Drill Collar
分类: Drill Collar  发布时间: 2000-06-05 12:14 

Drill Collar
Drill Collar


1.Meeting to API7-1

2.OD:3 1/8",3 1/2",4 1/8",4 3/4",5",6",,6 1/4',6 1/2",6 3/4",7",7 1/4",7 3/4",8",8 1/4",9",10",11"

3.Length:5"-31"

4.Type: slick drill collar,spiral drill collar,spiral drill collar with elevator groove and slip groove and non-magnetic drill collar

5.Material:ANSI4137 ,4145H,4145HM alloy steel.

The Main Technical Specification of Drill Collar
O.D.
I.D.
Connections
inch
mm
inch
mm
4-1/8
104.78
2
2-1/4
50.80
57.15
NC31,NC35
NC35
4-3/4
120.65
2
2-1/4
50.80
57.15
NC35,
NC35,NC38(3 1/2IF)
6-1/4
158.75
2-1/4
2-13/16
57.15
71.44
NC46(4IF)
NC46(4IF)
6-1/2
165.1
2-1/4
2-13/16
57.15
71.44
NC46(4IF)
NC46(4IF)
7
177.8
2-1/4
2-13/16
57.15
71.44
NC50(4 1/2IF)
NC50(4 1/2IF)
8
203.2
2-13/16
3
71.44
76.20
6 5/8REG
6 5/8REG
9
228.6
2-13/16
3
71.44
76.20
7 5/8REG
7 5/8REG
9-1/2
241.3
3
76.20
7 5/8REG
10
254
3
76.20
NC70
11
275.4
3
76.20
NC77

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