Drill Collar-Standard And Spiral
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.
Related products
GS (I) Type Casing Brusher is one of the indispensable auxiliary tools for well completion, testing and downhole operation. Its main purpose is to remove the residual attachments after the scraping operation of downhole casing inner wall scraper and protect the cleanness of casing inner wall, so as to facilitate the normal operation of all drilling tools. It is usually used with casing scraper.GS (I) Type Casing Brusher is not suitable for drilling operation.
GX-X Type Non-rotating Casing Scraper is one of the indispensable auxiliary tools for well completion, testing and downhole operation. The main purpose of the scraper is to remove cement, sand, residual bullets, scratches, paraffin, burrs and other attachments from the inner wall of the downhole casing, and protect the inner wall of the casing, so as to facilitate the normal operation of all drilling tools. Type B non rotating scraper is not suitable for drilling operation.
YTQC Type Drill String Fishing Magnet is one of the auxiliary tools to ensure the normal drilling operation and bottom hole cleaning in the process of downhole accident treatment. The main feature of this product is that it works together with the grinding shoes in the fishing operation, which is different from the previous method of lifting the drill after milling, and then connecting the drill string with the strong magnetic fishing tool to go down the well for cleaning bottom hole , saving a trip down the well operation, which not only saves the drilling cost, but also saves the fishing operation time.
Features and Benefits
● A hardness range of 285 to 341 BH N and a Charpy impact value of 40 lbs/ft 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
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;
