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High purity stainless steel non-magnetic oil drilling collar , Drilling String
1.Product Description of non-magnetic drill collar
HYRD's non-magnetic drill collar are manufactured from integral non
magnetic alloy steel accroding to API spec7 and SY/T5144. All
thread can be phosphated, copperised or cold worked. All thread are
machined with CNC Lathes-double-shouldered and special thread.
Product: | oilfield API non-magnetic drill collar |
Size: | 3 1/8"-11" |
Delivery time: | 30 days after receive the deposit. |
Standard | API Spec 7-1 |
Payment Term: | 30% advance by TT; Balance pay against shipping documents or irrevocable LC at sight |
Magnetic Properties
MPS=(1×105/4π)A/m
Average: μr<1.010
2.Product Specification:
OD | ID | Length mm | Bevel Diamater | Bend strength | |||
mm | in | mm | in | ||||
79.4 | 3 1/8 | 31.8 | 1 1/4 | 9150 | 76.2 | 2.57:1 | |
88.9 | 3 1/2 | 38.1 | 1 1/2 | 9150 | 82.9 | 2.42:1 | |
104.8 | 4 1/8 | 50.8 | 2 | 9150 / 9450 | 100.4 | 2.43:1 | |
120.7 | 4 3/4 | 50.8 | 2 | 9150 / 9450 | 114.7 | 2.58:1 | |
127 | 5 | 57.2 | 2 1/4 | 9150 / 9450 | 121 | 2.38:1 | |
152.4 | 6 | 57.2 | 2 1/4 | 9150 / 9450 | 144.5 | 2.49:1 | |
152.4 | 6 | 71.4 | 2 13/16 | 9150 / 9450 | 145.5 | 2.84:1 | |
158.8 | 6 1/4 | 57.2 | 2 1/4 | 9150 / 9450 | 149.2 | 2.91:1 | |
158.8 | 6 1/4 | 71.4 | 2 13/16 | 9150 / 9450 | 150 | 2.63:1 | |
165.1 | 6 1/2 | 57.2 | 2 1/4 | 9150 / 9450 | 154.8 | 2.76:1 | |
165.1 | 6 1/2 | 71.4 | 2 13/16 | 9150 / 9450 | 154.8 | 3.05:1 | |
171.4 | 6 3/4 | 57.2 | 2 1/4 | 9150 / 9450 | 159.5 | 3.18:1 | |
171.4 | 6 3/4 | 71.4 | 2 13/16 | 9150 / 9450 | 159.5 | 2.37:1 | |
177.8 | 7 | 57.2 | 2 1/4 | 9150 / 9450 | 164.7 | 2.54:1 | |
177.8 | 7 | 71.4 | 2 13/16 | 9150 / 9450 | 164.7 | 2.73:1 | |
184.2 | 7 1/4 | 71.4 | 2 13/16 | 9150 / 9450 | 169.5 | 3.12:1 | |
196.8 | 7 3/4 | 71.4 | 2 13/16 | 9150 / 9450 | 185.3 | 2.70:1 | |
203.2 | 8 | 71.4 | 2 13/16 | 9150 / 9450 | 190.1 | 3.02:1 | |
209.6 | 8 1/4 | 71.4 | 2 13/16 | 9150 / 9450 | 195.7 | 2.93:1 | |
228.6 | 9 | 71.4 | 2 13/16 | 9150 / 9450 | 212.7 | 3.17:1 | |
241.3 | 9 1/2 | 76.2 | 3 | 9150 / 9450 | 223.8 | 2.81:1 | |
247.6 | 9 3/4 | 76.2 | 3 | 9150 / 9450 | 232.6 | 2.57:1 | |
254 | 10 | 76.2 | 3 | 9150 / 9450 | 237.3 | 2.81:1 | |
279.4 | 11 | 76.2 | 3 | 9150 / 9450 | 266.7 | 2.84:1 |
3:Spiral grooving:
Size OD | Depth of Cut | Spirals | Direction | Pitch | Type |
3 1/8" - 5" | 7/32 ± 1/32 | 3 | R.H. | 38±1 | A |
6" - 6 1/4" | 9/32 ± 1/18 | 3 | R.H. | 42±1 | A |
6 1/2" - 6 3/4" | 5/18 ± 1/18 | 3 | R.H. | 46±1 | A |
7" | 5/18 ± 1/18 | 3 | R.H. | 64±1 | A |
7 1/4" - 7 3/4" | 11/32 ± 1/18 | 3 | R.H. | 64±1 | B |
8" - 8 1/4" | 3/8 ± 1/18 | 3 | R.H. | 68±1 | B |
9" - 9 3/4" | 13/32 ± 3/32 | 3 | R.H. | 72±1 | B |
10" | 7/18 ± 3/32 | 3 | R.H. | 76±1 | B |
11" | 15/32 ± 3/32 | 3 | R.H. | 80±1 | B |