As a key connecting and load-bearing component installed in the bottom hole assembly (BHA) of directional drilling, MWD/LWD (Logging While Drilling), and complex well drilling operations, non-magnetic suspension subs primarily serve the following functions:
Create a non-magnetic isolation zone in the downhole suspension system to eliminate magnetic field interference on MWD/LWD sensors and precision instruments connected to the suspension end, ensuring accurate collection of well trajectory, formation parameters, and suspension state data.
Realize stable suspension and fixation of downhole tools (such as logging probes, packers, and pressure sensors), bearing the axial load of the suspended components and preventing displacement or damage caused by downhole vibration and fluid impact.
Act as a connection bridge between the upper drill string and lower suspended tools, ensuring smooth transmission of torque and fluid medium while maintaining the integrity and tightness of the downhole fluid channel.
Withstand harsh downhole conditions (high temperature, high pressure, corrosion, and alternating loads), featuring excellent structural rigidity and sealing performance to adapt to long-term reliable operation in deep wells and complex formations.
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 suspension subs are widely applied in downhole operations requiring stable tool suspension, high-precision measurement, and reliable connection, mainly in the following fields:
Directional/horizontal oil and gas wells: Suspend near-bit MWD instruments and pressure sensors, eliminating magnetic interference to ensure accurate trajectory control and real-time monitoring of downhole conditions.
Deep/ultra-deep wells: Bear the load of heavy downhole tools under high-temperature and high-pressure environments, maintaining the stability of the bottom hole assembly and preventing tool drop accidents.
Unconventional oil and gas development (shale oil/gas): Adapt to the harsh working conditions of abrasive formations, stably suspending fracturing tools and ensuring the smooth progress of downhole fracturing and logging operations.
Coalbed methane (CBM) directional drilling: Suspend gas detection sensors and drainage tools in soft coal seams, ensuring accurate positioning of the tools and avoiding magnetic interference on gas concentration measurement data.
Mine roadway drilling: Fix and suspend downhole exploration instruments, preventing displacement caused by coal seam collapse and improving the safety and efficiency of mine drilling.
Mineral exploration in magnetic-sensitive areas: Provide a non-magnetic suspension platform for precision geophysical logging tools, ensuring accurate collection of subsurface mineral and geological structure data.
Geothermal well drilling: Withstand high-temperature (up to 230°C) downhole conditions, stably suspending temperature and pressure sensors and protecting the instruments from magnetic field interference and thermal damage.
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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