API drill collar for oil and gas drilling-Spare part of Mining Equipment
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Description
Usage: Drill collars are used to provide weight on bit so that drill pipes are kept in tension. Especially drill collars can keep drill bits centralized and hole track by large rigidity
Material: AISI 4145H, 4145H Mod and Non - magnetic material.
Standard: API Spec7, API Spec7 - 1 and SY/T Standard. ALSO WE CAN SUPPLY DS - 1 and NS - 1 STANDARD.
Type: Slick drill collar
Spiral drill collar
Non - magnetic material.
Hard band: Arnco100XT, Arnco200XT and Arnco300XT; Botn1000, Botn3000, TCS8000, TCS - Titanium, Armacor M etc. Also we can make according to customers' requirements.
Size: OD: 3 1/8"~~11"; ID: 1 1/2"Min. Length: 10'~~31'
Detail specification
| Standard size , bores and connection for Drill Collar | |||||||
| Style of connection | OD | ID | Length | Bevel | Bending strength Ratio | ||
| mm | in | mm | in | mm | diameter mm | ||
| NC23 - 31 | 79. 4 | 3 1/8 | 31. 8 | 1 1/4 | 9150 | 76. 2 | 2. 57: 1 |
| NC26 - 35(23/8IF) | 88. 9 | 3 1/2 | 38. 1 | 1 1/2 | 9150 | 82. 9 | 2. 42: 1 |
| NC31 - 41(27/8IF) | 104. 8 | 4 1/8 | 50. 8 | 2 | 9150 | 100. 4 | 2. 43: 1 |
| NC35 - 47 | 120. 7 | 4 3/4 | 50. 8 | 2 | 9150 | 114. 7 | 2. 58: 1 |
| NC3850(31/2IF) | 127. 0 | 5 | 57. 2 | 2 1/4 | 9150 | 121. 0 | 2. 38: 1 |
| NC44 - 60 | 152. 4 | 6 | 57. 2 | 2 1/4 | 9150or9450 | 144. 5 | 2. 49: 1 |
| NC44 - 62 | 158. 8 | 6 1/4 | 57. 2 | 2 1/4 | 9150or9450 | 149. 2 | 2. 91: 1 |
| NC46 - 62(4IF) | 158. 8 | 6 1/4 | 71. 4 | 2 13/16 | 9150or9450 | 150. 0 | 2. 63: 1 |
| NC46 - 65(4IF) | 165. 1 | 6 1/2 | 57. 2 | 2 1/4 | 9150or9450 | 154. 8 | 2. 76: 1 |
| NC46 - 65(4IF) | 165. 1 | 6 1/2 | 71. 4 | 2 13/16 | 9150or9450 | 154. 8 | 3. 05: 1 |
| NC46 - 67(4IF) | 171. 4 | 6 3/4 | 57. 2 | 2 1/4 | 9150or9450 | 159. 5 | 3. 18: 1 |
| NC50 - 67(41/2IF) | 171. 4 | 6 3/4 | 71. 4 | 2 13/16 | 9150or9450 | 159. 5 | 2. 37: 1 |
| NC50 - 70(41/2IF) | 177. 8 | 7 | 57. 2 | 2 1/4 | 9150or9450 | 164. 7 | 2. 54: 1 |
| NC50 - 70(41/2IF) | 177. 8 | 7 | 71. 4 | 2 13/16 | 9150or9450 | 164. 7 | 2. 73: 1 |
| NC50 - 72(41/2IF) | 184. 2 | 7 1/4 | 71. 4 | 2 13/16 | 9150or9450 | 169. 5 | 3. 12: 1 |
| NC50 - 77 | 196. 8 | 7 3/4 | 71. 4 | 2 13/16 | 9150or9450 | 185. 3 | 2. 70: 1 |
| NC50 - 80 | 203. 2 | 8 | 71. 4 | 2 13/16 | 9150or9450 | 190. 1 | 3. 02: 1 |
| 6 5/8REG | 209. 6 | 8 1/4 | 71. 4 | 2 13/16 | 9150or9450 | 195. 7 | 2. 93: 1 |
| NC61 - 90 | 228. 6 | 9 | 71. 4 | 2 13/16 | 9150or9450 | 212. 7 | 3. 17: 1 |
| 7 5/8REG | 241. 3 | 9 1/2 | 76. 2 | 3 | 9150or9450 | 223. 8 | 2. 81: 1 |
| NC70 - 97 | 247. 6 | 9 3/4 | 76. 2 | 3 | 9150or9450 | 232. 6 | 2. 57: 1 |
| NC70 - 100 | 254. 0 | 10 | 76. 2 | 3 | 9150or9450 | 237. 3 | 2. 81: 1 |
| 8 5/8REG | 279. 4 | 11 | 76. 2 | 3 | 9150or9450 | 266. 7 | 2. 84: 1 |
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API drill collar for oil and gas drilling-Spare part of Mining Equipment