Drill Collar
Stand size and thread connection
|
OD |
ID |
Length mm |
Chamfer Diameter mm |
Thread Connection |
Blending Ration |
||
|
In |
mm |
in |
mm |
||||
|
3-1/8 |
79.4 |
1-1/4 |
31.8 |
9150 |
76.2 |
NC23-31 |
2.57:1 |
|
3-1/2 |
88.9 |
1-1/2 |
38.1 |
9150 |
82.9 |
NC26-35(238 ID) |
2.42:1 |
|
4-1/8 |
104.8 |
2 |
50.8 |
9150 |
100.4 |
NC31-41(278 IF) |
2.43:1 |
|
4-3/4 |
120.7 |
2 |
50.8 |
9150 |
114.7 |
NC35-47 |
2.58:1 |
|
5 |
127 |
2-1/4 |
57.2 |
9150 |
121.0 |
NC38-50(312 IF) |
2.38:1 |
|
6 |
152.4 |
2-1/4 |
57.2 |
9150 or 9450 |
144.5 |
NC44-60 |
2.49:1 |
|
6 |
152.4 |
2 |
71.4 |
9150 or 9450 |
144.5 |
NC44-60 |
2.84:1 |
|
6-1/4 |
158.8 |
2-1/4 |
57.2 |
9150 or 9450 |
149.2 |
NC44-62 |
2.91:1 |
|
6-1/4 |
158.8 |
2-13/16 |
71.4 |
9150 or 9450 |
150.0 |
NC44-62(4IF) |
2.63:1 |
|
6-1/2 |
165.1 |
2-1/4 |
57.2 |
9150 or 9450 |
154.8 |
NC44-65(4IF) |
2.76:1 |
|
6-1/2 |
165.1 |
2-13/16 |
71.4 |
9150 or 9450 |
154.8 |
NC44-65(4IF) |
3.05:1 |
|
6-3/4 |
171.4 |
2-1/4 |
57.2 |
9150 or 9450 |
159.5 |
NC44-67(4IF) |
3.18:1 |
|
6-3/4 |
171.4 |
2-13/16 |
71.4 |
9150 or 9450 |
159.5 |
NC50-67(412 IF) |
2.37:1 |
|
7 |
177.8 |
2-1/4 |
57.2 |
9150 or 9450 |
164.7 |
NC50-70(412 IF) |
2.54:1 |
|
7 |
177.8 |
2-13/16 |
71.4 |
9150 or 9450 |
164.7 |
NC50-70(412 IF) |
2.73:1 |
|
7-1/4 |
184.2 |
2-13/16 |
71.4 |
9150 or 9450 |
169.5 |
NC50-72(412 IF) |
3.12:1 |
|
7-3/4 |
196.8 |
2-13/16 |
71.4 |
9150 or 9450 |
185.3 |
NC56-77 |
2.70:1 |
|
8 |
203.2 |
2-13/16 |
71.4 |
9150 or 9450 |
190.1 |
NC56-80 |
3.02:1 |
|
8-1/4 |
209.6 |
2-13/16 |
71.4 |
9150 or 9450 |
195.7 |
658 REG |
2.93:1 |
|
9 |
228.6 |
2-13/16 |
71.4 |
9150 or 9450 |
212.7 |
NC61-90 |
3.17:1 |
|
9-1/2 |
241.3 |
3 |
76.2 |
9150 or 9450 |
223.8 |
758 REG |
2.81:1 |
|
9-3/4 |
247.6 |
3 |
76.2 |
9150 or 9450 |
232.6 |
NC70-97 |
2.57:1 |
|
10 |
254 |
3 |
76.2 |
9150 or 9450 |
237.3 |
NC70-100 |
2.81:1 |
|
11 |
279.4 |
3 |
76.2 |
9150 or 9450 |
266.7 |
858 REG |
2.84:1 |
Spiral Type
Be Made of alloy steel and the outside pipe has spiral grooves.
|
OD |
Yield Strength Mpa |
Tensile Strength Mpa |
Elongation% |
Brinell Hardness HB |
Impact APV J |
|
|
mm |
in |
|||||
|
79.4-171.4 |
3 1/8-6 3/4 |
≥758 |
≥965 |
≥13 |
285-341 |
≥54 |
|
177.8-279.4 |
7-11 |
≥689 |
≥930 |
≥13 |
285-341 |
≥54 |
NON一MAGNETIC DRILL COLLA RPROPERTY
Made of stainless alloy steel with rather low magnetic permeability and the cross sections
of the inside and outside pipe are both round
|
OD |
Yield Strength Mpa |
Tensile Strength Mpa |
Elongation% |
Brinell Hardness HB |
Impact APV J |
|
|
mm |
in |
|||||
|
79.4-171.4 |
3 1/8-6 3/4 |
≥758 |
≥827 |
≥18 |
- |
- |
|
177.6-279.4 |
7-11 |
≥689 |
≥758 |
≥20 |
- |
- |
