API Spiral Drill Collar and Non-Magnetic Drill Collar Nmdc P550

• After-sales Service: 1 Year
• Warranty: 1 Year Warranty
• Certification: API
• Surface Treatment: Polishing
• Centralizer Type: Semi-Rigid
• Structure: Slider
• Model NO.: spiral collar
• Material: Stainless Steel
• Type: DV Collar
• OEM: Yes
• Steel Standard: P550
• Transport Package: Standard Wooden Block
• Specification: multiple
• Trademark: TIANHE
• Origin: China
• HS Code: 8431431000
• Production Capacity: 500000t

Product Description

Drill Collar is the basic component in the BHA which provides weight on the bit for drilling and keeps the drill string in tension.

TIANHE Drill Collar is manufactured from AISI 4145H modified quenched and tempered steel and is heat treated along its entire length for uniform toughness and durability.Strict metallurgical tests are performed per specifications to ensure that the heat treatment produces consistent and maximum hardness through the depth of the bar.

Features and Benefits

A hardness range of 285 to 341 BHN and a Charpy impact value of 40 ft-lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature;

Connections are phosphate coated after machining to protect the threads from corrosive elements and to 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.

The Non-magnetic drill collars function as a housing for the MWD tools, while at the same time provide the weight for drill string. TIANHE non-magnetic drill collars are suitable for all types of drilling including straight and directional applications. Each drill collar is fully inspected by our internal inspection department.All data obtained are recorded on the inspection certificate furnished with each drill collar. API monogram, serial number, OD, ID, type and size of connections are stamped on the recessed mill flats. We manufacture three type of non-magnetic drill collars according to the customers' order; include Slick, Spiral, and Flex Non-Mag Drill Collars. 

 

Slick Non-Mag Drill Collar 

TIANHE Slick Non-Mag Drill Collar provides the required weight on bit, and will not interfere with the directional drilling ability.

 

Spiral Non-Mag Drill Collar 

TIANHE Spiral Non-Mag Drill Collar is designed to allow greater flow area for drilling fluids, while providing the benefits of non-mag steel  for complex drilling programs.

 

Flex Non-Mag Drill Collar 

TIANHE Flex Non-Mag Drill Collar is thinner and more flexible than standard drill collar. Their ability to make short radius turns, bend for high build angles, and pass through severe doglegs makes them ideal for use in directional and horizontal applications. Manufactured with non-mag steel, this drill collar is well suited for housing MWD equipment.