Impact of Grid Parameters Selection on Low Amplitude Structural Mapping
Yang Haifeng · Journal of Oil and Gas Technology · 2012
The low amplitude structural trap was not easily found in the seismic data.Especially it should carefully deal with the structural maps.A selection of grid parameters was usually ignored when structural maps were made by using seismic interpretation software.By taking some shallow water delta sand in Q Structure in Bohai Sea for example,the impacts of selected grid parameters on structural mapping were discussed by comparing effects of different parameters.The impacts of several parameters,such as grid space and grid coverage were quite important on the accuracy of structural mapping,and the impacts of the structural maps of different contour intervals were very important on the following calculation of reserves.The rationality of selected grid parameters can be judged by making a correlation between horizon interpretation results with their corresponding gird results on a seismic section,and then the grid parameters can be modified,therefore more accurate structural maps are obtained.