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Shock-Subs

Reducing Impacts for smooth operations, controls vibration levels, and extends BHA life.

       

Industry leaders

Dynomax is a supplier of leading performance drilling products engineered for the oil and gas industry.
Whether performing through normal, deviated or deep wells, your drill string assembly must withstand extreme conditions including torsional vibration, axial oscillations/loads and drill string harmonics.

Dynomax Shock Subs are designed for a wide range of drilling environments and extreme conditions. Shock Subs improve the life and durability of your drill string assembly, improving online efficiency and reducing operating costs.

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DYNOMAX SHOCK SUBS E BROCHURE Download PDF


Technical Specifications

CONFIG TOOL OD [in] TOOL ID [in] LENGTH [ft] WEIGHT [lb] AXIAL LOAD CAPACITY [lb] ABSOLUTE OVERPULL [lb] ABSOLUTE TORSIONAL LOAD [ft-lb] PUMP OPEN AREA [in²] SPRING RATE [lb/in] OPENING TRAVEL [in] CLOSING TRAVEL [in]
2 ⅞" 2.88 0.88 4.5 74 8,400 130,600 3,100 2.49 8,000 0.89 0.90
3 ⅛" 3.13 1.00 5.2 106 10,700 207,500 5,000 2.80 9,000 1.01 1.01
3 ¾" 3.75 1.25 7.2 197 10,550 243,200 7,400 4.69 6,000 0.96 1.50
4 ¾" 4.75 1.75 8.1 365 29,650 323,100 12,200 7.22 14,000 0.96 1.81
5" 5 1.75 8.1 408 29,650 406,800 20,500 7.22 14,000 0.98 1.81
6 ½" 6.5 2.50 9.6 781 55,150 728,500 39,100 14.73 23,900 1.46 1.98
6 ½" LT 6.5 2.50 9.6 780 30,950 728,500 39,100 14.73 8,600 1.46 3.08
6 ¾" 6.75 2.50 9.6 835 55,150 728,500 39,400 14.73 23,900 1.46 1.98
6 ¾" LT 6.75 2.50 9.6 835 30,950 728,500 39,400 14.73 8,600 1.46 3.08
8" 8 2.81 11.2 1,340 86,850 725,300 49,900 24.58 28,000 1.46 2.65
8" LT 8 2.81 12.2 1,339 39,050 725,300 49,900 24.58 10,000 1.46 3.31
9 ½" 9.5 3.00 13.8 2,466 143,050 1,439,800 109,500 34.33 33,850 2.39 3.60
9 ½" LT 9.5 3.00 13.8 2,473 74,100 1,439,800 109,500 34.33 18,400 2.39 3.43
11 ¼" 11.25 3.50 15.3 3,796 192,000 2,776,300 160,100 43.96 36,350 2.36 4.51
12" 12 3.25 13.3 3,841 100,000 2,176,700 156,200 48.45 25,159 2 3.40
14" 14 3.25 15.0 5,934 140,450 3,288,400  184,500 66.37 27,000 3 4.43



CONFIG TOOL OD [mm] TOOL ID [mm] LENGTH [m] WEIGHT [kg] AXIAL LOAD CAPACITY [daN] ABSOLUTE OVERPULL [daN] ABSOLUTE TORSIONAL LOAD [Nm] PUMP OPEN AREA [cm²] SPRING RATE [N/mm] OPENING TRAVEL [mm] CLOSING TRAVEL [mm]
2 ⅞" 73 22 1.37 34 3,737 58,094 4,203 16.1 1,401 23 23
3 ⅛" 80 25 1.58 48 4,760 92,301 6,779 18.1 1,576 26 26
3 ¾" 95 32 2.19 89 4,693 108,181 10,033 30.3 1,051 24 38
4 ¾" 121 44 2.47 166 13,189 143,722 16,541 46.6 2,452 24 46
5" 127 44 2.47 185 13,189 180,954 27,794 46.6 2,452 25 46
6 ½" 165 64 2.93 354 24,532 324,053 53,013 95 4,186  37 50
6 ½" LT 165 64 2.93 354 13,767 324,053 53,013 95 1,506 37 78
6 ¾" 171 64 2.93 379 24,532 324,053 53,419 95 4,186 37 50
6 ¾" LT 171 64 2.93 379 13,767 324,053 53,419 95 1,506 37 78
8" 203 71 3.41 608 38,633 322,630 67,656 158.6 4,904 37 67
8" LT 203 71 3.72 607 17,370 322,630 67,656 158.6 1,751 37 84
9 ½" 241 76 4.21 1119 63,632 640,455 148,462 221.5 5,928 61 91
9 ½" LT 241 76 4.21 1122 32,961 640,455 148,462 221.5 3,222 61 87
11 ¼"  286 89 4.66 1722 85,406 1,234,960 217,067 283.6 6,366 60 115
12" 305 83 4.05 1742 44,482 968,244 211,779 312.6 4,406 51 86
14" 356 83 4.57 2692 62,475 1,462,753 250,149 428.2 4,728 76
113



Benefits


  • Significant vibration absorption.
  • Reduction of drill string harmonics.
  • Smoother and faster drilling downhole.
  • Longer bit life.
  • Protect instruments and body connections.
  • Increased Tool bearing life.


Features 


  • Robust Spline for Maximized Torsional Strength
  • Custom Spring Design for Optimized Stiffness and Load Capacity
  • Multiple Spring Configurations Available in Every Size
  • Engineered Coatings for Prolonged Seal Life
  • High Strength Housings for Enhanced Fatigue Resistance


Every Dynomax Shock Tool undergoes stringent performance tests, and we ensure that our testing, service and QA/QC programs meet or exceed any in the oilfield industry.



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