The estimation of noise suppression of 3D recording geometry and its application

*Summary Using 3-D recording geometry can attenuate noise. Different geometries have different effects on noise suppression. At present, the popular estimation method for the noise suppression of 3-D recording geometry is qualitative analysis. The qualitative analysis can cause errors in a 3-D seismic survey design. In this paper, we present a quantitative parameter analysis method. First we compute the common midpoint (CMP) stack response of noise from the residual traveltime difference of the noise, and then average the CMP-stack response. Finally we estimate the noise suppression of the 3D recording geometry. According to the estimation of quantitative parameters, designers can make an appropriate choice from several 3D recording geometries. It is an efficient method for the optimization of 3D seismic survey design.