基于沉积数值模拟的辫状河心滩演化  

Analysis of braided bar evolution based on numerical simulation of deposition process

作　　者：张宪国[1,2] 张育衡 张涛 林承焰 王宏伟[5] ZHANG Xianguo;ZHANG Yuheng;ZHANG Tao;LIN Chengyan;WANG Hongwei(Key Laboratory of Deep Oil and Gas in China University of Petroleum(East China),Qingdao 266580,China;Shandong Provincial Key Laboratory of Reservoir Geology,Qingdao 266580,China;Research Institute of Petroleum Exploration and Development,He nan Oilfield,SINOPEC,Nanyang 473132,China;College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China;The 6th Oil Production Plant of Dagang Oilfield,PetroChina,Cangzhou 061100,China)

机构地区：[1]中国石油大学(华东)深层油气重点实验室,山东青岛266580 [2]山东省油藏地质重点实验室,山东青岛266580 [3]中国石化河南油田勘探开发研究院,河南南阳473132 [4]山东科技大学地球科学与工程学院,山东青岛266590 [5]中国石油大港油田采油六厂,河北沧州061100

出　　处：《中国石油大学学报（自然科学版）》2020年第2期1-9,共9页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(41672129,41602135);中央高校基本科研业务费专项(19CX02001A)。

摘　　要：选取黄骅坳陷新近系典型辫状河沉积解剖区,利用密井网区动静态资料相结合识别和刻画心滩及其内部结构,在此基础上通过沉积数值模拟探究研究区心滩形成过程,并建立研究区心滩顺流迁移和横向迁移演化模式。结果表明:顺流加积、垂向加积、侧向加积和侵蚀作用共同塑造心滩的形态和内部结构;滩头侵蚀、滩尾顺流加积和垂向加积形成了心滩的顺流生长和垂向生长;侧向加积与侵蚀作用控制心滩的不对称侧向生长过程。A detailed case study is chosen in Huanghua Depression where deposited classic braided rivers in the Neogene.Braided bars and their architecture are characterized by integrated analysis of dynamic and static data in the dense well area.Furthermore,the formation of braided bars is explored by numerical simulation of deposition process,and the downstream migration and lateral migration evolution model of single braided bar are discussed and built.It is concluded that downstream accretion,vertical accretion,lateral accretion and erosion shape the geometry and architecture of braided bars.Downstream and vertical growth of braided bars is controlled by bar head erosion,bar tail accretion and vertical accretion;lateral accretion and erosion control the lateral asymmetrical growth of braided bars.

关 键 词：心滩 储层构型 沉积数值模拟 不对称加积 演化模式 

分 类 号：P618.13[天文地球—矿床学]