Xinyongjia 2 7/8 Inch Non-Magnetic Hydro- Pneumatic Combination Screw Drilling Mud Motor

Product Introduction

The K7LZ73X7.0-4 stands as a specialized 2 7/8 inch non-magnetic hydro-pneumatic combination screw drilling mud motor, engineered specifically for the demanding environments of underground coal mines. Forged from high-strength non-magnetic alloy, the outer housing presents a smooth, robust metallic finish that actively resists abrasive wear. This advanced material composition ensures exceptional durability and full compatibility with complex fluid mediums, including highly acidic, oil-based, and high-salt drilling muds, significantly extending the tool's operational lifespan in harsh downhole conditions.

Designed with a fixed 1.25° bend housing, a 2 3/4 CHD upper thread, and a 3NRD lower thread, this motor facilitates rapid and secure assembly on the rig floor. The precision-machined spiral groove design dramatically boosts slag discharge efficiency, preventing blockages during intense drilling operations. Meanwhile, the non-magnetic body guarantees zero interference, allowing for highly accurate Measurement While Drilling (MWD) readings. Delivering stable, continuous torque, this coal mine Positive Displacement Motor (PDM) runs reliably even in soft, loose coal seam working conditions, ensuring your extraction projects proceed without unexpected downtime.

Product Advantage

KY7LZ73X7.0 Non-Magnetic Hydro-Pneumatic PDM Drilling Motor

1.This coal mining screw drilling mud motor adapts to hard coal seams and coal-rock interlayers, acting as a durable hydro-pneumatic downhole motor for underground gas drainage drilling.

2.Fitted with professional oil seal transmission assembly, the non-magnetic PDM mud motor reduces internal leakage and maintains steady power output for mine directional drilling work.

3.The dual-fluid screw drilling downhole motor supports instant switch between air and liquid drive without motor replacement, greatly lifting construction efficiency for underground coal mine drilling.

Technical Parameters

Product Uses

1. Coal Mine Gas Drainage Drilling

   This 2 7/8 inch small-size mud motor delivers steady, reliable torque specifically tailored for underground horizontal boreholes. Its compact outer diameter is perfectly sized to navigate narrow, confined mine tunnels without compromising on power. By providing a consistent rotational force, it supports highly efficient coalbed methane extraction and complex underground gas drainage construction, ultimately enhancing the safety and productivity of your mining operations.

2. Coal Mine Roadway & Side Drilling

   Engineered for spatial constraints, this miniature hydraulic steel screw motor adapts flawlessly to limited underground spaces. It performs precise sidetracking and branch hole drilling directly into dense coal rock layers. The motor's responsive handling and stable output significantly improve construction efficiency for mine roadway reinforcement works, ensuring structural integrity while minimizing time spent on directional adjustments.

3. Coalfield Geological Exploration Drilling

   The Xinyongjia drilling mud motor serves as an indispensable tool for rigorous coalfield geological surveys. Its stable power output effortlessly handles mixed coal-rock formations, preventing stalling or erratic drilling behavior. This makes it exceptionally suitable for short-distance directional exploration holes in underground coal mining projects, providing geologists and engineers with the accurate trajectory control needed to map out future extraction zones.

Product Operate Guide

Xinyongjia Downhole Motor Manual(Chinese -English)

Download