莫索湾地区侏罗系三工河组储集层沉积及成岩作用特征

主要根据5口评价井，莫101、莫102、莫103、莫104、莫105井及盆5、盆6井的取心资料、电测曲线、综合录井资料以及地震资料分析研究，得出研究区侏罗系三工河组J1s2^2；地层的岩石学特征，认为储层的岩石类型为细中粒岩屑砂岩及不等粒岩屑砂岩，细粒岩屑砂岩少量．沉积相为三角洲前缘亚相，并指出它们在纵向上的沉积序列特征及砂体展布特征．通过大量的分析化验数据分析了成岩作用类型，划分了其成岩序列及成岩阶段．指出压实作用、粘土矿物及敏感性及软碎屑等因素不同程度的影响了储集层。

SEDIMENTARY SYSTEM AND DIAGENESIS OF JURASSIC SANGONGHE FORMATION RESERVOIR IN MOSUOWAN AREA

On the basis of analysis and study on core data, logging curves, drilling and seismic data gathered from 5 evaluation wells( Well Mo-101, Well Mo-102, Well Mo-103, Well Mo-104, Well Mo-105) , well Pen-5 and Pen 6, we obtained the petrological features of of J1s 22. It is considered that reservoirs are medium-fine litharenite, unequigranular litharenite with little fine litharenite, the target zone consists of subaqueous channel,subaqueous natural levee,distributary mouth bar and front sand sheet with sedimentary facies of delta front, and then sedimentary sequence and distribution are described in this paper. Through a systematic diagenesis analysis of J1s 22. reservoir, diagenesis type, diagenesis sequence and their stage can be classified. The author points out that compaction, clay mineral, sensitivity and Soft Lithic Fragment are main factors influencing reservoir.