Forecasting and evaluating technologies of three-dimensional earthquake optimum time window river course sand body storage layer

Forecasting and evaluating technologies of three-dimensional earthquake optimum time window river course sand body storage layer

  • CN 101,408,624 B
  • Filed: 10/08/2007
  • Issued: 03/28/2012
  • Est. Priority Date: 10/08/2007
  • Status: Active Grant
First Claim
Patent Images

1. the visual prediction and evaluation method of window river channel sand reservoir during three-dimensional earthquake optimum is characterized in that may further comprise the steps:

  • 1) meticulous horizon calibration is confirmed the accurate position of purpose sand body in seismic section,2) the phased meticulous stratum contrast of well shake combination,3) with the basic trend of one group of lineups rather than with near lineups criteria for interpretation layer zone of interest,4) be that the basis is gone up or pushed away zone of interest down with the type formation, window when having the time window of demonstration to be the best along the definite target river course of layer scanning at interval with 1-2ms,The window scope cuts out a daughter along layer during

         5) according to the best from 3-D data volume,6) scanning is had an X-rayed in daughter to zone of interest,7) given zone of interest seed points, amplitude selected during according to perspective is interval, utilizes autotrace that the geologic body that perceives is followed the trail of, and forms a point set that satisfies condition,8) sand body that perceives is done visual inspection,9) extract the end face and the bottom surface of the sand body point set track out respectively, they correspond respectively to the end face and the bottom surface of sand body,10) sand body end face and sand body bottom surface are subtracted each other, obtain the time thickness map of sand body, be scaled the sand body thickness map with interval velocity,11) with the control of well point infiltration sandstone thickness, golden interpolation technique converts the infiltration sand-thickness map in the gram with floating outward,12) sand body is pushed up, is converted to deeply when carry out the bottom surface sand body top, sole structure figure,13) adopt the frequency division inversion technique to confirm shale index, the factor of porosity parameter of sand body by well logging reconstruct constraint.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×