Abstract：The volcanic rocks developed in Sichuan Basin are well distributed in sources, reservoirs, and cap rocks with favorable conditions for hydrocarbon accumulation. High-quality volcanic porous reservoirs have been successfully drilled in Well YT1 in 2018, and thus the high-yield industrial gas flow was obtained. This proves that Permian volcanic rocks in Sichuan Basin have great oil and gas exploration potential. However, due to the low signal-to-noise ratio and imaging accuracy of previous seismic data, it is difficult to meet the needs of fine characterization for favorable faces of volcanic rocks and well location deployment. High-precision key acquisition technologies have been successfully applied to seismic exploration in volcanic rocks, including high-precision three-dimensional geometry design, shot and vibroseis joint acquisition operation, well depth design of dynamic stimu-lation, and low-frequency geophone receiving technology. As a result, the signal-to-noise ratio and resolution of the seismic data of the target layer have been greatly improved, and the seismic identification mode of volcanic rock effusive faces has been formed by using new data. The plane distribution of effusive and overflow faces of Permian volcanic rocks in this area has been effectively identified, which has greatly promoted the process of natural gas exploration in new areas and new fields of Sichuan Basin.
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