陆相湖盆“源-汇”系统要素定量关系——以渤海湾盆地庙西北地区为例  

Quantitative Relationships Among Source-to-sink System Parameters in a Lacustrine Basin-Taking Miaoxibei Area in Bohai Bay Basin,China as an Example

作　　者：冯斌 李华[1] 何幼斌[1] 李涛[1] 杜晓峰 黄晓波 周晓光 何瑞武[4] FENG Bin;LI Hua;HE You-bin;LI Tao;DU Xiao-feng;HUANG Xiao-bo;ZHOU Xiao-guang;HE Rui-wu(School of Geosciences,Yangtze University,Wuhan 430100,Hubei,China;China National Offshore Oil Corporation,Beijing 100028,China;Tianjin Branch of CNOOC(China)Ltd.,Tianjin 300452,China;Linpan Oil Production Plant,Shengli Oilfield Company,SINOPEC,Dezhou 251507,Shandong,China)

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]中海油研究总院有限公司,北京100028 [3]中海石油(中国)有限公司天津分公司,天津300452 [4]中国石化胜利油田分公司临盘采油厂,山东德州251507

出　　处：《地球科学与环境学报》2023年第3期680-695,共16页Journal of Earth Sciences and Environment

基　　金：国家自然科学基金项目(42272113,42272115)。

摘　　要：针对古代陆相湖盆“源-汇”系统定量刻画难度大和拟合模式不统一等问题,以渤海湾盆地庙西北地区古近系沙二段为研究对象,以钻井、薄片、壁芯以及三维地震资料为基础,以层序地层学、沉积学、地貌学和“源-汇”系统的基本理论和研究思路为指导,定量了刻画“源-汇”系统要素,分析了要素间的定量联系。结果表明:渤海湾盆地庙西北地区沙二段搬运通道发育规模与物源高度成正相关关系,物源高度越高,搬运通道规模越大;三角洲发育规模与物源体积成正相关关系,物源体积越大,三角洲发育规模越大;过大或过小的搬运通道宽深比均不利于三角洲的大规模发育。在定量关系研究的基础上,建立了“源-汇”系统要素“JASG”模式,为古代陆相湖盆“源-汇”系统研究提供了定量表征实例。In view of the difficulties in quantitative characterization of source-to-sink system of the ancient lacustrine basins and the non-uniform fitting model,the second member of Paleogene Shahejie Formation in Miaoxibei area of Bohai Bay Basin was taken as the research object,and the quantitative characterization of source-to-sink system parameters and the quantitative relationship among the parameters were analyzed based on the drilling,thin section,wall core and three-dimensional seismic data,and guided by the basic theories and research ideas of sequence stratigraphy,sedimentology,geomorphology and source-to-sink system.The results show that the development scale of transport channel in the second member of Shahejie Formation in Miaoxibei area of Bohai Bay Basin is positively correlated with the altitude of source;the higher the altitude of source,the larger the scale of channel;the development scale of delta is positively correlated with the source volume;the larger the source volume,the larger the development scale of delta;a too-large or too-small width-to-depth ratio of transport channel is not conducive to large-scale development of delta.Based on the quantitative relationship,the“JASG”model of source-to-sink system parameter is established,and provide a quantitative characterization example for the study of source-to-sink system of the ancient lacustrine basins.

关 键 词：“源-汇”系统 沉积学 拟合模式 物源体积 定量关系 古近系 沙河街组 渤海湾盆地 

分 类 号：P618.13[天文地球—矿床学] TE122[天文地球—地质学]