Product Drill Collar - China

Drill Collar is the basic component in the BHA which

provides weight on the bit for drilling and keeps the

drillsting in tension.

TIANHE Drill Collar has been approved by the NS-1

certification, it is manufactured from 4145H modified

quenched and tempered steel, strict metallurgical

specifications are followed to insure that full length heat

treating produces a consistent maximum depth of hardness.

Features and Benefits

A hardness range of 285 to 341 BHN and a Charpy impact value

of 40 ft-lbs are guaranteed at evenly distributed 16 points

in any sections at room temperature;

Connections are completed(phosphate coated)to protect them

from the elements after machining and to help prevent

galling upon initial make-up;

Thread roots are cold rolled on API and H-90 connections;

Pressed steel thread protectors are supplied for all drill

collar that are equipped with standard connections

When ordering Please specify;

Drill collar OD and ID;

Overall length;

Connections required (size and type);

Special features desired, for example:

Slick or Spiral;

Stress Relief Features;

Slip and/or Elevator Recess;

Hardbanding;

Company Contact:

• Posted By: Tianhe Oil

• Phone: 00862131150073

• Address: No.2999 Xinyang Road,Fengxian District, Shanghai , China

• Email:

• Website: http://www.tianheoil.com

• Business Description: Tianhe Oil Group is a comprehensive enterprise of equipment
  
  manufacturing and oilfield service providing.
  
  The company is specialized
  
  in innovation, manufacture and sales of drill and petroleum extraction
  
  tools, equipments and oil field services.
  
  Tianhe Oil Group is the council member of CPEIA (China Petroleum and Equipment Industry Association), rewarded as national level of Hi Tech enterprise.
  
  The company is a Chinese well known trademark enterprise.
  
  It has been certified to ISO, API, NS 1, and HSE management system.
  
  The company has developed a strong domestic sales network covering all oilfields of CNPC, SINOPEC and CNOOC.
  
  Currently, our products and equipments have been exported to 45 countries, overseas business has covered 80% of our company sales.