摘要
根据相似性原理,选择不同的相似材料模拟双侧挤压作用下含盐不均匀基底变形对盖层构造的影响。实验表明:①双侧挤压背景下,受硬泡沫和凡士林代表的不同性质的基底的影响,上覆细沙盖层中形成的构造样式不同;②尽管模型的基底结构左右两侧基本对称,但上覆盖层的变形样式并不完全对称;③变形后期,盐脊顶部上覆沙层出现明显的塌陷构造;④实验最终结果显示的整个背冲构造的形成是由两个分割开的次级构造逐步合并而成的。
According to the analogy theory,different materials are selected for physical modeling of im-pact of inhomogeneous salt-bearing basement deformation on caprock structures under bilateral compressions.The experiment shows that①structural styles in overburden fine-sand caprock are different under bilateral compression settings and impact of different characteristic basements made by rigid foam and Vaseline;②the overburden structural styles were asymmetric although the bilateral basement structures of the model are basi-cally symmetric;③collapse structures occurred in salt-apex overburden sand layers during late period of defor-mation;④the final experimental result indicates that the whole antiformal overburden structures are shaped by the combination of two separate substructures.
出处
《新疆石油地质》
CAS
CSCD
2002年第4期293-294,共2页
Xinjiang Petroleum Geology
基金
本项目得到中国石油集团公司石油科技中青年创新基金
国家"973"重大科技攻关项目"中国典型叠合盆地油气形成富集与分布预测"(G1999043305)
国家"九五"重点科技攻关项目"塔里木盆地石油天然气勘探(96-111)"联合资助。
