摘要
西柳10断块是冀中坳陷饶阳凹陷蠡县斜坡中勘探程度较高的区块之一。本次研究从岩心、录井、测井等资料入手,系统分析岩石学特征、沉积构造和测井曲线等沉积相标志,并结合区域沉积背景,对该断块沙三段沉积相类型及特征进行研究。研究结果表明:研究区沙三段属于辫状河三角洲相,主要发育辫状河三角洲平原亚相,包括心滩、滩间充填、河道边缘、河漫滩4种微相;沙三段各小层辫状河道均呈西北-东南向展布,分布广泛,心滩砂体发育且大多在空间上相互叠置,滩间充填砂体包围心滩充填在河道中,河漫滩呈不规则长条状分布于河道间;沙三下亚段心滩规模整体偏小,沙三上亚段中下部Es3I-4、Es3I-3两小层西部河道最宽,河道中滩体规模大且在空间上呈较好叠置关系,中上部Es3I-2、Es3I-1两小层东部河道最宽,发育最大规模滩体,各小层心滩叠加之处砂体最厚。
The Xiliu 10 fault block is one of the most explored region in the Lixian slope of the Raoyang sag, Jizhong depression. The sedimentary microfacies and the fine characterization of the sand body distribution of the third member Shahejie formation of the fault block are still the geological research work urgently needed in its exploration and development.With the help of the core, well logging, mud logging and so on, systematic analysis of sedimentary facies signs such as petrological features, sedimentary structures and logging curves,and the regional sedimentary background was to research the sedimentary facies types and characteristics of the third member Shahejie formation of the fault block.The study achievements show that the study area of the third member of Shahejie formation belongs to the braided river delta facies, which mainly develops the braided river delta plain, including four microfacieses,the central bar, channel fill, river edge, floodplain.Braided channel is widely distributed with NW-SE trending located in all the study area. The central bar developes well and mostly overlaps each other in space, and it is surrounded by the sand body of channel fill in the river, the floodplain is irregularly in long strips distributed between rivers. The scale of the central bar in the lower sub-section of the third member of Shahejie formation is generally small, the western channel of Es3 I-4 and Es3 I-3 layers in the middle and lower parts of the upper sub-section of the third member is the widest channel in all layers, and the central bar in the river is large in scale and has a good superposition relationship in space.The eastern channel of Es3 I-2 and Es3 I-1 layers in the middle and upper parts of the upper sub-section of the third member is the widest channel in all layers, which developed the largest scale central bars, and the thickest sand body in the place where the central bar overlaps in each layers.
作者
孙文钊
张廷山
张喜
王旭旭
席家辉
栾雪莹
SUN Wenzhao;ZHANG Tingshan;ZHANG Xi;WANG Xuxu;XI Jiahui;LUAN Xueying(School of Geoscience and Technology,Southwest Petroleum University,Chengdu Sichuan 610500,China;Oil Production Plant 12 of PetroChina Changqing Oilfield Company,Qingyang Gansu 745400,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu Sichuan 610500,China)
出处
《石油化工应用》
CAS
2019年第12期82-88,共7页
Petrochemical Industry Application
关键词
相标志
测井相
辫状河三角洲平原
心滩
砂体展布
facies sign
logging phase
braided river delta plain
central bar
sand body distribution
