High Performance Trenchless Drilling Equipment Drill Collar Providing Weight

High Performance Trenchless Drilling Equipment Drill Collar Providing Weight

Description

Drill collar is a component of a drill string that provides weight on bit for drilling. This kind of trenchless tool is a thick-walled tubular piece that is machined from a solid bar of steel, usually plain carbon steel but sometimes of nonmagnetic nickel-copper alloy or other nonmagnetic premium alloys. The solid bar is quenched and tempered to obtain the required mechanical properties, then trepanned, drifted and threaded. Located at the bottom of the drill string, drill collar is a major component of bottom hole assembly. The main characteristic of this trenchless tool is thick wall (It is generally between 38 mm to 53 mm and is equivalent to 4 to 6 times of that of drill pipe), larger gravity and stiffness.

Classification

It is usually classified into spiral type, non-magnetic type and integral drill collars. Our company is able to supply 18T-800T drilling machines for both home and foreign drilling rig factories. Customers can choose the most appropriate trenchless tools according to their specific demands.

Functions of Drill Collar

In the process of well drilling, it plays an important role as follows:

1. It provides pressure on drill bit for drilling.

2. It can guarantee the necessary strength under a certain compression condition.

3. Drill collars can reduce the vibration, swinging and beating of drill bits, making the drill bit work smoothly.

4. This type of trenchless tool can control well deflection or well deviation.

To prevent a lower drill collar from burning and for optimal usage in straight drilling, three different

Methods can be used:

1. They can be selected that are as wide as possible and installed in the lower section, leaving enough space between the collars and the borehole walls to permit debris and drilling mud to pass.

2. A stabilizer or reamer may be installed in the drill collar assembly.

3. Blades can be welded to this trenchless tool so that its diameter is nearly the same as the borehole diameter.

4. The diameter and the male and female ends of the drill collars need to be monitored as they are more exposed to wear.

 Jiangsu Sinocoredrill Exploration Equipment Co., Ltd  a professional Chinese manufacturer specializing in mineral exploration drilling equipments in business to since 2008.Through the close cooperation with customers and business partners, Sinocoredrill is making continuous innovation for achieving its goal of superior productivity.Owing to our products' excellent performance and very competitive pricing, we successfully minimized our every customer's drilling cost per meter. we have profuse designs with series quality grade and expressly , our price is very competitive cause we're manufactory .

We has passed the quality system certification of GB/T19001-2008/IS9001:2008. Our company has also won the honors such as Jiangsu High-quality Product and Jiangsu Contract Compliance and Creditworthy Company. As the Chinese Specialist Of Geological Exploration Tools Manufactory And Supplier, our company is founded with the hard work of our employees for many years. Our company has developed into a professional manufacturer of drilling equipment and tools, such as HDD (No-dig) drill rod , , Wireline drilling rod and tools , various of diamond impregnated and surface-set core bit , reaming shell with the the automatic production line. 

Our company is mainly engaged in the production of B /N /H /P WL wireline core barrel drilling tools, drill rod , overshot assembly , diamond core bit ,reaming shell , full- hydraulic core drilling rig and mud pump for clients both at home and abroad.

With many years’ experience in the production and sale as well as strong technical ability, our company has offered the high-quality brand of SINOCOREDRILL  wholeheartedly, including the advanced CNC lathe, CNC machining center and CNC sintering diamond bit and reamer device. With a marketing network covering China, our company has given top priority to the quality and also targeted at the market.

By clinging to the concept of the quality and service being supreme, our company has set up a positive company image and won the wide acclaim from our clients. In order to offer better products and services as well as satisfy the growing requirement of the market at the lowest cost, our company has made great efforts to develop new product and innovate the technology. We have also sincerely welcomed those old and news clients to join us.