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Drill collar
Drill Collar
- Type:Drill collar
- CAS No:
- Qty in 20' FCL:
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Mechanical Performance (Drill Collar)
外径
屈服强度
Yidld strength
Rr0.2Mpa
抗拉强度
Ten sile strength
Rm Mpa
伸长率 A（%）
Elongation
布氏硬度 HB
Hardness
夏比冲击功 AKVJ
Impact Tese
mm
In inch
79.4-171.4
31/8-6 3/4
≥758
≥965
≥13
285-341
≥54
177.8-279.4
7-11
≥689
≥930
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Drill Collar soecifications
钻铤螺纹型号
Drill Collar thread Mode
外径outer diameter
内径 Diameter
长度 Length
台肩倒直径
Chijian diameter Chamfer
参考的弯曲强度比
Bending strength ratio
Dmm
in
mm
In
NC23-31
79.4
31/8
31.8
11/4
9150
76.2
2.57:1
NC31-41(23/8 IF)
88.9
31/2
38.1
11/2
9150
82.9
2.42:1
NC31-41(27/8 IF)
104.8
41/8
50.8
2
9150
100.4
2.43:1
NC35-47
120.7
43/4
50.8
2
9150
114.7
2.58:1
NC3850(31/2 IF)
127.0
5
57.2
21/4
9150
121.0
2.38:1
NC44-60
152.4
6
57.2
21/4
9150或9450
144.5
2.49:1
NC44-62
158.8
61/4
57.2
21/4
9150或9450
149.2
2.91:1
NC46-62(4 IF)
158.8
61/4
71.4
213/16
9150或9450
150.0
2.63:1
NC46-65(4 IF)
165.1
61/2
57.2
21/4
9150或9450
154.8
2.76:1
NC46-65(4 IF)
165.1
61/2
71.4
213/16
9150或9450
154.8
3.05:1
NC46-67(4 IF)
171.4
63/4
57.2
21/4
9150或9450
159.5
3.18:1
NC50-67(41/2 IF)
171.4
63/4
71.4
213/16
9150或9450
159.5
2.37:1
NC50-70(41/2 IF)
177.8
7
57.2
21/4
9150或9450
164.7
2.54:1
NC50-70(41/2 IF)
177.8
7
71.4
213/16
9150或9450
164.7
2.73:1
NC50-72(41/2 IF)
184.2
71/4
71.4
213/16
9150或9450
169.5
3.12:1
NC50-77
196.8
73/4
71.4
213/16
9150或9450
185.3
2.70:1
NC50-80
203.2
8
71.4
213/16
9150或9450
190.1
3.02:1
65/8 REG
209.6
81/4
71.4
213/16
9150或9450
195.7
2.93:1
NC61-90
228.6
9
71.4
213/16
9150或9450
212.7
3.17:1
75/8 REG
241.3
91/2
76.2
3
9150或9450
223.8
2.81:1
NC70-97
247.6
93/4
76.2
3
9150或9450
232.6
2.57:1
NC70-100
254.0
10
76.2
3
9150或9450
237.3
2.81:1
85/8 REG
279.4
11
76.2
3
9150或9450
266.7
2.84:1
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Stress thread connecting parts scattered trough
钻铤螺纹类型
Drill Collar screw type
内螺纹台肩面至后-牙长度±1.59mm
Thread shoulder after a tooth sur-face to the length of ±1.59mm
内螺纹圆柱段直径Dcb+0.40.-0mm
In the thread diameter of the cylinder Dcb +0.4,-0mm
内螺纹圆柱段后的锥孔锥度±20.83mm/m
Thread of the cylindrical hole taper cone ±20.83mm
内螺纹槽直径Dpc+0,+0-0.79mm
Thread of the cylindrical hole taper cone ±20.83mm
替代内螺纹台肩面至力分散槽长度Lpc+0-3.18mm
Thread alternative to the shoulder-length of the trough scattered LRG ±0-3.18mm
NC35
82.6
82.15
166.67
82.15
85.73
NC38(31/2 IF)
88.9
88.11
166.67
89.30
92.08
NC44
101.6
101.60
166.67
106.67
104.78
NC46(4IF)
101.6
106.76
166.67
109.93
104.78
NC50(41/2 IF)
101.6
117.76
166.67
120.65
104.78
NC56
114.3
121.84
250.00
134.14
117.48
NC61
127.0
132.95
250.00
149.25
130.18
NC70
139.7
152.00
250.00
171.05
142.88
65/8 REG
114.3
134.14
166.67
137.72
117.48
75/8 REG
120.7
133.35
250.00
162.72
123.83
85/8 REG
123.8
149.25
250.00
184.94
127.00
注：NC23、26、31与23/8 IF螺纹因壁薄而不带连接部应分散模槽
Note:NC23,26,31 and 23/8IF wall by thin thread connecting parts and without stress mode dispersion groove
