Professional Drilling Tools manufacturer

25 Years Manufacturing Experience

194mm 6m API drill collar casing and tubing drill collar for water well drilling

Short Description:

Applicable Industries:
Energy & Mining
Weight (KG):
50
Type:
Drill Collar
Machine Type:
Drilling Tool
Material:
4145H
Use:
Well Drilling
Application:
Coal Mining
Usage:
Crushing Etc
Appearance:
Smooth
Working Process:
Machining
Size:
3 3/4 “(95.3mm)~26″(660.4mm)

  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Product Detail

    Product Tags

    Product Detail

    Collar and Pipe Features

    drill collar (1)

    Drill collar is mainly used for providing drill bits with required drilling pressure, ensuring pull force transmitted to drill pipe and centralize the drill bit. According to API Spec7-1 specifications, the material quality is 4145H that’s after heat treatment, thread hardening treatment and phosphate to better anti-seize. It also can be produced upon customers’ requirements.

    Heavy Weight Drill collar is an essential part of the performance of Jcdrill down hole drilling tools. Drill collars provide weight on bit for drilling through formations. Rig drillers are able to monitor weight applied to bit by monitoring through simple calculations, and a weight indicator scale, on rig floor. Drill collars are typically 31’ feet in length,thick walled, and heavy steel. They come box by pin with like connections, in order to mate as many needed, to achieve desired weight. Drill collars come slick OD, or machined with helical grooves (spiral collars). Jink ekeeps a generous supply of carbon steel drill collars in stock. Lead Collar Lead collars purpose is to put a short amount of space between the drilling bit, and near bit stabilizer. This is just another way Jcdrill gives you the ability to tweak your performance needs as down hole challenges arise. By adding this short spacing between bit, and near bit stab, you stiffen the BHA wright at the bit, reducing bit walk, therefore, promoting a straighter hole. Jcdrill keeps a generous supply of carbon steel lead collars in stock.

       
    m
         
    Design
    O
    D
    ID
    Lengh Chamfer Diameter
    in
    mm
    +1.6-0.0mm
    +152.4mm +0.4mm
    NC23-31
    3 1/8
    79.4
    31.8
    9.15 76.2
    NC26-35
    3 1/2
    88.9
    38.1
    9.15 82.9
    NC31-41
    4 1/8
    104.8
    50.8
    9.159.45 100.4
    NC35-47
    4 3/4
    120.7
    50.8
    9.159.45 114.7
    NC38-50
    5
    127
    57.2
    9.159.45 121
    NC44-60
    6
    152.4
    57.2
    9.159.45 144.5
    NC44-60
    6
    152.4
    71.4
    9.159.45 144.5
    NC44-62
    6 1/4
    158.8
    57.2
    9.159.45 149.2
    NC44-62
    6 1/4
    158.5
    71.4
    9.159.45 150
    NC46-65
    6 1/2
    165.1
    57.2
    9.159.45 154.8
    NC46-65
    6 1/2
    165.1
    71.4
    9.159.45 154.8
    NC46-67
    6 3/4
    171.5
    57.2
    9.159.45 159.5
    NC50-70
    7
    177.8
    57.2
    9.159.45 164.7
    NC50-70
    7
    177.8
    71.4
    9.159.45 164.7
    NC50-72
    7 1/4
    184.2
    71.4
    9.159.45 169.5
    NC56-77
    7 3/4
    196.9
    71.4
    9.159.45 185.3
    NC56-80
    8
    203.2
    71.4
    9.159.45 190.1
    6 5/8REG
    8 1/4
    209.6
    71.4
    9.159.45 195.7
    NC61-90
    9
    228.6
    71.4
    9.159.45 212.7
    7 5/8REG
    9 1/2
    241.3
    76.2
    9.159.45 223.8
    NC70-97
    9 3/4
    247.7
    76.2
    9.159.45 232.6
    NC70-100
    10
    254
    76.2
    9.159.45 237.3
    8 5/8REGc
    11
    279.4
    76.2
    9.159.45 266.7

    drilling collars


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