• TRUE-TAPER™

    TRUE-TAPER was developed in partnership with our steel suppliers to bring you an optimized coiled tubing string design. This is achieved by minimizing the number of bias welds in a tapered string and assuring that each bias weld be a gauge-to-gauge weld. Conventionally, tapered strings contained stress points at the bias weld juncture which were caused by non-uniform load transfer, but a TRUE-TAPER string achieves a linear taper by gradually varying the thickness of the flat steel strip over almost its entire length. This reduces stress concentrations, the number of bias welds and optimizes strength-to-weight ratio and safety factors.

    TRUE-TAPER is offered for QT-800 thru QT-1400 grades.
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    Description

    TRUE-TAPER was developed in partnership with our steel suppliers to bring you an optimized coiled tubing string design. This is achieved by minimizing the number of bias welds in a tapered string and assuring that each bias weld be a gauge-to-gauge weld. Conventionally, tapered strings contained stress points at the bias weld juncture which were caused by non-uniform load transfer, but a TRUE-TAPER string achieves a linear taper by gradually varying the thickness of the flat steel strip over almost its entire length. This reduces stress concentrations, the number of bias welds and optimizes strength-to-weight ratio and safety factors.

    TRUE-TAPER is offered for QT-800 thru QT-1400 grades.

    Features/Benefits

    • Taper achieved by gradually increasing master coil wall thickness during steel manufacturing process
    • Internal wall steps at the bias weld eliminated, producing a smoother ID
    • Welding similar gauge material eliminates stress concentrations
    • Higher usage to pipe in high-cycle and deviated well conditions due to fewer bias welds needed

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