Based on the counted resul t of theoretical model,contrast and analyse the relationship between lo ngitudinal wave field and transformed wave field of coal -b ed with change of coal -bed fractures,and probe into the feasible method o n exam of coal -bed fractures with comprehensively longitudinal wave and transformed wave,there are directive significan ces for develop effectively seismic exploration with transform ed wave method.
This paper makes statistics and analysis of seismic velocity in seismic transformed wave in Junggar basin and Tarim basin,and comparison of these with compressional wave velocity features from Yangzi platform(Yun-nan province),Erdos platform(Ningxia-InnerMongolia)and Huabei platform(North China).
Choosing appropriate processing flows for converted waves and paying attention to the key tache of processing, a high quality 2D converted wave section was obtained.
By identifying the character of the seismic wave correctly, making use of the full wave logging, producing synthetic converted wave seismogram, and identifying horizon, we can carry out structure interpretation and reserve evaluation of the oilfield.
We have developed new basic theories for calculating the conversion point and the travel time of the P-SV converted wave (C-wave) in anisotropic, inhomogeneous media.
The deep structure of the central Koryak Highland deduced from the results of seismic surveying with the earthquake converted-wave method has corroborated the geotectonic interpretation.
In transversely isotropic media with a vertical symmetry axis (VTI), the converted-wave (C-wave) moveout over intermediate-to-far offsets is determined by four parameters.
The solution of wave equations for heterogeneous media expressed in the form of Neumann series for converted waves was used to find the reflectivity function.
Choosing appropriate processing flows for converted waves and paying attention to the key tache of processing, a high quality 2D converted wave section was obtained.