This invention relates to a method for improving the seismic resolution in the field of
petroleum exploration and development. The major problems with regard to the present low vertical seismic resolution, and the
thin layer, which is recognized by the seismic data administered with difficult, may be resolved according to the present invention. This method essentially comprises the following steps of: (a) ensuring the depth and the velocity of the low-velocity layer and the high-velocity layer and the characteristic of the
frequency spectrum of the
seismic wave at the near-surface using the borehole-micro-
logging method; (b) separating the virtual reflected wave from the seismic
record in the high-velocity layer using the
processing method of the vertical seismic section, and improving the SNR of the seismic
record of the
direct path wave at the high-velocity layer using the stack
processing method of porches of the vertical seismic section; (c) evaluating the de-
convolution operator of the near-surface by the
convolution math-
physics type equation; (d) evaluating the seismic
record with
high resolution by the de-
convolution math-
physics type equation; (e) providing the band-pass filtering and geologic interpretation to the seismic record with
high resolution. Using the method of the present invention, the apparent
dominant frequency may be reached to 200 Hz and higher, the vertical seismic resolution is improved, and the problem that it is difficult to recognize the
thin layer by the present
seismic exploration is resolved.