Introduction to various types of cables: earthquake cables

2026-03-17

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Seismic cables are specialized equipment used for seismic exploration, mainly for transmitting seismic wave signals or connecting detectors and acquisition systems. They are widely used in the fields of oil, gas, and geological exploration on land and in the ocean. The following are its core classifications and technical features:

1 Definition and function of earthquake cables

Seismic cables are a key component of wired seismic instruments, responsible for the following core functions:

Signal transmission: Transmit seismic wave analog signals or digital signals collected by detectors to recording equipment.
Power supply and command transmission: Some cables need to supply power to the detector and transmit control commands.
Environmental adaptability: It needs to meet the requirements of complex outdoor environments (such as corrosion resistance, tensile strength, waterproofing, etc.).

2 Usage requirements and structural characteristics

Usage characteristics	structural features
1. Land use: small outer diameter, light weight, soft, wear-resistant, bending resistant, weather resistant, water-resistant, anti-interference, good insulation performance, easy identification of core wires, and convenient assembly.	The wire is insulated with a soft structure or thin enameled wire, and the core is twisted and color coded. The insulation is made of a material with a low dielectric constant, and the sheath is made of polyurethane material.
2. Aviation use: non-magnetic, tensile resistant, small outer diameter, light weight.	Copper Conductor
3. Marine use: Good sound transmission, water resistance, moderate floating, able to float at a certain depth underwater, with good resistance to tension, bending, and interference.	Specialized sound transmitting material, reinforced wire core or armored foam inner sheath to adjust buoyancy.

3 Key technical parameters and industry standards

Core indicators:
- Transmission distance: Digital cables can reach several kilometers (ocean cables require relay transmission).
- Anti interference capability: Shielded cables (such as KVVP) can attenuate electromagnetic interference by more than 30dB.
- Environmental tolerance: high temperature resistance (such as fluoroplastic cables at 200 ℃), salt spray resistance (chloroprene rubber sheath).
Industry standards:
- SY/T 5192: Standardize the performance of land seismic exploration cables.
- SY/T 10017: Technical specifications for seismic data acquisition of submarine cables.

4 Application Fields and Market Trends

Main applications:
- Oil/gas exploration (dominant in the global market).
- Engineering geological exploration (such as hydropower and coal mines).
Technological Trends:
- High density acquisition: Shorten the distance between detectors (such as 3.125 meters) to improve resolution.
- Intelligent upgrade: Integrating FPGA and ARM chips to achieve real-time data processing.

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