Abstract

Summary Coiled geophone arrays have been a mainstream recording system in land seismic acquisition in China for their high signal-to-noise ratio and relatively low cost. However data recorded by coiled geophone bunches have a limited bandwidth, especially a loss in high-frequency contents. Micro Electro Mechanical System (MEMS) accelerometers have been introduced in land seismic acquisition for their benefits in broadband signals. The study area consists of two surveys, one acquired by arrays of coiled geophones while the other one acquired by single point MEMS accelerometers. The target in the study area is high-heterogeneous lacustrine fan delta system. It demands on high-resolution seismic data processing. Therefore, we adopted a survey matching workflow based on geophone transformation to perform a deterministic geophone-to-accelerometer match to minimize the impacts from geophone types and sampling differences. The transform takes device properties, such as natural frequency, damping factor and sensitivity. The workflow minimalizes inherent device differences and acquisition differences between two surveys, which benefits subsequent high-resolution signal processing and imaging for the thin sand body reservoir from lacustrine delta fan.