【摘要】 低幅度构造反映在地震资料上变化幅度较小,构造圈闭不易识别,尤其在构造成图方面需要慎重处理。而在利用地震解释软件进行构造成图时,网格参数选取的合理性常常被忽视。以渤海海域Q构造的新近系明化镇组下段浅水三角洲M砂体为例,通过对比不同参数的成图效果,分析了网格间距、搜索半径等网格参数的选取对构造成图精度的影响及等值线间隔不同所成构造图对后续储量计算工作的影响。通过将地震解释成果与其对应生成的网格成果在地震剖面上对比的方法,可以判断所选取的网格参数是否合理并对其进行修正,从而得到精度较高的构造图。更多还原

【Abstract】 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.更多还原