东营凹陷陡坡带构造演化物理模拟  

Physical modeling of structural evolution in steep slope zone of Dongying Sag

作　　者：王勇[1] 熊伟[1] 崔营滨[1] 

机构地区：[1]中国石化胜利油田分公司地质科学研究院,山东东营257015

出　　处：《断块油气田》2011年第4期449-452,共4页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项"复杂地质体精细地质建模"(2008ZX05006-001)部分成果

摘　　要：在东营凹陷北部陡坡带分段构造演化剖面详细恢复的基础上,结合控凹断层陈南断层分段活动的特点,分段讨论了东营凹陷陡坡带构造特征,建立了相应的静态地质模型。针对特定的地质模型,采用三维自动化构造物理模拟实验仪重复进行了多次实验,直至模拟结果与实际构造演化剖面相符。这既保证了构造演化的可塑性,同时也保证了实验结果的真实性。实验结果表明,边界形态、动力加载方式是影响构造特征的主要因素。由此推断东营凹陷内膏泥岩的不均匀拱升、区域的伸展和重力复合作用是导致凹陷陡坡带构造形成的基本动力。实验结果与典型构造演化剖面具有良好的对比性,能够较好地解释东营凹陷北部陡坡带复杂断裂体系的构造样式和演化的动力学成因机制。On the basis of the detailed recovery of the sectionalized structural evolution cut plane of northern steep slope zone in Dongying Sag,combined with the sectionalized active characteristics of Chennan fault,which is the subbasin-controlling fault,the structural characteristics of steep slope zone of Dongying Sag is discussed and relevant static geological model is established.Aiming at particular geological model,multiple experiments are repeatedly carried out by using the 3D automatical structural physical modeling experiment instrument until the model result is in agreement with the actual structural evolution cut plane.That ensures both plasticity of structural evolution and factuality of experimental result.The experimental result shows that the border conformation and dynamic loading are the main factors of affecting structural characteristics.We conclude that the unequal arching of mudstone,regional extension and complex gravity role are the basic driving force of structure formation of the steep slope zone.Experimental result and typical structural evolution cut plane show a good comparison,which can interpret the dynamics genesis of structural pattern and evolution of complex fracture system in northern steep slope zone of Dongying Sag.

关 键 词：构造演化剖面 地质模型 构造物理模拟 构造样式 东营凹陷陡坡带 

分 类 号：P618.130.2[天文地球—矿床学]