API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc

Product Details
Customization: Available
After-sales Service: 3 Years
Warranty: 3 Years
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Number of Employees
35
Year of Establishment
2005-05-26
  • API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
  • API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
  • API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
  • API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
  • API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
  • API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
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  • Overview
  • Product Description
  • Features
  • Product Parameters
  • Detailed Photos
  • drawing sheet
  • machining process
Overview

Basic Info.

Model NO.
3-1/8---11inch
Surface Treatment
Polishing
Operation Pressure
Atmospheric Pressure
Material
Alloy
Standard
API7-1 7-2
Connection
API Reg API If Nc
Length
9140mm 9450mm
Hard Banding
Arnco 350xt or Other
Non Magnetic Material
AISI 4154h
Magnatic Material
P530 P550
Transport Package
Steel Support
Specification
3-1/8inch---11inch
Trademark
JX
Origin
China
HS Code
8431431000
Production Capacity
3000pieces/Years

Product Description

Product Description

Drill Collars are integral heavy-wall joints that are manufactured from a solid bar of modified alloy steel. The solid bars are quenched and tempered to obtain the required mechanical properties, then trepanned, drifted and threaded. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface of the pipe.

Features

1. Hardness range of 285 to 341 BHN and a charpy impact value of 40ft/lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature.

2. Connections as phosphate coated father machining to protect the threads from corrosive elements and to prevent galling upon initial make -up. Thread roots are cold rolled on API and H0-90 connections.

3. Pressed steel thread protectors are supplied to all drill collar that are equipped with standard connections.

4. Manufactured strictly according to API standard.

5. Widely used in oil, gas, HDD and geothermal field.

 

Product Parameters

 

Size
(in)
O.D
(mm)
I.D.
(in)
Code Thread Length
(mm)
Weight
(kg)
3 1/8 79.4 1-1/4 NC23-31 NC23 9140 298
3 1/2 88.9 1-1/2 NC26-35 NC26 9140 364
4 1/8 104.8 2 NC31-41 NC31 9140/9450 474/490
4 3/4 120.6 2 NC35-47 NC35 9140/9450 674/697
5 127 2-1/4 NC38-50 NC38 9140/9450 725/749
6 152.4 2-1/4 NC44-60 NC44 9140/9450 1125/1163
6 152.4 2-13/16 NC44-60 NC44 9140/9450 1022/1056
6 1/4 158.8 2-1/4 NC44-62 NC44 9140/9450 1237/1279
6 1/4 158.8 2-13/16 NC46-62 NC44 9140/9450 1134/1172
6 1/2 165.1 2-1/4 NC46-65 NC46 9140/9450 1352/1398
6 1/2 165.1 2-13/16 NC46-65 NC50 9140/9450 1249/1291
6 3/4 171.4 2-1/4 NC46-67 NC46 9140/9450 1471/1521
7 177.8 2-1/4 NC50-70 NC50 9140/9450 1597/1651
7 177.8 2-13/16 NC50-70 NC50 9140/9450 1494/1545
7 1/4 184.2 2-13/16 NC50-72 NC50 9140/9450 1625/1680
7 3/4 196.8 2-13/16 NC56-77 NC56 9140/9450 1895/1960
8 203.2 2-13/16 NC56-80 NC56 or 6- 5/8REG 9140/9450 2040/2109
8 1/4 209.6 2-13/16 6-5/8REG 6-5/8REG 9140/9450 2188/2263
9 228.6 2-13/16 NC61-90 NC61 9140/9450 2658/2748
9 1/2 241.3 2-13/16 7-5/8REG 7-5/8REG 9140/9450 2954/3054
9 3/4 247.6 3 NC70-97 NC70 9140/9450 3127/3234
10 254 3 NC70-100 NC70 9140/9450 3308/3421
11 279.4 3 8-5/8REG 8-5/8REG 9140/9450 4072/4210
Mechanical properties:
<7 inch Drill Collar: Yield Strength758MPa, Tensile Strength965MPa, Four times elongation 13%, Impact energy Ak54J (Single impact work≥47J, Average≥54J), Hardness range: 285HB~341HB
7inch Drill Collar: Yield Strength≥689MPa, Tensile Strength≥931MPa, Four times elongation≥13%, Impact energy Ak54J (Single impact work≥47J, Average54J), Hardness range 285HB~341HB
Drill collar can be customized as per customer's design.
Detailed Photos
API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc
API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc

 

drawing sheet

API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc

machining process

API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc

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