钻铤主要用来给钻头提供钻压，使钻杆处于受拉状态，并以其较大的刚度扶正钻头保持井眼轨迹。牡石牌钻铤完全采用API 规范及SY5144标准生产。
技术参数
|
钻铤螺纹类型
|
外径
|
内径
|
长度 (mm)
|
|
NC23-31
|
mm
|
in
|
mm
|
in
|
|
|
NC26-35（23/8″IF）
|
79.4
|
3 1/8
|
31.8
|
11/4
|
9150
|
|
NC31- 41(27/8″IF)
|
88.9
|
3 1/2
|
38.1
|
11/2
|
9150
|
|
NC35-47
|
104.8
|
4 1/8
|
50.8
|
2
|
9150
|
|
NC38-50(31/2″IF)
|
120.7
|
4 3/4
|
50.8
|
2
|
9150
|
|
NC44-60
|
127.0
|
5
|
57.2
|
2 1/4
|
9150
|
|
NC44-60
|
152.4
|
6
|
57.2
|
2 1/4
|
9150 (or) 9450
|
|
NC44-62
|
152.4
|
6
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC46-62(4″IF)
|
158.8
|
6 1/4
|
57.2
|
21/4
|
9150 (or) 9450
|
|
NC46-65(4″IF)
|
158.8
|
6 1/4
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC46-67(4″IF)
|
165.1
|
6 1/2
|
57.2
|
2 13/16
|
9150 (or) 9450
|
|
N50-67(4 1/2″IF)
|
165.1
|
6 1/2
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC50-70(4 1/2″IF)
|
171.4
|
6 3/4
|
57.2
|
2 13/16
|
9150 (or) 9450
|
|
NC50-70(4 1/2″IF)
|
171.4
|
6 3/4
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC50-72(4 1/2″IF)
|
177.8
|
7
|
57.2
|
2 1/4
|
9150 (or) 9450
|
|
NC50-70(4 1/2″IF)
|
177.8
|
7
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC50-72(4 1/2″IF)
|
184.2
|
7 1/4
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC56-77
|
196.8
|
7 3/4
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC56-80
|
203.2
|
8
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
6 5/8″REG
|
209.6
|
8 1/4
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
NC61-90
|
228.6
|
9
|
71.4
|
2 13/16
|
9150 (or) 9450
|
|
7 5/8″REG
|
241.3
|
9 1/2
|
76.2
|
3
|
9150 (or) 9450
|
|
NC70-97
|
247.6
|
9 3/4
|
76.2
|
3
|
9150 (or) 9450
|
|
NC70-100
|
254.0
|
10
|
76.2
|
3
|
9150 (or) 9450
|
|
8 5/8″REG
|
279.4
|
11
|
76.2
|
3
|
9150 (or) 9450
|
收藏此信息
查看联系方式
