Product Description
Petroleum Drill Collar
1.Standard: API Spec 7-1
2.Material: AISI 4145 H Modified Alloy Steel
3.Export Percentage: 95%
4.Supply Ability: 1000 pieces per month
5. Main Market: Middle East, North America, Europe
6. Delivery time: 10 days in stock, 30 days after advance payment
FACTORY DERICTLY!!
Generally Introduction:
Drill Collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. WEIGAO brand drill collars are manufactured strictly from API Spec7-1 and SY5411 standard.
Types of Drill Collar we offer:
1. Api spiral drill collar
2. Slick drill collar
3. Non-magnetic drill collar
Detailed Specification:
Technical specifications and parameters
| Drill Collar Number |
O.D. |
I.D. |
Length
(mm) |
Bevel Diameter |
Ref bend g Strength ratio |
| (mm) |
(in) |
(mm) |
(in) |
| NC23-31 |
79.4 |
3 1/8 |
31.8 |
1 1/2 |
9150 |
76.2 |
2.57:1 |
| NC26-35(2 3/8 IF) |
88.9 |
3 1/2 |
38.1 |
1 1/2 |
9150 |
82.9 |
2.42:1 |
| NC31-41(2 7/8 IF) |
104.8 |
4 1/8 |
50.8 |
2 |
9150 |
100.4 |
2.43:1 |
| NC35-47 |
120.6 |
4 3/4 |
50.8 |
2 |
9150 |
114.7 |
2.58:1 |
| NC38-50(3 1/2 IF) |
127.0 |
5 |
57.2 |
2 1/4 |
9150 |
121.0 |
2.38:1 |
| NC44-60 |
152.4 |
6 |
57.2 |
2 1/4 |
9150 & 9450 |
144.5 |
2.49:1 |
| NC44-60 |
152.4 |
6 |
71.4 |
2 13/16 |
9150 & 9450 |
144.5 |
2.84:1 |
| NC44-62 |
158.8 |
6 1/4 |
57.2 |
2 1/4 |
9150 & 9450 |
149.2 |
2.91:1 |
| NC46-62(4IF) |
158.8 |
6 1/4 |
71.4 |
2 13/16 |
9150 & 9450 |
150.0 |
2.63:1 |
| NC46-65(4IF) |
165.1 |
6 1/2 |
57.2 |
2 1/4 |
9150 & 9450 |
154.8 |
2.76:1 |
| NC46-65(4IF) |
165.1 |
6 1/2 |
71.4 |
2 13/16 |
9150 & 9450 |
154.8 |
3.05:1 |
| NC46-67(4IF) |
171.4 |
6 3/4 |
57.2 |
2 1/4 |
9150 & 9450 |
159.5 |
3.18:1 |
| NC50-67(4 1/2 IF) |
171.4 |
6 3/4 |
71.4 |
2 13/16 |
9150 & 9450 |
159.5 |
2.37:1 |
| NC50-70(4 1/2 IF) |
177.8 |
7 |
57.2 |
2 1/4 |
9150 & 9450 |
164.7 |
2.54:1 |
| NC50-70(4 1/2 IF) |
177.8 |
7 |
71.4 |
2 13/16 |
9150 & 9450 |
164.7 |
2.73:1 |
| NC50-72(4 1/2 IF) |
184.2 |
7 1/4 |
71.4 |
2 13/16 |
9150 & 9450 |
169.5 |
3.12:1 |
| NC56-77 |
196.8 |
7 3/4 |
71.4 |
2 13/16 |
9150 & 9450 |
185.3 |
2.70:1 |
| NC56-80 |
203.2 |
8 |
71.4 |
2 13/16 |
9150 & 9450 |
190.1 |
3.02:1 |
| 6 5/8 REG |
209.6 |
8 1/4 |
71.4 |
2 13/16 |
9150 & 9450 |
195.7 |
2.93:1 |
| NC61-90 |
228.6 |
9 |
71.4 |
2 13/16 |
9150 & 9450 |
212.6 |
3.17:1 |
| 7 5/8 REG |
241.3 |
9 1/2 |
76.2 |
3 |
9150 & 9450 |
223.8 |
2.81:1 |
| NC70-97 |
247.6 |
9 3/4 |
76.2 |
3 |
9150 & 9450 |
232.8 |
2.57:1 |
| NC70-100 |
254 |
10 |
76.2 |
3 |
9150 & 9450 |
237.3 |
2.81:1 |
| 8 5/8 REG |
279.4 |
11 |
76.2 |
3 |
9150 & 9450 |
266.7 |
2.84:1 |
|
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