114mm Reverse Circulation Double Wall Drill Pipe

Product Introduction

Reverse Circulation Double Wall Drill Pipe is a specialized drill pipe used in drilling operations. It's commonly employed in Reverse Circulation Drilling, a method that involves creating a reverse flow of cement slurry within the drill pipe to transport cuttings from the bottom of the borehole to the surface.The unique structural design of the Reverse Circulation Double Wall Drill Pipe assigns distinct roles to the inner and outer walls, facilitating the transmission of cement slurry and cuttings, effectively preventing groundwater pollution, and enhancing cuttings recovery. This type of drill pipe is suitable for drilling operations that require safeguarding groundwater resources, improving cuttings recovery, and preventing environmental pollution.

Features of Reverse Circulation Drilling Machine:

Double Wall Construction: The drill pipe consists of an inner and outer tube, which allows for reverse circulation. This means that the drilling fluid or air can be pumped down the annulus between the two walls and return up the center, carrying cuttings to the surface.

Reverse Circulation Capability: Unlike conventional drilling methods, RC drilling allows for the collection of uncontaminated samples from specific depths. The sample is protected from mixing with material from other depths, ensuring high-quality data.

114mm Diameter: The 114mm diameter is specifically designed to balance strength, weight, and handling ease while providing sufficient internal volume for effective reverse circulation.

High-Strength Steel: Typically made from high-strength steel, these drill pipes can withstand the rigors of deep and hard-rock drilling.

Sealing System: Advanced sealing systems prevent leakage and ensure that the drilling fluid or air remains within the system, enhancing safety and environmental protection.

Connection Design: Specialized connections are used to ensure a secure and leak-proof seal between sections of the drill pipe, facilitating quick and easy assembly and disassembly.

Corrosion Resistance: Often coated or treated to resist corrosion, extending the lifespan of the drill pipe in various drilling environments.

Technical Specifications

Advantages

• Groundwater Protection: The dual-wall structure significantly reduces the risk of groundwater contamination.

• Efficient Reverse Circulation: Specially designed for high-efficiency reverse circulation operations, enhancing debris recovery.

• Durability and Stability: Constructed from highly durable materials, suitable for various geological conditions.

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Technical features

• 1.Compared with the positive circulation drilling, the drilling efficiency is greatly improved because the cuttings are returned from the inner tube, the return speed is fast, the ability to carry cuttings is strong, and the bottom of the hole is clean;

• 2. Because of no water or very little water consumption, It's especially suitable for drilling in dry and leaky formations;

• 3. If the outer flat double-arm drill pipe is used, it can solve the problem of drilling in collapsed, broken and shrinkage formations;

• 4. Air, air atomization, air foam, foam mud, Mud or clean water is used as the flushing medium, which belongs to the multi-process medium drilling technology.

• 5. According to the characteristics of the formation and the flushing medium, various types of drill bits can be used for drilling.

Working Principle

Applicability

Ideal for efficient, safe, and eco-friendly drilling operations, particularly in scenarios where groundwater protection is crucial, such as mining exploration, water well drilling, among others.

Conclusion

The Reverse Circulation Double Wall Drill Pipe stands as an innovative and efficient drilling tool, offering a reliable solution for groundwater protection, enhanced debris recovery, and reduced environmental impact. Contact us to discover more about this groundbreaking product.