Original
By certification 
Reaming shell
Impregnated and Surface Set Wireline Diamond Reaming Shells With BQ NQ HQ PQ
Roschen reaming shells are made with high-quality, synthetic and natural diamonds, embedded in a highly resistant matrix. They have additional protection made from friction-resistant tungsten carbide to maximize lifespan, and their maximum active surface helps to limit deviation.
Optimized choices:
Surface set reaming shells in all common DCDMA sizes are a stock item. Impregnated reaming shells and reaming shells in full hole profile are also available, but may require longer lead time.
Usage:
1. Available in all standard drilling sizes (A, B, N, H and P).
2. Combination of natural and synthetic diamonds embedded in sections
3. Ring completely covered with diamonds
4. Reliable material and advanced technology
Size Available as followings:
"Q" series: AQ, BQ, NQ, HQ, PQ
"TW" series: ATW BTW NTW HTW
DIAMOND BITS AND REAMING SHELLS:
Double-tube Core Bit and reaming shell |
36, 46, 56, 59, 60, 66, 75, 91, 110, 130 |
Single-tube Core Bit and Reaming Shell |
36, 46, 56, 59, 60, 66, 75, 91, 110, 130, 150, 173, 202, 225 |
Wireline Core Bit and Reaming Shell |
56, 59, 75, 91, 95, BQ, BQ3, NQ, NQ3, HQ, HQ3, PQ, PQ3 |
DIAMOND BITS AND REAMING SHELLS (DCDMA STANDARD):
Diamond Bit |
BQ, BQ3, NQ, NQ3, HQ, HQ3, PQ, PQ3, 36, 46, 56, 59, 60, 66, 75, 91, 110, 130 |
Diamond Reaming Shell |
BQ, BQ3, NQ, NQ3, HQ, HQ3, PQ, PQ3, 36, 46, 56, 59, 60, 66, 75, 91, 110, 130 |
STANDARD SET DIMENSIONS FOR DIAMOND CORE BITS AND REAMING SHELLS | ||||||||||||
Core Barrel Designation |
Core Bit |
Core Bit |
Reaming Shell |
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Outside Set Diameter |
Inside Set Diameter |
Set Diameter |
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Maximum |
Minimum |
Maximum |
Minimum |
Maximum |
Minimum |
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Inches |
mm |
Inches |
mm |
Inches |
mm |
Inches |
mm |
Inches |
mm |
Inches |
mm |
|
EWT(EXT) |
1.475 |
37.46 |
1.465 |
37.21 |
0.91 |
23.11 |
0.9 |
22.86 |
1.49 |
37.85 |
1.48 |
37.59 |
IEWS |
1.475 |
37.46 |
1.465 |
37.21 |
1 |
25.4 |
0.99 |
25.15 |
1.49 |
37.85 |
1.48 |
37.59 |
EWG |
1.475 |
37.46 |
1.465 |
37.21 |
0.85 |
21.59 |
0.84 |
21.34 |
1.49 |
37.85 |
1.48 |
37.592 |
AQ |
1.88 |
47.75 |
1.87 |
47.5 |
1.067 |
27.1 |
1.057 |
26.85 |
1.895 |
48.13 |
1.885 |
47.88 |
AQIK |
1.88 |
47.75 |
1.87 |
47.5 |
1.206 |
30.63 |
1.196 |
30.38 |
1.895 |
48.13 |
1.885 |
47.88 |
ATW(ADB-GM) |
1.88 |
47.75 |
1.87 |
47.5 |
1.198 |
30.43 |
1.188 |
30.18 |
1.895 |
48.13 |
1.885 |
47.88 |
AWT(AXT) |
1.88 |
47.75 |
1.87 |
47.5 |
1.286 |
32.66 |
1.276 |
32.41 |
1.895 |
48.13 |
1.885 |
47.88 |
ATK34(AW34) |
1.88 |
47.75 |
1.87 |
47.5 |
1.325 |
33.66 |
1.315 |
33.4 |
1.895 |
48.13 |
1.885 |
47.88 |
AXC(AWC3) |
1.895 |
48.13 |
1.855 |
47.88 |
1.067 |
27.1 |
1.057 |
26.85 |
1.895 |
48.13 |
1.885 |
47.88 |
JTK48/LTK48 |
1.88 |
47.75 |
1.87 |
47.5 |
1.394 |
35.41 |
1.384 |
35.15 |
1.895 |
48.13 |
1.885 |
47.88 |
BQ |
2.35 |
59.69 |
2.34 |
59.44 |
1.438 |
36.53 |
1.428 |
36.27 |
2.365 |
60.07 |
2.355 |
59.82 |
BQ3 |
2.35 |
59.69 |
2.34 |
59.44 |
1.325 |
33.65 |
1.315 |
33.4 |
2.365 |
60.07 |
2.355 |
59.82 |
BQTK |
2.35 |
59.69 |
2.34 |
59.44 |
1.606 |
40.79 |
1.596 |
40.54 |
2.365 |
60.07 |
2.355 |
59.82 |
BXB(BWC3) |
2.365 |
60.07 |
2.355 |
59.82 |
1.438 |
36.53 |
1.428 |
36.27 |
2.365 |
60.07 |
2.355 |
59.82 |
BWG(BX) |
2.35 |
59.69 |
2.34 |
59.44 |
1.659 |
42.14 |
1.649 |
41.88 |
2.365 |
60.07 |
2.355 |
59.82 |
NQ |
2.97 |
75,44 |
2.96 |
75.18 |
1.88 |
47.75 |
1.87 |
47.5 |
2.985 |
75.82 |
2.975 |
75.57 |
NQ2 |
2.97 |
75.44 |
2.96 |
75.18 |
2 |
50.8 |
1.99 |
50.65 |
2.985 |
75.82 |
2.975 |
75.57 |
NQ3/NQTT |
2.97 |
75.44 |
2.96 |
75.18 |
1.78 |
45.21 |
1.77 |
44.96 |
2.985 |
75.82 |
2.975 |
75.57 |
NWG(NX) |
2.97 |
75.44 |
2.96 |
75.18 |
2.16 |
54.86 |
2.15 |
54.61 |
2.985 |
75.82 |
2.975 |
75.57 |
NMLC |
2.97 |
75.44 |
2.96 |
75.18 |
2.052 |
52.12 |
2.042 |
51.87 |
2.985 |
75.82 |
2.975 |
75.57 |
HQ |
3.77 |
95.76 |
3.755 |
95.38 |
2.505 |
63.63 |
2.495 |
63.38 |
3.79 |
96.27 |
3.775 |
95.89 |
HQ3/HQTT |
3.77 |
95.76 |
3.755 |
95.38 |
2.411 |
61.24 |
2.401 |
60.99 |
3.79 |
96.27 |
3.775 |
95.89 |
PQ |
4.815 |
122.3 |
4.795 |
121.8 |
3.35 |
85.09 |
3.34 |
84.84 |
4.835 |
120.81 |
4.82 |
122.43 |
PQ3 |
4.815 |
122.3 |
4.795 |
121.8 |
3.275 |
83.19 |
3.265 |
82.93 |
4.835 |
122.81 |
4.82 |
122.43 |
TT46/LTK46 |
1.816 |
46.12 |
1.806 |
45.87 |
1.394 |
35.41 |
1.384 |
35.15 |
1.828 |
46.42 |
1.818 |
46.17 |
T2-46 |
1.816 |
46.12 |
1.806 |
45.87 |
1.253 |
31.82 |
1.243 |
31.56 |
1.828 |
46.42 |
1.818 |
46.17 |
T2-56 |
2.21 |
56.12 |
2.2 |
55.87 |
1.647 |
41.82 |
1.637 |
41.56 |
2.222 |
56.42 |
2.212 |
56.17 |
T2-66 |
2.603 |
66.12 |
2.593 |
65.87 |
2.04 |
51.82 |
2.03 |
51.56 |
2.615 |
66.42 |
2.605 |
66.17 |
T2-76 |
2.997 |
76.12 |
2.987 |
75.87 |
2.434 |
61.82 |
2.424 |
61.56 |
3.009 |
76.42 |
2.999 |
76.17 |
T2-86 |
3.391 |
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