Analysis on the Technology and Application Effect of Contiguous Fine Processing of the 2D Historical Seismic Data in the South of Songjiaying
South area of Songjiaying is located in the southeast wing of Kaiping syncline in North China,with complex geological structure and abundant coal resources.However,due to the low resolution of early seismic data and limited data processing technology,some coal resources and geological structures have not been fully identified.In this paper,the tech-niques of refraction static correction,pre-stack denoising,surface consistent amplitude com-pensation,combined with deconvolution,high-precision velocity analysis and pre-stack time migration are used to process the 2D historical seismic data of three blocks in the south Songjiaying area.On this basis,the detailed seismic interpretation is carried out,and a new understanding of the stratum and structure is obtained,especially in the border zone with large closure difference among the three areas,the resolution and signal-to-noise ratio are ob-viously improved.After drilling verification,the minimum relative error of coal seam predic-tion depth is 0.24％,which proves that the fine processing interpretation method is reasona-ble and effective,and provides more accurate geological information for subsequent coal and comprehensive gas exploration.
Songjiaying southdata processingrefraction staticsnoise before stackampli-tude compensationtime shift before stack
NETL
NSTL
万方数据
维普
