|
NON MAGNETIC DRILL COLLARS STANDARD
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Outside Diameter
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Bore Diameter
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Standard Connections
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|
inch
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mm
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inch
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mm
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|
3-1/2
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79.4
|
2-1/8
to 2-3/16
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54.0
to 55.6
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NC26,
NC 31
|
|
4-3/4
|
120.7
|
2-1/8
to 2-11/16
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54.0
to 68.3
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NC35,
NC38 (3 ½ IF)
|
|
5
|
127.0
|
2-1/8
to 2-13/16
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54.0
to 71.4
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NC38
(3 ½ IF), NC46 (4 IF)
|
|
6-3/4
|
171.5
|
2-1/4
to 3 1/4
|
57.2
to 82.6
|
NC46
(4 IF), NC50 (4 ½ IF)
|
|
7
|
177.8
|
2-1/4
to 3 1/4
|
57.2
to 82.6
|
NC46
(4 IF), NC50 (4 ½ IF)
|
|
8
|
203.2
|
2-1/4
to 3 1/4
|
57.2
to 82.6
|
6
5/8REG
|
|
8
1/4
|
210
|
2-1/4
to 3 1/4
|
57.2
to 82.6
|
6
5/8REG
|
|
9
|
228.6
|
2-1/4
to 3 1/4
|
57.2
to 82.6
|
7
5/8REG
|
|
9-1/2
|
241.3
|
2-1/4
to 3 1/4
|
57.2
to 82.6
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7
5/8REG
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Note
·
ODs and IDs other than those listed above are
available by special request.
·
Bored bars offered are for long product
application. Concentricity is according to API Spec 7.
·
All dimensional and mechanical specifications are
according to API Spec 7.
·
The
mechanical and magnetic properties of each Non-Magnetic Drill
Collar is tested and certified to be with the latest edition of API
spec 7 standards.
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