As a downhole tool for coal mine directional drilling, gas storage, and CBM production, non-magnetic stabilizers for coal are designed for coal mines' operating conditions (narrow road, soft/fractured coal seams, high humidity, coal dust, and safety requirements) and perform the following tasks:In coal mine drilling, a non-Magnetic measurement region is designed to eliminate magnetic field noise from specialized downhole tools including gas concentration sensors, coal seam trajectory detectors, and geological logging tools, to allow accurate borehole placement and reliable data collection of the coal seam. These components are coupled with the borehole wall, and stabilize the drill string in soft or broken coal seams by minimizing drill string vibration, eccentricity, and wobble, which prevents borehole collapse and improves wellbore quality.These are very lightweight and allow for easier integration with mine drilling rigs and in narrow underground environments.They can handle very harsh coal mine downhole conditions (high humidity, dust abrasion, moderate pressure), corrosion resistance, blade wear resistance, and mechanical stability, to provide long-term reliable operation without compromising safety.
We are capable of producing a variety of standard-grade products and providing customized services based on demand. Reference data for some models are as follows:
The products are manufactured in full compliance with API 7-1 and ISO 9001 standards. With our complete testing equipment, we can provide product certification and supporting test data.
Exclusively engineered for coal mine downhole operations, non-magnetic stabilizers for coal focus on gas control, coalbed methane development, and coal mine geological exploration, with primary application across the following domains:
Underground horizontal directional gas drainage: They stabilize the drill string in soft high-gas coal seams, fending off borehole collapse and ensuring precise positioning of gas drainage channels. Their non-magnetic trait precludes interference with gas concentration sensors and trajectory measuring tools, boosting gas extraction efficiency and mitigating mine explosion hazards.
Pre-mining gas pre-drainage drilling: Acclimating to fractured coal seams, they dampen drill string vibration to avoid exacerbating coal seam fractures, thus preserving the integrity of gas drainage boreholes.
CBM directional production wells: Guiding the drill string to penetrate coal seams efficiently, uniform blade contact thwarts borehole deformation in soft coal seams. Non-magnetic performance underpins accurate measurement of coal seam thickness and gas content, facilitating efficient CBM extraction.
CBM exploration wells: Reliable stabilization is furnished for geological logging tools, avoiding magnetic field distortion of subsurface data and ensuring precise evaluation of CBM resource potential.
Coal seam thickness and distribution detection: In collaboration with downhole geological instruments, they enable accurate measurement of coal seam thickness free from magnetic interference, providing data support for coal mine mining planning.
Coal mine fault and water-bearing structure exploration: Within fault zones or water-bearing coal seams, they stabilize the drill string to maintain borehole stability, while ensuring no magnetic interference on fault position and water level monitoring instruments.
Mine roadway expansion directional drilling: Boasting a compact structure, they adapt to narrow underground roadways, guiding the drill string along the designed trajectory and avoiding collision with surrounding coal rock. Wear-resistant blades endure coal dust erosion, prolonging service life in dusty environments.
Since 2009, SHANXI ZHONGHE has specialized in the development and production of non-magnetic drilling tools. We maintain complete control over the entire manufacturing process, which includes the smelting, forging, and machining of non-magnetic materials. With strict quality control implemented at every stage, each individual product undergoes thorough inspection throughout the production process.We strictly adhere to the American Petroleum Institute (API) standards and primarily utilize materials graded P530, P550, and P650 in our manufacturing processes.
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