High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String

Product Details
Customization: Available
Customized: Customized
Surface Treatment: Painting
Diamond Member Since 2021

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  • High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
  • High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
  • High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
  • High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
  • High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
  • High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
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Basic Info.

Model NO.
API SPEC 7-1
Type
Spiral Drill Collar
Standard
API
Usage
Oil Mining, Well Drilling
Material
AISI4145h
Weight (Kg)
200
Condition
New
Local Service Location
None
Keyword
Kelly Drill Pipe
Use
Well Drilling
Dimension(L*W*H)
2000*150*150mm
End Protector
Plastic Pipe Cap
Certification
API
Warranty of Core Components
1 Year
Surface
Painting
Applicable Industries
Energy & Mining
Marketing Type
Ordinary Product
Core Components
Bearing, Gear, Pump
Features
Safe and Stable
Machinery Test Report
Provided
Transport Package
Iron Shelves
Specification
Up to the quantities
Trademark
GOLDENMAN
Origin
Shandong, China
HS Code
843143
Production Capacity
1000pieces/Year

Product Description

DRILL COLLAR
High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
 
 
Drill Collar

-Purpose: Meticulously engineered to add substantial weight to the drill bit, ensuring constant contact with the geological formation while delivering unmatched stability to the entire drill string.

-Specifications:
1) Size: Available in outer diameters ranging from a compact 3-1/8 inches to a robust 11 inches, complemented by standard lengths of 31 feet to suit various drilling needs.
2) Material: Crafted from superior alloy steel, distinguished by its exceptional high yield strength for enduring performance.
3) Weight: Notably heavier than the standard drill pipe, boasting a specific gravity approximately around 7.8 to guarantee durability and efficiency.
4) Thread Connections: Equipped with API Regular threads or other premium thread options to ensure seamless compatibility and secure connections.

-Features:
1) Ingeniously designed spiral grooves crafted for the effective prevention of differential sticking, enhancing operational efficiency.
2) Non-magnetic drill collars are specially designed for the use of sensitive directional tools, ensuring precision and reliability even in complex directional drilling scenarios.
Drill collar specifications
Nominal Size
OD
ID
Length
Bevel Dia. mm
Bending Strength Ratio
mm
in
mm
in
mm
NC31-41(2-7/8IF)
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
NC38-50(3-1/2IF)
127
5
57.2
2-1/4
9150
121
2.38:1
NC44-60
152.4
6
71.4
2-13/16
9150/9450
144.5
2.84:1
NC44-62
158.8
6-1/4
57.2
2-1/4
9150/9450
149.2
2.91:1
NC46-62(4IF)
158.8
158.8
71.4
2-13/16
9150/9450
150
2.63:1
NC50-70(4-1/2IF)
177.8
7
57.2
2-1/4
9150/9450
164.7
2.54:1
NC56-77
196.8
7-3/4
71.4
2-13/16
9150/9450
185.3
2.70:1
6-5/8REG
209.6
8-1/4
71.4
2-13/16
9150/9450
195.7
2.93:1
NC61-90
228.6
9
71.4
2-13/16
9150/9450
212.7
3.17:1
We can supply full size drill collar with API 5D/5DP, Please leave a message for consultation.
 
Drill pipe
 
 
Size(in)
OD of Pipe Body(mm)
Wall Thickness of Pipe Bodymm
2.3/8" to 6.5/8"
60.32-168.28
7.11-12.70
 
 
 
High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
 
 
 
 
High-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill StringHigh-Quality API 4 1/2 Reg Drill Collar Slick Spiral Drill String
 

 

 
 
 
 

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