sconstruct

国外免费地震资料处理软件包

from rsfproj import *
import velcon

Flow('sig',None,
     '''
     sigmoid n1=200 d2=0.008 n2=200 | put n3=1 d3=0.008 o3=0 |
     smooth rect1=3 diff1=1 | pad beg1=25 | put o1=0 |
     smooth rect1=3 | halfint inv=1 |
     preconstkirch zero=y inv=y h0=0 dh=0.008 nh=61 vel=1.5 | transp plane=23
     ''')

velcon.velcon('sig',
              nv=100,     # continuation steps
              v0=2,       # initial velocity
              dv=-0.01,   # velocity step
              nx=200,     # lateral dimension
              padt=1024,  # time padding
              padt2=2048, # extra time padding
              padx=521,   # lateral padding
              v1=1.5,     # other velocity
              rect1=100,  # vertical smoothing
              rect2=10)  # lateral  smoothing

Plot('vel','sig-vlf2',
     '''
     window min3=1 n3=1 | contour nc=50 title="Velocity Continuation"
     ''')

Flow('mva','sig-cip',
     'vscan v0=2 dv=-0.01 nv=100 half=y semblance=y v1=2')

Plot('mva',
     '''
     window min3=1 n3=1 |
     contour nc=50 title="Conventional Velocity Analysis"
     ''')

Result('sig-mva1','vel mva','SideBySideAniso')

Flow('pick','mva','pick rect1=100 rect2=10 | transp plane=23')
Flow('conv','sig-cip pick',
     '''
     vscan v0=2 dv=-0.01 nv=100 half=y v1=2 |
     slice pick=${SOURCES[1]} | transp plane=23
     ''')
Plot('conv','grey title="Conventional Velocity Analysis" ')
Plot('velc','sig-fmg','grey title="Velocity Continuation" ')

Result('sig-all','sig-migr1 sig-migr velc conv','TwoRows')

End()