or Call: 281-498-0171

Double Shoulder Tool Joint - DPDS

Double Shoulder:

The DP-Master Double Shoulder Connection (DS) enables Higher Performance than standard API connection. The connection is available in DS-26 through to DS-65 for 2 3/8” OD to 6 5/8” OD drill Pipe. The Double Shoulder provides enhanced Torsional Strength. It also enables the client to configure the connection geometry such as smaller OD and larger ID to allow for improved fishability and hydraulic efficiency without sacrificing torsional strength.

ADVANTAGES

  • Enhanced Torque capacity compared to API connections
  • Improved Hydraulic efficiency
  • Flush ID connection minimizing turbulence
  • More wear allowed on Tool Joint OD before downgrading
  • Interchangeable with API, DSTJ and GPDS connections

API Standard Tool Joint

Double Shoulder Tool Joint

Nominal Size OD (mm) ID (mm) LPC (mm) C (mm) Vice Ledge Torque (ft lb) Main Ledge Torque (ft lb) Enhances the percentage (%)
NC26 3 3/8 1 3/4 3 2.668 2066 6875 30%
NC31 4 1/8 2 3 1/2 3.813 5020 13389 37%
4 3/8 1 5/8 3 1/2 3.183 7150 17170 42%
NC38 5 2 9/16 4 3.808 6428 20326 32%
5 2 7/16 4 3.808 7908 22213 36%
5 3 1/8 4 3.808 11174 26515 42%
NC40 5 3/8 2 7/16 4 1/2 4.072 11150 29930 37%
5 1/4 2 9/16 4 1/2 4.072 9623 17760 35%
5 1/2 2 1/4 4 1/2 4.072 13245 32943 40%
6 1/2 2 7/16 4 1/2 4.072 11150 30114 37%
NC46 6 3 1/4 4 1/2 4.626 10451 33625 31%
6 3 4 1/2 4.626 14898 39229 38%
6 1/4 3 4 1/2 4.626 14898 39659 38%
6 1/4 2 3/4 4 1/2 4.626 18860 44871 42%
6 1/4 2 1/2 4 1/2 4.626 22352 49630 45%
6 1/4 2 1/4 4 1/2 4.626 25389 53936 47%
NC50 6 5/8 3 3/4 4 1/2 5.042 10956 37676 29%
6 5/8 3 1/2 4 1/2 5.042 16678 44673 37%
6 5/8 3 1/4 4 1/2 5.042 21859 51447 42%
6 5/8 3 4 1/2 5.042 26513 57800 46%
6 5/8 2 3/4 4 1/2 5.042 30656 63406 48%
5 1/2FH 7 3 3/4 5 5.591 25185 60338 42%
7 3 1/2 5 5.591 31214 60338 52%
7 1/4 3 1/2 5 5.591 29000 72480 41%
7 1/4 3 1/4 5 5.591 36672 76156 48%
7 1/2 3 5 5.591 41571 87341 48%

Contact Downhole Pipe - (281) 498-0172 (be sure to tell them you visited Texas Drilling Tools!)

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