Concentric Bit for DTH Water Drilling Projects Drilling Rig Tools

Product Description

The concentric / symmetrical drilling system is an efficient integrated drilling and casing technology, especially suitable for environments with unstable formations. This system uses a removable or reusable ring drill bit to speed up the drilling process and maintain the straightness of the borehole. Its internal flush tank and casing shoe design provide excellent sealing while reducing formation disturbance.

This system is widely used in the construction of water wells, geothermal wells, building foundations, dams and ports, etc. It is mainly used for drilling short holes and small and medium - sized grouting holes.

Technical Parameters

Operation Process

1 . Weld the trephine bit and casing shoe to the casing and lock it firmly on the pilot bit by tapping.

2 . The impact energy is transmitted through the pilot bit and the trephine bit, effectively breaking the rock and advancing the casing.

3 . After drilling and casing operations are completed, remove the drill string with the pilot bit by gentle counter-rotation and unlock the latch connection. The trephine bit remains in the hole and is only removed when retrieving the casing.

4 . Finally, continue drilling into the bedrock to the predetermined depth using traditional drilling techniques.

The advantages of this drilling system are its integrated design and efficient operating procedures, making it ideal for drilling in unstable formation conditions.

Machine Pictures

Henan Rancheng Machinery Co., Ltd., located in the historically renowned city of Zhengzhou, Henan Province, China, has been dedicated to the design and manufacturing of drilling rigs, mud pumps, air compressors, and drilling tools since its establishment in 2010. With deep industry experience and continuous innovative exploration, the company has gradually established a good reputation and influence in the industry.

Over the years, we have always adhered to the principle of quality first, committed to providing customers with high-quality, high-performance drilling equipment. Our series of drilling rigs not only have powerful drilling capabilities but also are easy to operate, adapting to various complex geological environments. As essential auxiliary equipment for drilling operations, mud pumps and air compressors have also received a great deal of attention to ensure their stable and efficient operation.

Our Agent In Foreign

We already have professional agents in Bulgaria, Russia, Romania, and Serbia. These experienced representatives not only offer accurate recommendations for equipment selection but also provide comprehensive technical support, including equipment installation and commissioning, routine maintenance, and troubleshooting.

With the support of local agents, you can enjoy timely, efficient communication and reliable after-sales service, ensuring a smooth and worry-free purchasing and usage experience.

We warmly welcome new partners from more countries to join us in delivering high-quality drilling equipment and professional services to customers worldwide.