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কলার ড্রিল


  • প্রযুক্তিগত বৈশিষ্ট্য
  • কারিগরী পরামিতি

প্রধান প্রযুক্তিগত বৈশিষ্ট্য

● Material: 4145H/4145Hmod or Non-magnetic.

●.Standard: API SPEC 7-1, NS-1.

● Types: Slick Drill Collars, Spiral Drill Collars, Non-magnetic Drill Collars

●Thread Protectors: Steel, cast steel and plastic steel thread protectors for drill collars


A Slick Drill Collar

Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension.

Especially drill collar can keep drill bit centralized and hole track by large rigidity. The Drill collar

are manufactured strictly from API Spec7-1 and NS-1 standard.


B Spiral Drill Collar

Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking

from differential pressure. The drill collars are manufactured strictly according to API Spec7-1.


C. Elevator Groove And Slip Groove

Elevator groove and slip groove made on box thread face of slick drill collar or spiral drill collar

can be used as lifting sub and safety slip when trip out. The technical parameters for elevator

groove and slip groove is as per API SPEC7-1. Hard banding is optional at customers’ requests.


D. Non-magnetic Drill Collar

Cold roiled finish on both ID and OD surface with unique technical process strengthen the

structure and ensures the tools with optimal resistance to stress, corrosion, cracking and the

mechanical performance is greatly enhanced.
 

Drill Collar Thread OD ID লম্বা
mm in mm in mm
NC31-41(27/8IF 104.8 4 1 / 8 50.8 2 9150
এনসি 35-47 120.7 4 3 / 4 50.8 2 9150
NC38-50(31/2IF) 127 5 57.2 2 1 / 4 9150
এনসি 44-60 152.4 6 57.2 2 1 / 4 9150or9450
এনসি 44-60 152.4 6 71.4 2 13 / 16 9150or9450
এনসি 44-62
158.8 6 1 / 4 57.2 2 1 / 4 9150or9450
NC46-62(4IF) 158.8 6 1 / 4 71.4 2 13 / 16 9150or9450
NC46-65(4IF 165.1 6 1 / 2 57.2 2 1 / 4 9150or9450
NC46-65(4IF 165.1 6 1 / 2 71.4 2 13 / 16 9150or9450
NC46-67(4IF) 171.4 6 3 / 4 57.2 2 1 / 4 9150or9450
NC50-67(41/2IF) 171.4 6 3 / 4 71.4 2 13 / 16 9150or9450
NC50-70(41/2IF) 177.8 7
57.2
2 1 / 4 9150or9450
NC50-70(41/2IF) 177.8 7
71.4
2 13 / 16 9150or9450
NC50-72(41/2IF) 184.2 7 1 / 4 71.4 2 13 / 16 9150or9450
এনসি 56-77 196.8 7 1 / 4 71.4 2 13 / 16 9150or9450
এনসি 56-80 203.2 8
71.4 2 13 / 16 9150or9450
65/xREG 209.6 8 1 / 4 71.4 2 13 / 16 9150or9450
এনসি 61-90 228.6 9 71.4 2 13 / 16 9150or9450


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