Non-magnetic Hanging Pup Joint

I. Core functions

1. Carrying and protecting measuring instruments: Its core function is to provide exclusive installation and suspension space for MWD instruments, equivalent to a "protective cabin" for instruments underground. This component can fix the position of the instrument, avoiding severe vibration and high-pressure drilling fluid impact during drilling that can damage precision instruments, while creating a stable working environment for the instrument.

2. Isolation of magnetic field interference: As a non-magnetic component, it can isolate the magnetic field interference generated by surrounding drilling tools and other magnetic materials, creating a non-magnetic measurement environment for MWD instruments and preventing deviations in key data such as azimuth angle and wellbore inclination angle, which is crucial for precise positioning of directional drilling.

3. Connect the drilling tools and conduct the drilling fluid: In the drilling tool assembly, it can accurately connect with non-magnetic drill collars, weighted drill rods and other components through threads at both ends, transmitting the torque and pressure required for drilling. And there is a smooth flow channel inside, which can ensure the smooth passage of drilling fluid without affecting the cooling and sand carrying function of the drilling fluid on the drill bit.

II. Core features

1. Extremely low magnetic permeability, which can avoid self generated magnetic fields and also block external magnetic field conduction;

2. High strength, capable of withstanding complex loads such as high pressure and alternating torque underground, preventing fracture and deformation;

3. Corrosion resistance, suitable for corrosive media such as acid and salt spray underground;

4. The structure is stable, and after forging and heat treatment, it can resist vibration and impact during drilling, ensuring the connection and sealing with other drilling tools.

III. Implement standards and application scenarios.

1. Implementation standards: The production process must strictly follow the API Spec 7-1 international standard and the domestic SY/T 5144 standard. Some scenarios can also be customized according to the DS-1 standard to ensure that core indicators such as thread accuracy and magnetic properties meet the standards.

2. Applications: Non magnetic hanging pup joint is widely used in directional drilling of oil, natural gas, coalbed methane, coalfield exploration, non excavation crossing and other fields. For example, in shale oil directional drilling and coal mine gas extraction directional drilling operations, its use with MWD instruments is a key component to ensure accurate drilling trajectories and reliable measurement data. In addition, some customized products can also be adapted to special non-magnetic drilling or testing equipment in military, chemical and other fields.