| Customization: | Available |
|---|---|
| After-sales Service: | 1year |
| Warranty: | 1year |
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Drill Collars are integral heavy-wall joints that are manufactured from a solid bar of modified alloy steel. The solid bars are quenched and tempered to obtain the required mechanical properties, then trepanned, drifted and threaded. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface of the pipe.
Lake Petroleum could supply slick type drill collar, spiral drill collar and Non-magnetic drill collar (NMDC).
| Size (in) |
O.D (mm) |
I.D. (in) |
Code | Thread | Length (mm) |
Weight (kg) |
| 3 1/8 | 79.4 | 1-1/4 | NC23-31 | NC23 | 9140 | 298 |
| 3 1/2 | 88.9 | 1-1/2 | NC26-35 | NC26 | 9140 | 364 |
| 4 1/8 | 104.8 | 2 | NC31-41 | NC31 | 9140/9450 | 474/490 |
| 4 3/4 | 120.6 | 2 | NC35-47 | NC35 | 9140/9450 | 674/697 |
| 5 | 127 | 2-1/4 | NC38-50 | NC38 | 9140/9450 | 725/749 |
| 6 | 152.4 | 2-1/4 | NC44-60 | NC44 | 9140/9450 | 1125/1163 |
| 6 | 152.4 | 2-13/16 | NC44-60 | NC44 | 9140/9450 | 1022/1056 |
| 6 1/4 | 158.8 | 2-1/4 | NC44-62 | NC44 | 9140/9450 | 1237/1279 |
| 6 1/4 | 158.8 | 2-13/16 | NC46-62 | NC44 | 9140/9450 | 1134/1172 |
| 6 1/2 | 165.1 | 2-1/4 | NC46-65 | NC46 | 9140/9450 | 1352/1398 |
| 6 1/2 | 165.1 | 2-13/16 | NC46-65 | NC50 | 9140/9450 | 1249/1291 |
| 6 3/4 | 171.4 | 2-1/4 | NC46-67 | NC46 | 9140/9450 | 1471/1521 |
| 7 | 177.8 | 2-1/4 | NC50-70 | NC50 | 9140/9450 | 1597/1651 |
| 7 | 177.8 | 2-13/16 | NC50-70 | NC50 | 9140/9450 | 1494/1545 |
| 7 1/4 | 184.2 | 2-13/16 | NC50-72 | NC50 | 9140/9450 | 1625/1680 |
| 7 3/4 | 196.8 | 2-13/16 | NC56-77 | NC56 | 9140/9450 | 1895/1960 |
| 8 | 203.2 | 2-13/16 | NC56-80 | NC56 or 6- 5/8REG | 9140/9450 | 2040/2109 |
| 8 1/4 | 209.6 | 2-13/16 | 6-5/8REG | 6-5/8REG | 9140/9450 | 2188/2263 |
| 9 | 228.6 | 2-13/16 | NC61-90 | NC61 | 9140/9450 | 2658/2748 |
| 9 1/2 | 241.3 | 2-13/16 | 7-5/8REG | 7-5/8REG | 9140/9450 | 2954/3054 |
| 9 3/4 | 247.6 | 3 | NC70-97 | NC70 | 9140/9450 | 3127/3234 |
| 10 | 254 | 3 | NC70-100 | NC70 | 9140/9450 | 3308/3421 |
| 11 | 279.4 | 3 | 8-5/8REG | 8-5/8REG | 9140/9450 | 4072/4210 |
| Mechanical properties: <7 inch Drill Collar: Yield Strength≥758MPa, Tensile Strength≥965MPa, Four times elongation ≥13%, Impact energy Ak≥54J (Single impact work≥47J, Average≥54J), Hardness range: 285HB~341HB ≥7inch Drill Collar: Yield Strength≥689MPa, Tensile Strength≥931MPa, Four times elongation≥13%, Impact energy Ak≥54J (Single impact work≥47J, Average≥54J), Hardness range 285HB~341HB |
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| Drill collar can be customized as per customer's design. | ||||||
| Business type |
Custom manufacturer
|
Country / Region |
Shandong, China
|
| Main Products |
Liner, Piston, Valve Assy, Swivel Joint, Hammer Union
|
Total employees |
11 - 50 People
|
| Total Annual Revenue |
2300000
|
Year established |
2011
|
| Major Clients |
Confidential
|
Certifications(3) |
ISO 45001, ISO9001, ISO14001
|
| Product Certifications |
-
|
Patents |
-
|
| Trademarks |
-
|
Main Markets |
Eastern Europe 26.00%
Mid East 23.00%
North America 15.00%
|
Why you need to choose Lake Petro?
As a professional oil and gas service company, Lake Petro has many good experience in selling and serves for the oilfield
industries for years. Quality is the culture of the company, we provide API and BV certified products for customer.
Can you make us the best quality products as well as a good price.
Yes. we can give you really high quality products with competitive price. We have a better understanding in Chinese market, withus
our money will be safe.
What is special compare with other companies?
First, we provide the quality products, with BV and API certified; At the same time, we provide our customer with the best service
after sale, any time any where.
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