Complicated foothill area is characterized by complex near surface conditions and complex subsurface structures (so-called
“dual-complex”),which leads to poor seismic data and low S/N as well as non-ideal seismic imaging.According to the seismic &
geological conditions,seismic exploration difficulties and seismic data characteristics in the Southern and Western complicated
foothill area,a series of techniques and methods for the seismic acquisition in the area was formed in last ten years.The
technology series includes the evaluation of geometry design and optimization of shot and geophone locations and variable-
geometry operation based on the “dual-complex” model and “3S” (Remote Sensing,Geographic Information System,Global
Positioning System) technique,detailed near surface structure investigation and modeling technique,shot and vibroseis joint
shooting method,geophone coupling technology for special surface conditions,and noise suppression technique by using
geophone array according to the characteristics of interference wave.The technology series was applied in foothill areas at
Southern and Western china,and the seismic data quality was obviously improved,which showed its feasibility and effectiveness.
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