   XT 50   6.625   3.500   45,300   54,300
    5.5   21.90   S135   XT 54   6.625   4.000   41,600   49,900
    5.5   24.70   S135   XT 54   6.625   4.000   41,600   49,900
    5.875   23.40   S135   XT 57   7.000   4.250   47,100   56,500
    5.875   26.30   S135   XT 57   7.000   4.250   47,100   56,500
    6.625   25.20   S135   XT 69   8.500   5.250   83,400   100,100
    6.625   27.70   S135   XT 69   8.500   5.250   83,400   100,100

    Contact your Grant Prideco representative for further tool joint OD and ID configurations.

     

     

     

    Variations of XT Connections 

     XTF™  uXT™  XT-M™
    Improved Fatigue X  X   
    Higher Torque    X   
    Pressure Rated        X
    Interchangeability with XT X  X   

    Contact your Grant Prideco representative for more detailed information about our connection technologies. 

     

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