断裂成因他源高压及其地质特征 Allogenic Overpressuring Associated with Faulting and Geological

排行榜 收藏 打印 发给朋友 举报 来源: 《地质学报》 发布者:cjk3d
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断裂成因他源高压及其地质特征

Allogenic Overpressuring Associated with Faulting and Geological Consequences

开启断裂的活动造成其断开的渗透性地层之间的水动力连通,从而可在浅部地层产生极高超压.这种超压在形成机制、分布特征和识别标志等方面均与传统认识和讨论的类型大不相同.笔者等通过实例,分析了断裂成因他源高压的形成、分布及其对油气成藏的影响等.断裂连通系统中各渗透性地层内过剩压力完全一致,地层压力以静水压力梯度随深度增加;由构造应力或由地层压力为主导因素的断裂的形成对应着不同的压力形成机制、压力分布特征及演化过程;这类超压带之上的压力过渡带一般较薄,但受地层性质及超压形成后沉积速率的影响.这类高压的研究对于识别断裂活动、划分油气运聚单元、确定油气藏动力学过程、压力预测等均有重要意义.水利论文4~!@6f]Ak;t;P"k Hb

作 者: 罗晓容  
作者单位:中国科学院地质与地球物理研究所,矿产资源重点实验室,北京,100029 
刊 名:地质学报  ISTIC PKU
英文刊名:ACTA GEOLOGICA SINICA 
年,卷(期):2004 78(5) 
分类号: 
关键词:开启断裂   异常高压   超压机制   渗透性地层   成藏动力学  
机标关键词:断裂成因高压地层压力渗透性地层形成机制分布特征超压油气运聚单元静水压力梯度主导因素油气成藏演化过程压力预测识别标志力学过程开启断裂断裂活动过剩压力构造应力沉积速率 
基金项目:国家自然科学基金,中国石油天然气股份有限公司资助项目 
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