Non-magnetic Drill Collars
4145H mod Downhole Drilling Tools Drill Collars
Forged Oil Field Using Round Drill Collar
It is the round pipe with smooth surface and thick wall, and the both ends are machined screw thread for connection.
| Material: | AISI4145H mod |
| Processing Type: | Forging |
| Use: | It is mainly used between the drill head and the drill pipe, so that it can make the drill head work reposefully and keep right trace by providing the pressure and weight for drill head. |
| OD: | 79.4 - 279.4 mm |
| Manufacture technique: | Hot forged and heat treated |
| Test: | UT&MT test |
| Length: | 9150 or 9450 mm |
| Connection: | NC23-31,NC31-41,NC35-47,NC38-50,NC44-60,NC50-70,7 5/8REG, 8 5/8REG |
| Test reports | Chemical Composition, Physical Properties and Mechanical Testing according to the customer's requirement |
| Surface finishes: | Black, Peeled, Turned & Polished |
| Delivery condition: | Hot forged, Heat-treatment (Normalized / Annealed / Quenched / tempered), Rough machining. |
| Process: | EAF + LF + VD +(ESR) + Forged + Heat Treatment (optional) |
| material of non-magnetic drill collars | Non magnetic steel |
| Standard: | API Spec 7-1 or SY/T5144 Standard. |
KINGWELL Drill Collar Technical Data:
| OD | ID | L(mm) | DF(mm) | Bending Strength ratio | Drill Collar Nominal size | ||
| mm | in | mm | in | ||||
| 79.4 | 3-1/8 | 31.8 | 1-1/4 | 9,150 | 76.2 | 2.57:1 | NC23-31 |
| 88.9 | 3-1/2 | 38.1 | 1-1/2 | 9,150 | 82.9 | 2.42:1 | NC26-35(2-3/8IF) |
| 104.8 | 4-1/8 | 50.8 | 2 | 9,150 | 100.4 | 2.43:1 | NC31-41(2-7/8IF) |
| 120.7 | 4-3/4 | 50.8 | 2 | 9,150 | 114.7 | 2.58:1 | NC35-47 |
| 127 | 5 | 57.2 | 2-1/4 | 9,150 | 121 | 2.38:1 | NC38-50(3-1/2IF) |
| 152.4 | 6 | 57.2 | 2-1/4 | 9,150/9,450 | 144.5 | 2.49:1 | NC44-60 |
| 152.4 | 6 | 71.4 | 2-13/16 | 9,150/9450 | 144.5 | 2.84:1 | NC44-60 |
| 158.8 | 6-1/4 | 57.2 | 2-1/4 | 9,150/9,450 | 149.2 | 2.91:1 | NC44-62 |
| 158.8 | 6-1/4 | 71.4 | 2-13/16 | 9,150/9,450 | 150 | 2.63:1 | NC46-62(4IF) |
| 165.1 | 6-1/2 | 57.2 | 2-1/4 | 9,150/9,450 | 154.8 | 2.76:1 | NC46-65(4IF) |
| 165.1 | 6-1/2 | 71.4 | 2-13/16 | 9,150/9,450 | 154.8 | 3.05:1 | NC46-65(4IF) |
| 171.4 | 6-3/4 | 57.2 | 2-1/4 | 9,150/9,450 | 159.5 | 3.18:1 | NC46-67(4IF) |
| 171.4 | 6-3/4 | 71.4 | 2-13/16 | 9,150/9,450 | 159.5 | 2.37:1 | NC50-67(4-1/2IF) |
| 177.8 | 7 | 57.2 | 2-1/4 | 9,150/9,450 | 164.7 | 2.54:1 | NC50-70(4-1/2IF) |
| 177.8 | 7 | 71.4 | 2-13/16 | 9,150/9,450 | 164.7 | 2.73:1 | NC50-70(4-1/2IF) |
| 184.2 | 7-1/4 | 71.4 | 2-13/16 | 9,150/9,450 | 169.5 | 3.12:1 | NC50-72(4-1/2IF) |
| 196.8 | 7-3/4 | 71.4 | 2-13/16 | 9,150/9,450 | 185.3 | 2.70:1 | NC56-77 |
| 203.2 | 8 | 71.4 | 2-13/16 | 9,150/9,450 | 190.1 | 3.02:1 | NC56-80 |
| 209.6 | 8-1/4 | 71.4 | 2-13/16 | 9,150/9,450 | 195.7 | 2.93:1 | 6-5/8REG |
| 228.6 | 9 | 71.4 | 2-13/16 | 9,150/9,450 | 212.7 | 3.17:1 | NC61-90 |
| 241.3 | 9-1/2 | 76.2 | 3 | 9,150/9,450 | 223.8 | 2.81:1 | 7-5/8REG |
| 247.6 | 9-3/4 | 76.2 | 3 | 9,150/9,450 | 232.6 | 2.57:1 | NC70-97 |
| 254 | 10 | 76.2 | 3 | 9,150/9,450 | 237.3 | 2.81:1 | NC70-100 |
| 279.4 | 11 | 76.2 | 3 | 9,150/9,450 | 266.7 | 2.84:1 | 8-5/8 REG |
Our main product drilling tools include: drill pipe, drill collar, heavy weight drill pipe, stabilizer, etc.
Drill collar:
Heavy weight drill pipe
Stabilizer
Company introduction
Xi'an KINGWELL OILFIELD MACHINERY Co., Ltd. (KINGWELL) is a highly reputable supplier for oilfield equipment and services to Oil & Gas industries and provides complete solutions.
With over 10 years developing, we were developed from the beginning drilling service to manufacture factory who produce OCTG, drilling tools, DST tools and Solid control products.
KINGWELL have experienced team, stronger enough to meet any challenge, we do believe honest is the base of business and cooperation; our aim is to build solid relationship with any part of honest. kingwell can provide highly efficient services to its clients resulting in accurate and timely deliveries at the best prices. Our products have been exported to Europe, American and Middle East.
