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| Horizontal Technology, Inc. provides only the best, newly manufactured rock bits designed for the unique rigorous conditions of HDD. No re-tips or re-circulated product, ever. |
| CROSS REFERENCE CHART |
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IADC
Code |
Formation |
Varel |
Reed |
Hughes
Christensen |
Smith |
Security |
| 437 |
Soft |
V437 |
HP43A |
ATJ11 |
F1 |
S82F |
| 447 |
Soft |
V447 |
HP51 |
AT11C |
--- |
S82DF |
| 517 |
Soft to Medium |
V517 |
HP51X |
ATJ11H |
F15 |
--- |
| 517 |
Soft to Medium |
V517C |
HP51A |
ATJ22 |
F2 |
S84F |
| 527 |
Medium |
V527 |
HP52 |
AT22C |
F27 |
S85CF |
| 537 |
Medium |
V537 |
HP53A |
AT33 |
F3 |
S86F |
| 547 |
Medium |
ETD38 |
HP54 |
ATJ33C |
F37 |
S88CF |
| 547 |
Medium |
ETD38G |
--- |
ATJ35C |
--- |
--- |
| 617 |
Medium to Hard |
ETD44 |
HP61A |
ATJ44 |
F4/F45 |
M84F |
| 617 |
Medium to Hard |
V617 |
--- |
ATJ44A |
--- |
--- |
| 627 |
Medium to Hard |
ETD45 |
HP62 |
ATJ44C |
F47 |
M88 |
| 627 |
Medium to Hard |
V627 |
HP62A |
ATJ55R |
F5 |
M89FT |
| 627 |
Medium to Hard |
--- |
HP62-JA |
ATJ44A |
F47 |
M88 |
| 637 |
Hard |
ETD55 |
HP63 |
ATJ55 |
F57 |
M89F |
| 737 |
Hard |
ETD85 |
HP73 |
ATJ77 |
F7 |
H87F |
| 837 |
Extremely Hard |
ETD95 |
HP83 |
ATJ99 |
F9 |
H100F |
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| HDD BIT SPECIFICATIONS |
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| Size Range |
Milled Tooth |
Tungsten Carbide |
API Connection |
Makeup Torque FT.-Lbs. |
| Inches |
Millimeters |
Lbs. |
Kg. |
Lbs. |
Kb |
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| 4 1/2 |
114 |
9 |
4.1 |
11 |
5 |
2 3/8 REG |
3,000-3,500 |
| 4 3/4 |
121 |
14 |
6.4 |
16 |
7.3 |
2 7/8 REG |
6,000-7,000 |
| 6 1/8-6 1/2 |
143/165 |
27 |
12.3 |
35 |
15.9 |
3 1/2 REG |
7,000-9,000 |
| 7 7/8 |
200 |
74 |
32.7 |
82 |
36.3 |
4 1/2 REG |
12,000-16,000 |
| 8 1/2-8 3/4 |
216-229 |
78 |
35.4 |
90 |
40.8 |
4 1/2 REG |
12,000-16,000 |
| 9 7/8 |
251 |
135 |
61.2 |
150 |
68 |
6 5/8 REG |
28,000-32,000 |
| 10 5/8 |
270 |
160 |
72.6 |
180 |
81.6 |
6 5/8 REG |
28,000-32,000 |
| 12 1/4 |
311 |
210 |
95.3 |
235 |
106.6 |
6 5/8 REG |
28,000-32,000 |
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| ABOUT CARBIDE INSERTS |
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| SOFT |
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Long extension chisel. Shaped carbide inserts |
Aggressive design for ultra-soft formations to achieve high penetration rates with minimum down pressure. |
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Long extension conical. Shaped carbide inserts |
| MEDIUM |
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Short extension chisel. Shaped carbide inserts |
Chisel shaped inserts on inner rows with gage shape variations from chisel to dome to resist gage rounding through the medium formation range. Extensions calculated for high penetration rates with maximum resistance to breakage. |
| MED./HARD |
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Short extension conical. Shaped carbide inserts |
Conical shaped inserts on inner rows with gage variations from conical to dome for abrasive formations requiring maximum pressures. Optimum insert design for high penetrations rates in formations with high compressive strengths. |
| HARD |
 |
Round-top (Dome). Shaped carbide inserts |
Dome shaped inserts throughout for hard to extra-hard formations where heavy drilling weights are necessary. Optimum insert design and spacing for maximum resistance to abrasion and insert breakage. |
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