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JGI,Inc.

Land Seismic Survey System

In recent years, there has been a growing demand for seismic data acquisition systems capable of handling several thousand channels, which in tern requires the handling and processing of large volumes of data. JGI owns land seismic data acquisition systems such as the SERCEL 428XL and has implemented systems for deploying high-channel-count field units across survey areas. These data acquisition systems consist of the following equipment.

    Cable system (refer to conceptual diagram of cable system). 

  • ① Geophone (velocity sensors), MEMS accelerometers, etc.
  • ② Data acquisition system – converts analog signals from sensors to digital data and transmits them in near real-time to the central recording system installed in a recording truck.
  • ③ Battery units
  • ④ The recording truck centrally manages the large volumes of multichannel data transmitted from the field units, and provides data display and storage as needed. It also monitors the status of the sensors, data acquisition units, and battery units, and controls data acquisition parameters.

    Cable-free system (refer to the conceptual diagram)

  • ① Analog geophone (velocity sensors) , etc.
  • ② Data acquisition system – converts analog signals from sensors to digital data and stores in recording media. The data at each receiver point are retrieved on-site as appropriate, then merged and verified for each survey line.
  • ③ GPS unit – used for GPS absolute time synchronization among multiple cable-free systems, integrated inside the enclosure of above-mentioned system.
  • ④ Battery unit

JGI owns approximately 5,000 channels of land data acquisition systems and conducts 2D/3D seismic surveys using cable and cable-free systems depending on terrain and environmental conditions.

- Land Seismic Exploration System Image

Technical specifications

・Recording truck and Seismic Data Recording System

- Seismic Reflection Survey Vehicle (Onshore)
【[Recording Truck for Seismic Survey on land]
【SERCEL - 428XL Exploration Vehicle (Interior)
[SERECEL 428XL Seismic Data Recording System (inside the recording truck)]

・Cable system

- SERCEL 428XL Cabled System (Communication and Power Cable Deployment) 01
- SERCEL 428XL Cabled System (Communication and Power Cable Deployment) 02
[SERECEL 428XL Cable System (deploying telemetry and power cables)]

・Geophone

- Geophone (Velocity Type)
[Geophone (velocity sensor)]
MEMS Accelerometer
[MEMS accelerometer]
Geophone (Mounted on Stand over Asphalt)
[Geophone placed on asphalt using mounting plates]
- Geophone (Spike Planted in Soil)
[Geophone placed on ground]

・Cable-free system

SERCEL UNITE (Example of Dense Deployment in Shallow Seismic Reflection Surveys)
[SERECEL UNITE Cable-Free System
(dense development for a shallow-subsurface
reflection survey)]
Geospace GSR (Installed on Snow)
[Geospace GSR (placed on snow)]
Geospace GSR (Installed Along Roadside)
[Geospace GSR (placed on the roadside)]
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