Non-Magnetic Slick Drill Collars

ROSCHEN Supply Group offers new drill collars. Drill collars comprise about one-third of all product sales for ROSCHEN Supply Group. The new drill collars we provide come from only reputable steel manufacturers and are made to outperform all industry requirements.

In their initial phase of manufacturing, drill collars are solid round bars of 4145 carbon steel. The bars are then quenched and tempered in a heat treatment process to attain the required metallic properties and hardness for drilling. Once heat treatment is complete, a hole is machined through the bar in a coring/honing process known as trepanning. This hole is better known as the ID or the inner diameter. After the trepanning is complete, the ends are machine threaded which makes the connections.

Non-Magnetic Slick Drill Collar 4.750” NC38

Non-Magnetic Slick Drill Collar 6.750” NC50

Non-Magnetic Drill Collar 8.000” x 6 5/8” REG Drill Collar

Non-Magnetic Drill Collar 8.250” x 6 5/8” REG

Non-Magnetic Drill Collar 9.500” x 7 5/8” REG

Non-Magnetic Drill Collar 9.500” x 7 5/8” REG

Non-Magnetic Drill Collar 9.500” x 7 5/8” REG

About Drill Collars

Drill collars are extremely heavy-duty industrial tubular used to drill into the ground and are used in conjunction with drill pipe. While drill pipe makes up the majority length of a drill string, drill collars make up only a small amount. For example: a 10,000ft drill string may be comprised of 9,000ft of drill pipe, and only 500ft of drill collars. Much like drill pipe, drill collars are made in 31ft lengths and are screwed together vertically on the drilling rig. In contrast, to drill pipe, drill collars are thick-walled and heavy, with very limited flexibility. Drill collars are used at the bottom of the drill string, just above the drill bit. They are used mainly for weight on the drill bit but also work as a shock absorber to dampen the vibrations and impact forces caused by drilling. There are two main types of drill collars, slick or spiral grooved, however, both styles accomplish the same task. Spiral groove drill collars were introduced in more recent years and are thought to help prevent the drill string from getting stuck in the hole by allowing drilling debris and lubricant to pass more freely around the drill collar.

For more information please contact:

Skype: ROSCHEN.TOOL , ROSCHEN_GROUP

WeChat: +86-137 6419 5009 ; +86-135 8585 5390

WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390

Email: roschen@roschen.com ; roschen@roschen.net

Website: http://www.roschen.com ; http://www.roschen.net

 ROSCHEN GROUP

ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.

ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.

ROSCHEN Manufactory PROCESS

ROSCHEN Sales Value Growing Up!

ROSCHEN'S MISSION

1. Strive to create and supply Best quality products for the industry that last longer than the average products.

2. Provide excellent service for our clients.  24 hour-7 days /week schedule to get our clients what they need – FAST.