低信噪比资料处理方法探讨

Low noise-signal ratio seismic data process discussion

某区地震资料特别是低降速带厚度变化,地震资料信噪比低,在资料处理中通过采用建立全区统一浮动基准面以及层析静校正的方法解决该区静校正问题,根据资料特点,针对性地开展叠前叠后去噪技术,同时优选偏移方法,开展偏移试验,优化处理流程在处理中见到了良好的效果。

In a certain seismic acquisition area,near surface topography variation influences the data quality.To remove the effect ofweathering layer,tomographic method is used based on a regional floating datum and the static problem is solved. In the data processing,targeted tests for noise attenuation pre/post stack are fully carried out.Besides,proper migration parameters are carefully selected. Byoptimizing the data processing flow,fine results can be achieved.