Patent Document ID: 20050286344
Application ID: 11156787
Patent Flag: 0

Claim One:
1. A method for improving the seismic resolution, characterized in comprising the steps of: a) obtaining the vertical seismic record x i (t) at the near-surface of the ground by using the borehole-micro-logging method, ensuring the depth and the velocity of the low-velocity layer and the high-velocity layer and characteristic of the frequency spectrum of the seismic wave at the near-surface the ground, wherein x 0 (t) is the curve of the vertical seismic record at the near-surface of the ground when i=0, and indicates the seismic record of the physical characteristics of the ground surface; and x n (t) is the curve of the vertical seismic record at the near-surface of the ground when i=n, n is a certain depth, and indicates the seismic record of the physical characteristics of the high-velocity layer at a certain base level depth below the low-velocity layer; b) separating the virtual reflected wave of x i (t) from the high-velocity layer by using a method of the vertical seismic section, improving the signal-to-noise ratio(SNR) of the seismic record of the direct path wave x n (t) at the high-velocity layer by using a stack method of porches of the vertical seismic section, and providing the static correction to the x 0 (t) seismic record; c) establishing a convolution math-physics type equation, which is used when the seismic wave of the micro-logging spreads at the near-surface, i.e. x 0 (t)=x n (t)* s(t), or X 0 (f)=X n (f) S(f), evaluating the de-convolution operator of the near-surface: s −1 (t)=x n (t)* x 0 −1 (t), or S −1 (f)=X n (f)* X 0 −1 (f), wherein X 0 (f) is the Fourier transform of x 0 (t), X n (f) is the Fourier transform of x n (t), s(t) is the convolution operator of the near-surface, S(f) is the Fourier transform of s(t); d) establishing a de-convolution math-physics type equation of the seismic record around the ground of the micro-logging using the de-convolution operator of the near-surface and the seismic record of the ground, evaluating the high resolution of the seismic record, i.e. w(t)=g(t)* s −1 (t), or W(f)=G(f) S −1 (f), wherein g(t) is the seismic record of the ground, G(f) is the Fourier transform of g(t), w(t) is the result, which is compensated when the seismic wave of the de-convolution of the near-surface attenuated, and W(f) is the Fourier transform of w(t); e) providing the band-pass filtering and geologic interpretation to the seismic record with high resolution evaluated.