【摘要】 在大量测井、钻井、地震、分析化验等资料综合分析的基础上,对红车地区三叠系克拉玛依组展开高分辨率层序地层划分与对比,探求更小级别旋回内沉积相构成与演化特征,进而了解储层分布演化规律,为岩性圈闭的预测与评价奠定基础。结果表明:红车地区克拉玛依组发育2个长期基准面旋回、8个中期旋回和24个短期基准面旋回;基准面上升初期,以河道砂体广泛分布为主要特征,砂岩含量相对较高,岩性圈闭形成条件相对不利;随着基准面上升,可容纳空的增大,泥质的泛滥平原沉积物占据其主要空间,故在基准面上升时期,更有利于岩性圈闭的形成;而伴随着基准面下降,河流能量不断增强,河道发育规模随之加大;MSC2中期基准面旋回,发育于长期旋回的中部,此时基准面位置相对较高,处于上升中-晚期,河道砂体欠发育,泛滥平原广泛分布,易形成岩性圈闭。更多还原

【Abstract】 Based on cores,log and well-log data,evolution of all levels base-level cycles and high-resolution sequence stratigraphic model were analyzed in Hong Che area of Karamay formation.The results show that two longterm,eight middle-term and twenty four short-term basal-level cycles were classified.Early stage of basal-level ascend,it’s principal feature was wide range of channel sand,conten of sandstone relatively high,formation conditions of lithologic trap were relatively disadvantage,along with basal-level ascend,accommodation broaden,Muddy sediments of the flood plain to occupy the main space,therefore,in the ascend stage of the basal-level,it’s more favor of build-up lithologic trap.Accompany with descent of basal-level,stream energy continuously intensify,channel scale became widen.Msc2 middle-term basal-level cycle,developed in the middle of long-term cycle,basal-level relatively high,in the ascended stage,lacking of channel sand,wide range of flood plain,easily developed lithologic trap.更多还原