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MAGNETIC DRILL COLLAR

  • Slick and Spiral Drill Collars
    according to API Spec 7-1
  • NS1 and DS1 properties
  • 4145H Material. Hot Rolled
  • Stress Reflief Groove
  • SRG on PIN
  • Bore Back on Box
  • Connections Phospatized
  • Cold Roll on Threads to improve
    fatigue resistance
  • Thread Protectors
  • Pony Drill Collar available

NON MAGNETIC DRILL COLLAR

  • Drill Collars are made from high purity
    austenitic stainless steel.
  • Low & High Yield Material available
  • Advanced chemical composition control system and special forging process guarantee the excellent mechanical properties, corrosion
    resistant performance and high fatigue resistance of our Non- Magnetic material.
  • Shoot Peening on Connections.

DRILL COLLARS SIZES

Item OD
(IN)		 ID
(IN)		 LG
(ft)		 Conexión
Preffered		 Conexión
(Other)		 Recommended
Make-Up Torque ft-lbs		 Torsional Strength ft-lbs Bending Strenght Ratio (BSR) Weight Slick
(kg)		 Weight Spiral
(kg)
1 3 1/8 1 1/4 31 NC 23 3.300 5.860 2.57:1 306 NA
2 3 1/2 1 1/2 31 NC 26 2 3/8 IF 4.600 8.100 2.42:1 372 NA
3 4 1/8 2 31 NC 31 2 7/8 IF 6.900 12.100 2.44:1 485 458
4 4 3/4 2 31 NC 35 10.800 19.100 2.58:1 689 653
5 4 3/4 2 31 NC 38 3 1/2 IF 9.990 17.600 1.80:1 689 653
6 4 3/4 2 1/4 31 NC 38 3 1/2 IF 9.990 17.600 1.92:1 649 617
7 4 3/4 2 1/4 31 NC 35 9.200 16.200 2.82:1 649 617
8 4 3/4 2 1/2 31 NC 38 3 1/2 IF 9.990 17.600 2.10:1 608 572
9 5 2 31 NC 38 3 1/2 IF 12.900 22.700 2.24:1 752 790
10 5 2 1/4 31 NC 38 3 1/2 IF 12.900 22.700 2.38:1 739 703
11 5 1/4 2 1/4 31 NC 38 3 1/2 IF 12.900 22.700 2.88:1 835 789
12 5 3/4 2 1/4 31 NC 46 4 IF 17.700 31.200 1.68:1 1.039 993
13 5 3/4 2 1/4 31 NC 40 4 FH 17.000 30.000 3.04:1 1.039 993
14 6 2 1/4 31 NC 46 4 IF 23.400 41.200 2.02:1 1.148 1.093
15 6 2 13/16 31 NC 46 4 IF 22.400 39.500 2.24:1 1.043 984
16 6 1/4 2 1/4 31 NC 46 4 IF 28.000 49.300 2.38:1 1.261 1.202
17 6 1/4 2 13/16 31 NC 46 4 IF 22.400 39.500 2.64:1 1.157 1.098
18 6 1/4 2 13/16 31 NC 50 4 1/2 IF 23.000 40.500 1.71:1 1.157 1.098
19 6 1/2 2 1/4 31 NC 46 4 IF 28.000 49.300 2.77:1 1.379 1.311
20 6 1/2 2 1/4 31 NC 50 4 1/2 IF 29.700 52.200 1.89:1 1.379 1.311
21 6 1/2 2 13/16 31 NC 46 4 IF 22.400 39.500 3.07:1 1.275 1.207
22 6 1/2 2 13/16 31 NC 50 4 1/2 IF 29.700 52.200 2.03:1 1.275 1.207
23 6 3/4 2 1/4 31 NC 50 4 1/2 IF 36.700 64.700 2.21:1 1.501 1.433
24 6 3/4 2 1/2 31 NC 50 4 1/2 IF 35.800 63.000 2.26:1 1.456 1.388
25 6 3/4 2 1/2 31 NC 46 4 IF 35.800 63.000 2.26:1 1.356 1.430
26 6 3/4 2 3/4 31 NC 50 4 1/2 IF 32.300 56.800 2.37:1 1.397 1.324
27 6 3/4 2 13/16 31 NC 50 4 1/2 IF 32.300 56.800 2.37:1 1.397 1.324
28 7 2 1/4 31 NC 50 4 1/2 IF 38.400 61.400 2.54:1 1.628 1.538
29 7 2 1/2 31 NC 50 4 1/2 IF 35.800 57.300 2.61:1 1.588 1.492
30 7 2 13/16 31 NC 50 4 1/2 IF 32.300 51.600 2.73:1 1.524 1.429
31 7 2 13/16 31 5 1/2 FH 32.800 52.400 1.72:1 1.524 1.429
32 7 1/4 2 13/16 31 NC 50 4 1/2 IF 32.300 47.300 3.12:1 1.710 1.593
33 7 1/4 3 31 5 1/2 FH 41.000 49.600 2.05:1 1.665 1.551
34 7 3/4 2 13/16 31 6 5/8 REG 53.300 79.000 2.30:1 1.998 1.860
35 7 3/4 3 31 6 5/8 REG 50.700 78.500 2.35:1 1.955 1.778
36 8 2 13/16 31 6 5/8 REG 53.300 85.400 2.60:1 2.077 1.964
37 8 3 31 6 5/8 REG 50.700 81.100 2.66:1 2.037 1.923
38 8 1/4 2 13/16 31 6 5/8 REG 53.300 85.400 2.93:1 2.227 2.100
39 8 1/4 3 31 6 5/8 REG 50.700 81.100 2.99:1 2.186 2.059
40 8 1/2 2 1/4 31 6 5/8 REG 50.700 81.100 3.14:1 2.391 2.530
41 8 1/2 2 13/16 31 6 5/8 REG 53.300 85.400 3.27:1 2.381 2.250
42 8 1/2 3 31 6 5/8 REG 50.700 81.100 3.34:1 2.341 2.209
43 8 1/2 3 1/4 31 6 5/8 REG 46.900 75.100 3.46:1 2.286 2.155
44 9 2 13/16 31 7 5/8 REG 84.400 135.000 2.28:1 2.703 2.463
45 9 2 13/16 31 6 5/8 FH 84.000 134.000 2.41:1 2.708 2.468
46 9 3 31 7 5/8 REG 84.400 135.000 2.31:1 2.667 2.422
47 9 3 31 6 5/8 FH 81.100 130.000 2.44:1 2.667 2.422
48 9 3 1/2 31 6 5/8 FH 72.100 115.000 2.56:1 2.545 2.304
49 9 1/2 2 13/16 31 7 5/8 REG 91.600 147.000 2.78:1 3.048 2.799
50 9 1/2 3 31 7 5/8 REG 88.600 142.000 2.81:1 3.007 2.758
51 9 1/2 3   1/16 31 7 5/8 REG 87.500 140.000 2.83:1 2.994 2.744
52 9 3/4 3 31 7 5/8 REG 91.800 147.000 3.10:1 3.184 2.935
53 10 3 31 8 5/8 REG 109.000 175.000 1.98:1 3.366 3.084
54 11 3 31 8 5/8 REG 131.000 209.000 2.84:1 4.166 3.815