As a critical non-magnetic protective component for downhole measurement probes, precision sensing instruments, and scientific detection equipment, non-magnetic probe outer tubes are designed to provide a stable, interference-free, and harsh-environment-resistant housing for internal probes. Their primary functionality is as follows: A porous nonmagnetic cavity eliminates magnetic field interference (scurgue strings, formations, industrial equipment) of internal precision probes (e.g., MWD/LWD, geological logging probes, gas detectors) and captures measurements (trajectory, formation, gas concentration etc.).Physical shielding of internal probes, in case of extremely harsh operating conditions (high temperature, high pressure, corrosion from formation fluids/chemicals, abrasion from rock or coal dust) for the avoidance of probe damage, deformation, or contamination.A sealed precision-machined structure.They perfectly fit internal probes - blocking external impurities (drilling fluid, dust, moisture) from penetrating the tube, allowing smooth signal transmission (wireless and wireless probes). They adapt with different probe sizes and applications, having flexible sizes and structures (threads, quick releases) to fit different probe designs and installation designs.Structural stability for cyclic load or vibration (drainings, equipment movements, etc.), avoiding mechanical fatigue that could affect probe position or measurement accuracy.
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.
Non-magnetic probe outer tubes are widely applied in fields requiring precise measurement, non-magnetic interference, and probe protection under harsh conditions, mainly in the following areas:
Downhole MWD/LWD probe protection: Serve as the outer housing for trajectory measurement probes, formation resistivity probes, and pressure sensors in directional/horizontal wells. The non-magnetic property ensures accurate data collection without interference from drill strings or formations, while the high-pressure (≥150MPa) and high-temperature (≤280°C) resistance adapts to deep/ultra-deep well environments.
Offshore drilling probe protection: Resist seawater corrosion and subsea high pressure, protecting subsea MWD probes from marine environmental damage and magnetic interference from platform structures.
Coal mine gas detection probes: House gas concentration sensors and coal seam logging probes in underground coal mines, with corrosion resistance to high humidity and coal dust, and non-magnetic performance avoiding interference with safety monitoring data. The sealed structure prevents coal dust and moisture from entering, extending probe service life.
Coalbed methane (CBM) exploration probes: Protect CBM content measurement probes in soft coal seams, ensuring accurate resource evaluation data while withstanding moderate pressure and vibration during drilling.
Deep geological logging probes: Serve as the outer tube for mineral exploration probes, geomagnetic survey probes, and geothermal reservoir sensors. The non-magnetic property eliminates magnetic field distortion from deep formations, ensuring reliable collection of subsurface geological and mineral data.
Scientific research precision probes: Used in environmental monitoring probes (soil, water quality) and deep-sea exploration probes, providing non-magnetic and corrosion-resistant protection for sensitive detection components in extreme field conditions.
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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