Patent ID: 7925442
Filing Date: 2011-04-12
Classification: G01V

Abstract:
1. A method of providing correlation between depositionally equivalent subsurface events between separate basins, the method comprising: (a) obtaining a set of seismic amplitude data representing a seismic volume of interest acquired in a deep water environment, wherein the dimensions of the set of seismic data are (i) a two-dimensional position on a surface plane of the seismic volume of interest, (ii) a parameter related to seismic time and (iii) a parameter related to the amplitude derived from the signal arriving at a point in the data set defined by (i) and (ii); (b) identifying a plurality of basins in the volume of seismic amplitude data, the plurality of basins including a first basin and a second basin; (c) obtaining values for an impedance parameter related to one or both of acoustic and/or elastic impedance for locations within the volume of seismic data; (d) identifying stratigraphic layers within the first basin; (e) identifying stratigraphic layers within the second basin; (f) introducing micro-layers in between and/or within the stratigraphic layers identified in (d) for the first basin and (e) for the second basin, (g) taking the mean of the impedance parameter within each micro layer; (h) obtaining a pseudo log for each of the first basin and the second basin including the mean values obtained at (g); (i) correlating the pseudo log for the first basin with the pseudo log for the second basin; and (j) adjusting an interpretation regarding the continuity of the layers between the first basin and the second basin based on the correlation performed at (i).