CAJ | 학술논문

利用地震、测井以及钻录井资料，对溱潼凹陷俞跺-华庄地区开展了沉积微相研究。该区阜三段沉积微相主要有水下分流河道、分流间湾、河口砂坝、远砂坝、前缘席状砂、前三角洲泥等6种微相；表现为2个反旋回沉积特征，即Ⅳ油组到Ⅲ油组、Ⅱ油组到Ⅰ油组均为从水深到水浅的变化，为三角洲发育的2个进积过程；自下而上表现为前三角洲亚相（前三角洲泥）-三角洲前缘亚相（前缘席状砂、河口坝、分流间湾、水下分流河道），为2个自下而上由细变粗的反旋回特征。宏观上三角洲前缘亚相与前三角洲亚相相互叠置。由于受基准面升降及入湖河道摆动的影响，不同期次三角洲前缘进积砂体发育程度及分布范围不同，宏观上为多期砂体加积，微观上则是沉积相序的改变。明确了俞垛-华庄地区阜三段沉积微相的空间展布规律，对该区阜三段下一步的勘探开发具有指导意义。
이용지진、측정이급찬록정자료，대진동요함유타-화장지구개전료침적미상연구。해구부삼단침적미상주요유수하분류하도、분류간만、하구사패、원사패、전연석상사、전삼각주니등6충미상；표현위2개반선회침적특정，즉Ⅳ유조도Ⅲ유조、Ⅱ유조도Ⅰ유조균위종수심도수천적변화，위삼각주발육적2개진적과정；자하이상표현위전삼각주아상（전삼각주니）-삼각주전연아상（전연석상사、하구패、분류간만、수하분류하도），위2개자하이상유세변조적반선회특정。굉관상삼각주전연아상여전삼각주아상상호첩치。유우수기준면승강급입호하도파동적영향，불동기차삼각주전연진적사체발육정도급분포범위불동，굉관상위다기사체가적，미관상칙시침적상서적개변。명학료유타-화장지구부삼단침적미상적공간전포규률，대해구부삼단하일보적감탐개발구유지도의의。
The studies of sedimentary microfacies have been carried out in the Yuduo-Huazhuang area of the Qintong Sag based on seismic, drilling and logging analyses. 6 types of microfacies have been identified in the 3rd member of the Funing Formation in the study area, including underwater distributary channel, interdistribu-tary bay, channel mouth bar, distal bar, frontal sheet sand and prodelta mud. There are 2 reverse cycles, i. e. from oil group ⅣtoⅢand fromⅡtoⅠ, both evolving from deep water to shallow water, indicating for 2 pro-gradational processes of delta formation. From bottom to top, the prodelta mud microfacies (prodelta mud) changes to delta front microfacies ( frontal sheet sand, channel mouth bar, interdistributary bay and underwater distributary channel) , indicating for 2 reverse cycles which become coarse upwards. The delta front microfacies interbeds with the prodelta microfacies. Influenced by base level changes and stream entering lake, the generation degree and distribution range of delta front progradational sandbody of different stages are various, i.e. multiple stages of sandbody aggradate from macro view, and sedimentary facies sequences change from micro view. The distribution rules of sedimentary microfacies of the 3rd member of the Funing Formation in the Yuduo-Huazhuang area have been identified, which have guiding significances for further explorations.