High-resolution marine seismic exploration
Overview of high-resolution marine seismic exploration
High-resolution marine seismic exploration technology
- Technology to precisely understand the subsurface structure
- Used for exploration of marine resources such as gas hydrates and aggregates in the shallow subsurface
- Used for ground investigation for various offshore construction such as undersea storage facility construction and pipeline installation
Principle of high-resolution marine seismic exploration
- Artificially generate sound waves near sea level
- Receive reflected waves reflected from the boundary of the strata below the sea floor
- Produce seismic sections to understand the subsurface structure through computer processing
Digital high-resolution marine seismic exploration technology
- Advanced digital exploration technology developed for the purpose of oil exploration applied to shallow geological exploration
- Identify the precise subsurface structure at intervals of several m to tens of cm
- Increase the resolution by Increasing the frequency band by reducing the volume of the seismic source when exploring the shallow stratum
- Increase the horizontal and vertical resolution by making the shot interval and data sampling interval dense
Survey arrangement
- Reduce the size and applied the advanced oil exploration technology suitable for high-resolution exploration environment
- Increase the horizontal resolution by making the shot interval dense
- Increase the vertical resolution with a dense sample interval (0.1~0.5 msec)
- Measure the position of the vessel using GPS
Array of vessel, seismic sources and receivers for high-resolution marine seismic exploration
Exploration equipment configuration
- The survey equipment consists of the source unit that generates the sound source, the receiver unit that receives the data and the recording unit that records the seismic data
- The source unit includes sound sources such as air guns, sparkers, or boomers and sound source control system
- Receiver unit consists of streamer cable and power supply
- The recording unit is a PC-based digital data acquisition and processing system SeisDaps, analog filter and thermal recording equipment
Composition of high-resolution marine seismic exploration equipment and SeisDaps data acquisition and processing system