实验模拟震积岩沉积特征及其与地震强度之间关系

Seismite is the unconsolidated sediment under water which reconstructed by earthquake and redeposited in the tectonic activity area.This can solve the question of the ancient basin, paleoclimate, ancient structure and the stratum comparison at the same tectonic belt,and so on.There is great significance in revealing the relationship between structural characteristics and seismic intensity and the ancient seismic evolution. Seismites can also become a kind of unconventional oil and gas reservoirs due to the earthquake action. Based on the experimental simulation,the degree of liquefaction deformation to different types of sand, clay under the condition of different levels of vibration can be identified. To test the mark of seismite recognition by combining with the Dongying sag and Lingshan island seismites core description , and to establish the relation between the degree of liquefaction deformation and strength of earthquake to the seismites.The study aims to establish the three-in-one identification and description technique of the seismites reservoir with " core analysis, seismic and log " through core description, analysis, physical property analysis, logging response simulation,and to reveal the function of reservoir and the influence factors to continental facies seismites.

震积岩是指构造活动区未固结的水下沉积物受地震活动改造再沉积的沉积层，对解决古盆地、古环境、古构造及同一构造带内地层对比等问题，揭示构造特征与地震强度间的关系以及古地震演化特征等具有重要意义；受地震改造作用，震积岩也可成为一种潜在的非常规油气储集体。本研究基于实验模拟方法研究不同级别振动条件下，不同类型砂、粘土的液化变形程度，结合东营凹陷、灵山岛震积岩岩心描述，验证震积岩识别标志，建立震积岩液化变形程度与地震强度之关系。通过岩心描述、分析化验、物性分析、测井响应模拟等手段初步建立"岩心分析-地震-测井"三位一体的震积岩储层识别与描述技术，研究陆相震积岩的储集性能及影响因素。