• uLtimate™ Connection Series

    Description

    The Grant Prideco™ uLtimate Connection Series is specifically designed to provide increased torque capacity.  This is achieved by using high strength materials and making-up the connection to a higher torque level.  Even at this higher make-up torque level, the fatigue-resistant thread form and cold-rolled thread roots increase fatigue life above that of standard GPDS™ and XT™ connections. The high strength properties of the uLtimate Series increase performance, and the ruggedness of these connections extends service life.

    Benefits

    • Increased torque capacity (+26%)
    • Approximately twice the relative fatigue resistance over standard GPDS™ and XT™ connections
    • Ruggedness of these connections extends service life

    Applications

     

    Shale Plays

    As horizontal hole sections have increased in length, so has the demand for a drill string with higher torsional capacity. uXT has been one of the key technologies that has resulted in the success of shale drilling programs by providing the increased drilling torque and hydraulic performance necessary to drill these extended horizontal sections.

    Extended Reach Wells

    Operators are now demanding even more torque to reach new targets. The uLtimate Series has enabled operators to expand the industry's drilling envelope. It has helped in successfully drilling world-class ultra-extended reach wells, including several world records.

     

    Features/Benefits

     

    High Strength Tool Joint 1.1High Strength Tool Joints
    These connections are designed to be threaded on 130 ksi Specified Minimum Yield Strength material to increase performance.
     Fatigue-Resistant Thread FormFatigue-Resistant Thread Form
    This proprietary feature reduces stress concentration in the connection, enhancing its fatigue resistance.
     Cold-Rolled Thread Roots 1.0 Cold-Rolled Thread Roots
    A standard cold roll process of the thread roots further enhances fatigue resistance.
     Interchangeability Interchangeability
    uLtimate Series connections are interchangeable with their GPDS and XT connection counterparts, so current inventories of tools and accessories can still be used.
      Xmark Benchmark Xmark™ Benchmark
    This proprietary refacing benchmark is placed on the external bevel of the connection, and serves as a 360º visual reference for misaligned refacing without the removal of thread protectors.
     Identification Groove Identification Groove
    This unique identification groove visually identifies the connection as an uLtimate Series connection.  It is remachined as part of the chase and face operation.

    Specifications

    uGPDS and uXT Drill Pipe Configurations

    Pipe ODNominal WeightGradeConnection Tool Joint OD Tool Joint ID Minimum MUT Maximum MUT
    (in)(lb/ft)   (in) (in) (ft-lb) (ft-lb)
    3.50013.30S135uGPDS 38 5.000 2.438 15500 21,700
    uXT 38 4.750 2.563 16900 23,700
    3.50015.50S135uGPDS 38 5.000 2.438 15500 21,700
    uXT 39 5.000 2.500 22700 31,700
    4.00014.00S135uGPDS 40 5.250 2.563 19400 27,200
    uXT 39 5.000 2.563 22100 30,900
    4.50016.60S135uGPDS 46 6.000 3.000 28700 40,100
    uXT 46 6.125 3.438 33100 46,300
    4.50020.00S135uGPDS 46 6.125 2.875 31400 43,700
    uXT 46 6.250 3.250 37900 53,000
    5.00019.50S135uGPDS 50 6.625 3.250 38500 53,900
    uXT 50 6.500 3.750 41600 58,300
    5.50021.90S135uGPDS 55 7.000 4.000 39100 54,800
    uXT 57 7.000 4.250 51000 71,400
    5.500247.00S135uGPDS 55 7.125 3.750 47300 66,300
    uXT 57 7.000 4.250 51000 71,400
    5.87523.40S135uGPDS 55 7.125 3.750 47300 66,300
    uXT 57 7.000 4.250 51000 71,400
    5.87526.30S135uGPDS 55 7.250 3.500 54900 76,900
    uXT 57 7.000 4.250 51000 71,400
    Configurations in the above table are torque optimized.
    Contact your Grant Prideco representative for hydraulic-optimized configurations and for further tool joint OD and ID combinations.

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