Gold Member Since 2017
Audited Supplier
Beijing Superior Drilling Equipment Co., Ltd.

Drill Collar, Tube, Oil Tube manufacturer / supplier in China, offering High Quality API Oil Drilling Tool Threaded Drill Collar Low Price, 9 1/2′′ Steel Tooth Rock Roller Gas Water Oil Drilling Tricone Bit From China, 2017 New Gas Water Oil Drilling Equipments PDC Bit Steel Body and so on.

(/ )

Supplier Homepage Product 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

FOB Price: US $500 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $500/ Piece
Get Latest Price
Production Capacity: 5000000 PCS
Transport Package: Wooden Cases for Sea Shipment
Payment Terms: T/T, Paypal
Basic Info
  • Model NO.: Drill Collar
  • Technique: Hot Rolled
  • Surface Treatment: Copper Coated
  • Section Shape: Special Section
  • Trademark: Superior Brand
  • Origin: China
  • Type: Drill Collar
  • Material: Carbon Steel
  • Usage: Boiler Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Chemical Industry, Mining
  • Color: Golden and Other Colors
  • Specification: All specifications
  • 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
Avatar
Miss Salina
*From:
To: Miss Salina
*Message:

Enter between 20 to 4,000 characters.

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

Find Similar Products By Category