Beijing Jincheng Mining Technology Co., Ltd.
| Payment Terms | T/T, L/C, D/P, Western Union, MoneyGram |
| Supply Ability | 20000pcs/Year |
| Delivery Time | In stock or as order quantity |
| Packaging Details | Standard export package |
| Type | drill collar |
| Usage | Oil Field, Natural Gas, Mining Drlling, Water Well |
| Material | Tungsten Carbide |
| Application | Mining Drlling, Water Well Drilling |
| Thread | 4-1/2API REG |
| Package | Carton And Wooden Case |
| Length | 4.5m |
| Weight | 800kgs |
| Processing Type | Forging |
| nspection | SGS,BV |
| Brand Name | JCDRILL |
| Model Number | 175*4500mm |
| Certification | ISO,CE |
| Place of Origin | Hebei,China |
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Product Specification
| Payment Terms | T/T, L/C, D/P, Western Union, MoneyGram | Supply Ability | 20000pcs/Year |
| Delivery Time | In stock or as order quantity | Packaging Details | Standard export package |
| Type | drill collar | Usage | Oil Field, Natural Gas, Mining Drlling, Water Well |
| Material | Tungsten Carbide | Application | Mining Drlling, Water Well Drilling |
| Thread | 4-1/2API REG | Package | Carton And Wooden Case |
| Length | 4.5m | Weight | 800kgs |
| Processing Type | Forging | nspection | SGS,BV |
| Brand Name | JCDRILL | Model Number | 175*4500mm |
| Certification | ISO,CE | Place of Origin | Hebei,China |
| High Light | tricone drill bit ，tricone rock roller bits | ||
API7-1 175 Deep Hole Water Well Drilling Spiral Drill Collars 800kgs
Application
Drill collar is mainly used for providing drill bits with required drilling pressure, ensuring pull force transmitted to drill pipe and centralize the drill bit. According to API Spec7-1 specifications, the material quality is 4145H that’s after heat treatment, thread hardening treatment and phosphate to better anti-seize. It also can be produced upon customers’ requirements.
Characteristics
Heavy Weight Drill collar is an essential part of the performance of Jinke down hole drilling tools. Drill collars provide weight on bit for drilling through formations. Rig drillers are able to monitor weight applied to bit by monitoring through simple calculations, and a weight indicator scale, on rig floor. Drill collars are typically 31’ feet in length,thick walled, and heavy steel. They come
JCDRILL keeps a generous supply of carbon steel drill collars in stock. Lead Collar Lead collars purpose is to put a short amount of space between the drilling bit, and near bit stabilizer. This is just another way Jinke gives you the ability to tweak your performance needs as down hole challenges arise. By adding this short spacing between bit, and near bit stab, you stiffen the BHA wright at the bit, reducing bit walk, therefore, promoting a straighter hole. Jinke keeps a generous supply of carbon steel lead collars in stock.
Specification
| Drill collar number | Outside diameter | Bore | Length | Beveldiameter | Reference bending | |||
| And connection label | D | d | L | DF | strength ratio | |||
| in | mm | in | mm | ft | m | mm | BSR | |
| NC23 – 31 | 3 1/8 | 79.4 | 1 1/4 | 31.8 | 30 | 9.14 | 76.2 | 2.57:1 |
| NC 26 – 35 | 3 1/2 | 88.9 | 1 1/2 | 38.1 | 30 | 9.14 | 82.9 | 2.42:1 |
| NC31 – 41 | 4 1/8 | 104.8 | 2 | 50.8 | 30/31 | 9.14/9.45 | 100.4 | 2.43:1 |
| NC 35 – 47 | 4 3/4 | 120.7 | 2 | 50.8 | 30/31 | 9.14/9.45 | 114.7 | 2.58:1 |
| NC 38 – 50 | 5 | 127 | 2 1/4 | 57.2 | 30/31 | 9.14/9.45 | 121 | 2.38:1 |
| NC 44 – 60 | 6 | 152.4 | 2 1/4 | 57.2 | 30/31 | 9.14/9.45 | 144.5 | 2.49:1 |
| NC 44 – 60 | 6 | 152.4 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 144.5 | 2.84:1 |
| NC 44 – 62 | 6 1/4 | 158.8 | 2 1/4 | 57.2 | 30/31 | 9.14/9.45 | 149.2 | 2.91:1 |
| NC46 – 62 | 6 1/4 | 158.8 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 150 | 2.63:1 |
| NC46 – 65 | 6 1/2 | 165.1 | 2 1/4 | 57.2 | 30/31 | 9.14/9.45 | 154.8 | 2.76:1 |
| NC46 – 65 | 6 1/2 | 165.1 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 154.8 | 3.05:1 |
| NC46 – 67 | 6 3/4 | 171.4 | 2 1/4 | 57.2 | 30/31 | 9.14/9.45 | 159.5 | 3.18:1 |
| NC 50 – 70 | 7 | 177.8 | 2 1/4 | 57.2 | 30/31 | 9.14/9.45 | 164.7 | 2.54:1 |
| NC 50 – 70 | 7 | 177.8 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 164.7 | 2.73:1 |
| NC50 – 72 | 7 1/4 | 184.2 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 169.5 | 3.12:1 |
| NC56 – 77 | 7 3/4 | 196.8 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 185.3 | 2.70:1 |
| NC56 – 80 | 8 | 203.2 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 190.1 | 3.02:1 |
| 6 5/8 REG | 8 1/4 | 209.6 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 195.6 | 2.93:1 |
| NC61 – 90 | 9 | 228.6 | 2 13/16 | 71.4 | 30/31 | 9.14/9.45 | 212.7 | 3.17:1 |
| 7 5/8 REG | 9 1/2 | 241.3 | 3 | 76.2 | 30/31 | 9.14/9.45 | 223.8 | 2.81:1 |
| NC70 - 97 | 9 3/4 | 247.6 | 3 | 76.2 | 30/31 | 9.14/9.45 | 232.6 | 2.57:1 |
| NC70– 100 | 10 | 254 | 3 | 76.2 | 30/31 | 9.14/9.45 | 237.3 | 2.81:1 |
| 8 5/8 REG | 11 | 279.4 | 3 | 76.2 | 30/31 | 9.14/9.45 | 266.7 | 2.84:1 |
Packing& Delivery
Service
In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.
We provide "one equipment & one case, endless service, namely the after sales service begin from the order confirmation, last for the working life of the equipment.
Company Details
Business Type:
Manufacturer
Year Established:
1999
Total Annual:
30 Million-40Million
Employee Number:
250~300
Ecer Certification：
Verified Supplier
Beijing Jincheng Mining Technology Co., Ltd. (JCDRILL) is located in Beijing, China. For more than 20 years, we have specialized in the research, development, and production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related access... Beijing Jincheng Mining Technology Co., Ltd. (JCDRILL) is located in Beijing, China. For more than 20 years, we have specialized in the research, development, and production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related access...
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