【摘要】 利用塔中地区HI井区主要取芯井的粒度资料,分析了该区含砾砂岩段粒度参数、频率分布曲线、C-M图以及概率累积曲线的特征,并结合测井相、地震属性探讨了该区主要发育河口湾沉积体系,认为其亚相由潮坪、潮汐砂坝、潮控河道组成,并且归纳出各亚相中不同微相所对应的概率累积曲线形态特征。更多还原

【Abstract】 Based on grain-size data of major cored wells in HI gasfield, central Tarim Basin, we analyzed some data from the pebbly sandstone, including: the grain-size data, the frequency distribution curve, the C-M figure and the characteristics of probability cumulative curve. Combined with electrofacies and seismic attribution, the depositional system developed in the estuary was discussed. Its subfacies are composed of tidal flat, tidal sandbar and flvuial channel. Finally, the morphologic characteristic of probability cumulative curve which is corresponding to different microfacies in subfacies was summed up.更多还原