High Strength RC Drill Pipe With Advanced Thread Connection

Product Introduction

The reverse circulation drill pipe is a core component of reverse circulation drilling technology. Its design and performance directly affect drilling efficiency, cuttings handling effectiveness, and overall operational safety. Key features include:

It employs a double-layer hollow structure, consisting of an outer tube and an inner tube. An annular channel is formed between the outer and inner tubes for injecting compressed air or drilling fluid. The inner tube serves as a return channel for cuttings and fluids, transporting bottom-hole debris to the surface at high speed. This enables highly efficient reverse circulation cuttings removal, making it particularly suitable for large-diameter boreholes and complex formations.

The drill pipe joint typically uses a double-seal ring (such as nitrile rubber O-rings) + conical surface sealing structure to withstand negative pressures exceeding 0.1 MPa, preventing mud leakage. Connection methods include traditional threads (such as API standard threads) and new spline connections.

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