Mountain-front seismic acquisition and processing

Quality control measures for seismic exploration data acquisition in front of Longmen Mountain

“…Since 2002, the author has participated in the deployment, design, implementation, and quality management of more than ten 2D and 3D seismic exploration projects in front of Longmen Mountain. The recently organized Longmen Mountain Front Seismic Exploration Project has strengthened the analysis of surface geological characteristics and proposed targeted quality control measures in complex terrain and dense forest areas [1][2][3][4], well completion in mountainous areas with large pebbles, layout of survey lines in high and steep complex mountainous areas, and control of active and passive interference sources. These measures have effectively improved the quality of collected data and work efficiency, and can provide reference for seismic exploration in complex mountainous areas.…”

“…The completion of shot wells in the gravel covered area has always been a difficult problem for exploration in the mountain front. In the early stages, the main mode of excitation was through surface shallow well explosives, which resulted in less downward energy transmission and difficulty in achieving imaging of deep exploration targets [4]; Later, the excitation method of digging large pits with excavators was adopted, and the energy was significantly enhanced, but the noise was also very obvious, and the signal-to-noise ratio of the data was significantly reduced. Obtaining raw data with wide excitation frequency band, strong energy, and high signal-to-noise ratio in pebble covered areas is crucial to ensure deep drilling.…”