Abstract:There is wide application for Fresnel zone of seismic prospecting in aspects of optimizing geometry design,studying lateral resolution,determining optimum migration aperture and seismic interpretation. The paper gave three theoretical expressions of characteristic parameters of Fresnel zone with different offsets and approximate expressions associated with zero-offset in spatially horizontal interface and proved the importance of (first) Fresnel zone from the angle of energy. The theoretical analysis and numeric simulation showed that there exists critical offset only relative to dominant wavelength:along with the increase of the depth of reflecting interface,the radius (area) of Fresnel zone increases when the real offsets are less than critical offset and decrease first and then increase when the real offsets greater than critical offset,existing the issue of min Fresnel zone relative to large offsets.
袁三一, 王尚旭, 田楠. 相对大炮检距最小菲涅耳带[J]. 石油地球物理勘探, 2009, 44(4): 387-392.
Yuan San-yi, Wang Shang-xu, Tian Nan. Min Fresnel zone relative to large offsets. OGP, 2009, 44(4): 387-392.