Hebei, China
Business Type:
Trading Company
Business Range:
Manufacturing & Processing Machinery, Tools & Hardware
Management System Certification:
ISO 9001, ISO 14001

Drill Collar, Tube, Oil Tube manufacturer / supplier in China, offering High Quality API Oil Drilling Tool Threaded Drill Collar Low Price, 9 5/8" Hard Rock Drilling TCI Tricone Bit, 9 1/2" Hard Rock Drilling TCI Tricone Bit and so on.

Gold Member Since 2017
Audited Supplier
Supplier Homepage Products Drilling Tools Others Drilling Tools High Quality API Oil Drilling Tool Threaded Drill Collar Low Price

High Quality API Oil Drilling Tool Threaded Drill Collar Low Price

Get Latest Price
Min. Order / Reference FOB Price
1 Piece US $500/ Piece
Port: Tianjin, China
Production Capacity: 5000000 PCS
Payment Terms: T/T, Paypal
Type: Drill Collar
Technique: Hot Rolled
Material: Carbon Steel
Surface Treatment: Copper Coated
Usage: Boiler Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Chemical Industry, Mining
Section Shape: Special Section

You Might Also Like

Loading...

Basic Info

Model NO.: Drill Collar
Color: Golden and Other Colors
Trademark: Superior Brand
Transport Package: Wooden Cases for Sea Shipment
Specification: All specifications
Origin: China
HS Code: 843143100

Product Description

) Description
A drill collar is a device used in the drilling of oil wells for weighting the drill bit, enabling it to drill through rock. It is a bar made of solid steel, either plain carbon steel or a non-magnetic steel alloy, drilled lengthwise to permit the passage of drilling fluids. A drill collar forms the lowest element of a drill string, which encompasses all the elements of a down-hole process from the surface to the rock bit.
 
6) Structure
These devices are typically 31 feet (about 9.45 m) long and threaded at both ends, male at one end and female at the other, to allow multiple drill collars to be joined above the bit assembly.
 
The number of drill collars attached to a drill string will depend upon the material composition of the strata at the drill site and the likely depth of the well. A relatively shallow well with less dense geologic structure through which the bit must pass will require fewer drill collars than a deep shaft through dense material.
 
Typically, drill collars will be consistent in length but may vary in diameter, and their outside configuration may be slick or spiral. The outside diameter may vary from about 3-1/2 inches (8.89 cm) to 11 inches (27.9 cm) and greater. The reference to slick or spiral outer configuration refers to the machining of the outside surface of the collar.
 
7) Parameter

Type
OD(mm)ID(mm)
L(m)
±152.4mm
d

DF(mm)    
±0.4

NC23-31
79.431.89.1476.2
NC26-3588.938.19.1482.9
NC31-41104.850.89.14or9.45100.4
NC35-47120.650.89.14or9.45114.7
NC38-5012757.29.14or9.45121
NC44-60152.457.29.14or9.45144.5
NC44-60152.471.49.14or9.45144.5
NC46-62158.857.29.14or9.45149.2
NC46-62158.871.49.14or9.45150
NC46-65165.157.29.14or9.45154.8
NC46-65165.171.49.14or9.45154.8
NC46-67171.457.29.14or9.45159.5
NC50-70177.857.29.14or9.45164.7
NC50-70177.871.49.14or9.45164.7
NC50-72184.271.49.14or9.45169.5
NC56-77196.871.49.14or9.45185.3
NC56-80203.271.49.14or9.45190.1
6-5/8REG209.671.49.14or9.45195.6
NC61-90228.671.49.14or9.45212.7
7-5/8REG241.376.29.14or9.45223.8
NC70-97247.676.29.14or9.45232.6
NC70-10025476.29.14or9.45237.3
8-5/8REG279.476.29.14or9.45266.7
NC50-67171.571.49.14or9.45159.5

 

Send your message to this supplier

*From:
*To:
avatar Miss Fiona
*Message:

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now