 |
Xi’an Chancemate Petroleum Mechanical Co.,Ltd |
||||
Tel: +0086-29-8313124
Fax: +0086-29-8313124
E-mail: sales1@chancematewellcontrol.com
Add: No.105 Dongguan South Street,Beilin District, Xi’an City, Shaanxi Province,China
Skype: chancematewellcontrol
Drill collar is the most important parts of all drilling string elements. We assure every piece of Drill Collar leaving our facility conform to the requirements of API SPEC 7-1.
When producing,Traceability are maintained from the receipt of raw material to completion of final products. Serial numbers are die-stamped on each bar body.
During each manufacturing process, test and inspection are performed. We do Ultrasonic Testing and Magnetic Partical Testing before and after Heat Treatment. Specimen have been taken from each bar after heat-treatment to make Tensile Test and Impact Test. We assure the Mechanical Properties of our products comply with or exceed the requirements of API.
All connections are phosphate-coated or copper plating to improve resistance to corrosion.
API Stress Relief Pin and Boreback Box are available according to clients' requirements. We provide steel thread protector for free.
Specifications - Drill collar
|
Number and connection table |
Outside Diameter |
Inside Diameter |
Length |
Bevel |
Bending |
||
|
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(31/2IF) |
127 |
5 |
57.2 |
2 1/4 |
9150 |
121 |
2.38:1 |
|
NC44-60 |
152.4 |
6 |
57.2 |
2 1/4 |
9150 or 9450 |
144.5 |
2.49:1 |
|
NC44-60 |
152.4 |
6 |
71.4 |
2 13/16 |
9150 or 9450 |
144.5 |
2.84:1 |
|
NC44-62 |
158.8 |
6 1/4 |
57.2 |
2 1/4 |
9150 or 9450 |
149.2 |
2.91:1 |
|
NC44-62(4IF) |
158.8 |
6 1/2 |
71.4 |
2 13/16 |
9150 or 9450 |
150 |
2.63:1 |
|
NC44-65(4IF) |
165.1 |
6 1/2 |
57.2 |
2 1/4 |
9150 or 9450 |
154.8 |
2.76:1 |
|
NC44-65(4IF) |
165.1 |
6 1/2 |
71.4 |
2 13/16 |
9150 or 9450 |
154.8 |
3.05:1 |
|
NC44-67(4IF) |
171.4 |
6 3/4 |
57.2 |
2 1/4 |
9150 or 9450 |
159.5 |
3.18:1 |
|
NC50-67(41/2IF) |
171.4 |
6 3/4 |
71.4 |
2 13/16 |
9150 or 9450 |
159.5 |
2.37:1 |
|
NC50-70(41/2IF) |
177.8 |
7 |
57.2 |
2 1/4 |
9150 or 9450 |
164.7 |
2.54:1 |
|
NC50-70(41/2IF) |
177.8 |
7 |
71.4 |
2 13/16 |
9150 or 9450 |
164.7 |
2.73:1 |
|
NC50-72(41/2IF) |
184.2 |
7 1/4 |
71.4 |
2 13/16 |
9150 or 9450 |
169.5 |
3.12:1 |
|
NC56-77 |
196.8 |
7 3/4 |
71.4 |
2 13/16 |
9150 or 9450 |
185.3 |
2.70:1 |
|
NC56-80 |
203.2 |
8 |
71.4 |
2 13/16 |
9150 or 9450 |
190.1 |
3.02:1 |
|
6 5/8 REG |
209.6 |
8 1/4 |
71.4 |
2 13/16 |
9150 or 9450 |
195.7 |
2.93:1 |
|
NC61-90 |
228.6 |
9 |
71.4 |
2 13/16 |
9150 or 9450 |
212.7 |
3.17:1 |
|
7 5/8 REG |
241.3 |
9 1/2 |
76.2 |
3 |
9150 or 9450 |
223.8 |
2.81:1 |
|
NC70-97 |
247.6 |
9 3/4 |
76.2 |
3 |
9150 or 9450 |
232.6 |
2.57:1 |
|
NC70-100 |
254 |
10 |
76.2 |
3 |
9150 or 9450 |
237.3 |
2.81:1 |
|
8 5/8 REG |
279.4 |
11 |
76.2 |
3 |
9150 or 9450 |
266.7 |
2.84:1 |
|
Slips and elevator grooves can be produced upon the customers' requirement. |
|||||||
Send your inquiry to email: sales@chancematewellcontrol.com, we are waiting for you.
|
|
|
|
