无磁钻铤
无磁钻铤是使用一种低碳高铬锰合金钢制成,它是经过严格的化学成分配比后精炼并通过锻造而达到其机械性能。具有良好的低磁导率、高强度的机械性能。
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无磁钻铤技术参数
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Non-magnetic Drill Collar
|
Thread
|
OD (inch)
|
ID (inch)
|
Length (mm)
|
Bevel OD (mm)
|
Bend & Strength Rate
|
NC23-31
|
3-1/8"
|
1-1/4"
|
9150
|
76.2
|
2.57:1
|
NC26-35
|
3-1/2"
|
1-1/2"
|
9150
|
82.9
|
2.42:1
|
NC31-41
|
4-1/8"
|
2"
|
9150
|
100.4
|
2.43:1
|
NC35-47
|
4-3/4"
|
2"
|
9150
|
114.7
|
2.58:1
|
NC38-50
|
5"
|
2-1/4"
|
9150
|
121
|
2.38:1
|
NC44-60
|
6"
|
2-1/4"
|
9150/9450
|
144.5
|
2.49:1
|
NC44-60
|
6"
|
2-13/16"
|
9150/9450
|
144.5
|
2.84:1
|
NC44-62
|
6-1/4"
|
2-1/4"
|
9150/9450
|
149.2
|
2.91:1
|
NC44-62
|
6-1/4"
|
2-13/16"
|
9150/9450
|
150
|
2.63:1
|
NC44-65
|
6-1/4"
|
2-1/4"
|
9150/9450
|
154.8
|
2.76:1
|
NC44-65
|
6-1/2"
|
2-13/16"
|
9150/9450
|
154.8
|
3.05:1
|
NC44-67
|
6-3/4"
|
2-1/4"
|
9150/9450
|
159.5
|
3.18:1
|
NC50-67
|
6-3/4"
|
2-13/16"
|
9150/9450
|
159.5
|
2.37:1
|
NC50-70
|
7"
|
2-1/4"
|
9150/9450
|
164.7
|
2.54:1
|
NC50-70
|
7"
|
2-13/16"
|
9150/9450
|
164.7
|
2.73:1
|
NC50-72
|
7-1/4"
|
2-13/16"
|
9150/9450
|
169.5
|
3.12:1
|
NC56-77
|
7-3/4"
|
2-13/16"
|
9150/9450
|
185.3
|
2.70:1
|
NC56-80
|
8"
|
2-13/16"
|
9150/9450
|
190.1
|
3.02:1
|
6-5/8"REG
|
8-1/4"
|
2-13/16"
|
9150/9450
|
195.7
|
2.93:1
|
NC61-90
|
9"
|
2-13/16"
|
9150/9450
|
212.7
|
3.171:1
|
7-5/8"REG
|
9-1/2"
|
3"
|
9150/9450
|
223.8
|
2.81:1
|
NC70-97
|
9-3/4"
|
3"
|
9150/9450
|
232.6
|
2.57:1
|
NC70-100
|
10"
|
3"
|
9150/9450
|
237.3
|
2.81:1
|
8-5/8"REG
|
11"
|
3"
|
9150/9450
|
266.7
|
2.84:1
|