Bit Torque Recommendations

*Mark of Schlumberger. Copyright 2012 Schlumberger. All rights reserved. 12-BT-0021

While the information presented herein is believed to be accurate, it is provided as is without express or implied warranty.

API Connection Bit Size OD, in

Minimum Torque, ft.lbf

Normal Torque, ft.lbf

Maximum Torque, ft.lbf

Line Pull, ft.lbf3.5-ft Tong 4-ft Tong 4.2-ft Tong 4.5-ft Tong 5-ft Tong

2 38 Reg 3 1,970 2,280 2,450 651 570 543 507 4563 18 2,660 3,100 3,300 886 775 738 689 6203 1/4 3,400 3,950 4,200 1,129 988 940 878 790

2 78 Reg 3 1/2 3,380 3,950 4,200 1,129 988 940 878 7903 3/4 5,080 5,900 6,300 1,686 1,475 1,405 1,311 1,180

3 1/2 Reg 4 18 5,700 6,600 7,000 1,886 1,650 1,571 1,467 1,3204 1/4 6,940 8,050 8,550 2,300 2,013 1,917 1,789 1,6104 1/4 8,400 9,850 10,500 2,814 2,463 2,345 2,189 1,970

3 1/2 IF 4 3/4 10,000 11,000 3,143 2,750 2,619 2,444 2,2004 1/2 Reg 5 1/2 13,700 16,000 17,000 4,571 4,000 3,810 3,556 3,200

5 3/4 18,100 21,100 22,400 6,029 5,275 5,024 4,689 4,2206 18,550 21,600 22,900 6,171 5,400 5,143 4,800 4,320

4 1/2 IF 6 1/2 30,000 32,000 9,143 8,000 7,619 7,111 6,4006 58 Reg 7 1/2 40,670 47,300 50,200 13,514 11,825 11,262 10,511 9,460

7 3/4 41,050 47,800 50,750 13,657 11,950 11,381 10,622 9,5607 58 Reg 8 1/2 53,100 61,850 65,670 17,671 15,463 14,726 13,744 12,370

8 3/4 63,500 73,750 78,300 21,071 18,438 17,560 16,389 14,7509 68,600 79,800 84,750 22,800 19,950 19,000 17,733 15,960

8 58 Reg 10 96,170 102,600 108,950 29,314 25,650 24,429 22,800 20,52010 107,580 114,700 121,800 32,771 28,675 27,310 25,489 22,940

API Connection Bit Size OD, in

Recommended Torque, ft.lbf [N.m]

Line pull, ft.lbf3.5-ft Tong 4-ft Tong 4.2-ft Tong 4.5-ft Tong 5-ft Tong

2 38 PAC 2 78 4,380 [5,950] 1,251 1,095 1,043 973 8762 38 Reg 3 38 2,900 [3,950] 829 725 690 644 5803 1/2 Reg 4 3/4 9,100 [12,300] 2,600 2,275 2,167 2,022 1,8203 1/2 Reg 5 9,500 [12,900] 2,714 2,375 2,262 2,111 1,9004 1/2 Reg 6 58 19,200 [26,000] 5,486 4,800 4,571 4,267 3,8404 1/2 Reg 7 1/4 17,000 [23,050] 4,857 4,250 4,048 3,778 3,4006 58 Reg 7 1/4 44,400 [84,000] 12,686 11,100 10,571 9,867 8,8806 58 Reg 9 1/2 37,000 [50,000] 10,571 9,250 8,810 8,222 7,4007 58 Reg 9 1/2 73,000 [99,000] 20,857 18,250 17,381 16,222 14,600

API Connection Bit Size OD, in

Recommended Torque, ft.lbf [N.m]

Line Pull, ft.lbf3.5-ft Tong 4-ft Tong 4.2-ft Tong 4.5-ft Tong 5-ft Tong

2 38 Reg 3 1/24 1/2 3,0003,500 [4,0004,800] 1,000 875 833 778 7002 78 Reg 4 585 4,5005,500 [6,0007,000] 1,571 1,750 1,667 1,556 1,4003 1/2 Reg 5 187 38 7,0009,000 [9,50012,000] 2,571 2,250 2,143 2,000 1,8004 1/2 Reg 7 1/29 12,00016,000 [16,00022,000] 4,571 4,000 3,810 3,556 3,2006 58 Reg 9 1/228 28,00032,000 [38,00043,000] 9,143 7,619 7,619 7,111 6,4006 58 Reg or 7 58 Reg 14 3/428 34,00040,000 [46,00054,000] 11,429 10,000 9,524 8,889 8,0007 58 Reg or 8 58 Reg 18 1/228 40,00060,000 [54,00081,000] 17,143 15,000 14,286 13,333 12,000

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