通过在共炮点道集和共检波点道集内对Walkaway VSP资料进行分析,使得初至拾取更加合理准确,为速度模型的准确构建建立前提;使得波场分离过程中去噪更彻底,获得的有效波场更加理想,为偏移成像质量的提高打下基础。最终使Walkaway VSP资料在井旁精细构造识别及薄互层描述中发挥更大的作用。 By analyzing the Walkaway VSP data in common shot gathers and co-channel gathers, the first-arrival pick-up is more reasonable and accurate, which establishes the premise for the accurate construction of the velocity model. The denoising in the wave field separation process is more complete and the The effective wave field is more ideal, laying a foundation for the improvement of the quality of offset imaging. Eventually making Walkaway VSP data play a greater role in fine-well identification and thin inter-layer characterization.