Customization: | Available |
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After-sales Service: | Yes |
Warranty: | 3 Months |
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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. |
We shandong yacheng petroleum technology are established in 2003 year, located in Dongying city, shengli oilfield, which is the second largest oilfield of China.