DT/DS High Torque Premium Connections

RDT DS38 and DT55 Premium Connection
For additional information on our Premium Connections - please click here to download our brochure.
RDT offers two types of high torque connections; our DT, which is our premium high torque connection and our DS, which is our premium double shoulder connection. Each provides a substantial increase in drilling safety and performance with enhanced torque capacity. With our DT product the torque capacity is 40% greater than standard API connections and our DS product is 30% greater for comparable size drill pipe. This enhanced torsional strength is ideal for use in today's aggressive drilling programs.

By maintaining higher torsional strengths than the standard API connection and using a larger than standard bore in the tool joint, improved flow rates can be obtained on both our DS and DT connections. When faced with tough downhole applications, using our DT/DS connections will improve hydraulics and maintain tool joint torsional strength without Decreasing the life of the connection, making it the perfect choice.

DT Tool Joint Connection Data*

Size OD In Conn. Type Outside Dia. In Inside Dia. In Torsional Yield Stregth ft-lb Tensile Yield Strength ft Make-up Torque ft-lb Pin Tong Space In Box Tong Space In
3-1/2" DT38 4-7/8 2-11/16 25,900 587,300 15,500 10 15.5
  DT38 4-7/8 2-9/16 29,400 649,200 17,700 10 15.5
  DT38 4-7/8 2-7/16 32,100 708,100 19,300 10 15.5
4 DT38 4-7/8 2-11/16 25,900 587,300 15,500 10 15.5
  DT38 4-7/8 2-9/16 29,400 649,200 17,700 10 15.5
  DT40 5-1/4 2-13/16 31,900 711,600 19,100 10 15
  DT40 5-1/4 2-11/16 35,900 776,400 21,500 9 15
  DT40 5-1/4 2-9/16 39,500 838,300 23,700 9 15
4-1/2 DT46 6-1/4 3-1/4 47,600 901,200 28,600 9 15
  DT46 6-1/4 3 57,700 1,048,400 34,600 9 15
  DT50 6-3/8 3-3/4 52,900 939,000 31,800 9 15
  DT50 6-3/8 3-1/2 65,700 1,109,900 39,400 9 15
5 DT50 6-5/8 3-3/4 53,300 939,100 32,000 9 15
  DT50 6-5/8 3-1/2 66,200 1,269,000 46,800 9 15
5-1/2 DT55 7-1/4 4 77,800 1,265,800 46,700 10 15
6-5/8 DT65 8 5 99,700 1m448m400 59,800 10 16
* This is only an example of out DT Connection size availability. Please contact your RDT sales representative for additional Tool Joint dimensions.

 

DS Tool Joint Connection Data*

Size OD In Conn. Type Outside Dia. In Inside Dia. In Torsional Yield Stregth ft-lb Tensile Yield Strength ft Make-up Torque ft-lb Pin Tong Space In Box Tong Space In
2-7/8 2-7/8 PAC DSI 3-1/4 1-1/2 8,800 273,000 5,200 10 12.5
3-1/2 DS38 4-7/8 2-9/16 25,700 649,200 15,400 10 12.5
  DS38 5 2-7/16 29,200 708,100 17,500 10 12.5
4 DS38 4-7/8 2-9/16 25,700 649,200 15,400 10 12.5
  DS40 5-1/4 2-11/16 32,700 776,400 19,600 9 12
  DS40 5-1/4 2-9/16 36,400 838,300 21,800 9 12
4-1/2 DS46 6-1/4 3-1/4 43,300 901,200 26,000 9 12
  DS46 6-1/4 3 53,400 1,048,400 32,000 9 12
5 DS50 6-5/8 3-1/2 60,400 1,110,200 36,200 9 12
5-1/2 DS55 7-1/4 4 74,700 1,292,500 44,800 10 12
6-5/8 DS65 8-1/4 4-7/8 60,400 1,596,400 64,900 10 13
* This is only an example of out DT Connection size availability. Please contact your RDT sales representative for additional Tool Joint dimensions.
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