摘要
水槽沉积模拟实验为研究砂体的形成、分布及演变规律提供了一种直观有效的手段。通常对模拟结果进行二维切片,通过若干二维切片研究砂体在三维空间的展布。为了直接在三维空间研究砂体的分布规律,在双物源条件下水槽沉积模拟结果二维切片的基础上,提出了一种砂体三维重构的方法。具体做法是:首先以高精度的方式对水槽模拟砂体进行解剖,利用商业化建模软件对获取的二维剖面图像进行坐标配准;然后对识别出的砂体进行数字化;利用数字化的结果作为条件数据,采用建模算法进行砂体的三维重构。结果表明,三维重构后的模型更好地再现了不同物源方向砂体在三维空间的形态和分布特点,为地下储层砂体分布的预测提供了参考。
Flume experiment is an intuitive and effective method for studying the formation,distribution and evolution of sandbodies.Usually the simulated sandbodies are cut into blocks for description of internal structures and their spatial distribution.In order to study the distribution patterns of sandbodies directly in a 3 D manner,this paper proposed a 3 D sandbody reconstruction method based on two-dimensional slices of the sandbodies formed in the flume experiment under two provenances.The method consists of the following steps.First,precisely dissect the simulated sandbody,and make coordinate registration for the acquired two-dimensional cross-sectional images using commercial modeling software,then digitize the identified sandbody.Using the digital results as the conditional data,modeling algorithms are performed for three-dimensional reconstruction of sandbodies.The result shows that after such a reconstruction,sandbodies may have better geometric shape and distribution characteristics from different sources in a 3 D space,and have a better reference for prediction of sandbody distribution pattern in underground reservoirs.
作者
史敬华
李少华
李紫琪
段冬平
陆嫣
黄鑫
SHI Jinghua;LI Shaohua;LI Ziqi;DUAN Dongping;LU Yan;HUANG Xin(College of Geosciences,Yangtze University,Wuhan 430100,China;Shanghai Branch of CNOOC Ltd.,Shanghai 200335,China)
出处
《海洋地质前沿》
CSCD
2020年第2期65-69,共5页
Marine Geology Frontiers
基金
国家科技重大专项(2016ZX05027-004)
国家自然科学基金(41872129)
湖北省自然科学基金创新群体项目(2016CFA024).
关键词
三维重构
水槽模拟
双物源
砂体
3D reconstruction
flume sedimentary experiment
two provenances
sandbody
作者简介
史敬华(1979—),女,在读博士,主要从事储层建模方面的研究工作。E-mail:1153414972@qq.com;通讯作者:李少华(1972—),男,教授,博士生导师,主要从事地质统计学、地质建模方面的研究工作。E-mail:jpishli@sina.com
