Drill Collar Specs : Sheet1

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2 | Drill Collar Specifications | ||||||||

3 | June 2021 | ||||||||

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5 | Drill Collar Number (1) | Drill Collar Diameter In. | Bore + 1 ⅙" -0" In. | Length ft. | Approximate Weight lb/ft. | Selection Modulus (in.3) | Displacement (open ended) US gal/ft. | Typical Bending Strength Ratio | |

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7 | NC 23-31 | 3 ⅛ | 1 ⅟₄ | 30 | 22.00 | 2.919 | 0.337 | 257:1 | |

8 | NC 26-35 (2 ⅜ IF) | 3 ⅟₂ | 1 ⅟₂ | 30 | 26.70 | 4.067 | 0.408 | 242:1 | |

9 | NC 31-41 (2 ⅞ IF) | 4 ⅛ | 2 | 30 or 31 | 33.65 | 6.510 | 0.515 | 243:1 | |

10 | NC 35-47 | 4 ³∕₄ | 2 | 30 or 31 | 46.81 | 10.191 | 0.716 | 258:1 | |

11 | NC38-50 (3 ⅟₂ IF) | 5 | 2 ⅟₄ | 30 or 31 | 53.29 | 11.769 | 0.815 | 238:1 | |

12 | NC 44-60 | 6 | 2 ⅟₄ | 30 or 31 | 82.61 | 20.786 | 1.264 | 249:1 | |

13 | NC 44-60 | 6 | 2 ¹³∕₁₆ | 30 or 31 | 75.90 | 20.182 | 1.161 | 284:1 | |

14 | NC 44-62 | 6 ⅟₄ | 2 ⅟₄ | 30 or 31 | 90.52 | 23.566 | 1.385 | 291:1 | |

15 | NC 46-62 (4 IF) | 6 ⅟₄ | 2 ¹³∕₁₆ | 30 or 31 | 83.81 | 22.986 | 1.282 | 263:1 | |

16 | NC 46-65 (4 IF) | 6 ⅟₂ | 2 ⅟₄ | 30 or 31 | 99.52 | 99.520 | 1.522 | 276:1 | |

17 | NC 46-65 (4 IF) | 6 ⅟₂ | 2 ¹³∕₁₆ | 30 or 31 | 92.81 | 92.810 | 1.420 | 305:1 | |

18 | NC 46-67 (4 IF) | 6 ³∕₄ | 2 ⅟₄ | 30 or 31 | 108.52 | 108.520 | 1.600 | 318:1 | |

19 | NC 50-70 (4 ⅟₂ IF) | 7 | 2 ⅟₄ | 30 or 31 | 117.52 | 117.520 | 1.798 | 254:1 | |

20 | NC 50-70 (4 ⅟₂ IF) | 7 | 2 ¹³∕₁₆ | 30 or 31 | 110.77 | 110.770 | 1.694 | 273:1 | |

21 | NC 50-72 (4 ⅟₂ IF) | 7 ⅟₄ | 2 ¹³∕₁₆ | 30 or 31 | 119.81 | 119.810 | 1.833 | 312:1 | |

22 | NC 56-77 | 7 ³∕₄ | 2 ¹³∕₁₆ | 30 or 31 | 139.90 | 139.900 | 2.140 | 270:1 | |

23 | NC 56-80 | 8 | 2 ¹³∕₁₆ | 30 or 31 | 150.81 | 150.810 | 2.307 | 302:1 | |

24 | 6 ⅝ API Reg | 8 ⅟₄ | 2 ¹³∕₁₆ | 30 or 31 | 161.81 | 161.810 | 2.472 | 293:1 | |

25 | NC 61-90 | 9 | 2 ¹³∕₁₆ | 30 or 31 | 195.81 | 217.000 | 2.295 | 317:1 | |

26 | 7 ⅝ API Reg | 9 ⅟₂ | 3 | 30 or 31 | 217.00 | 230.000 | 3.319 | 281:1 | |

27 | NC 70-97 | 9 ³∕₄ | 3 | 30 or 31 | 230.00 | 90.179 | 3.518 | 257:1 | |

28 | NC 70-100 | 10 | 3 | 30 or 31 | 242.00 | 97.380 | 3.717 | 281:1 | |

29 | 8 ⅝ API Reg | 11 | 3 | 30 or 31 | 299.00 | 129.948 | 4.574 | 284:1 | |

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