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长石粒内孔流体充注规律及分形特征:以鄂尔多斯盆地延长组致密砂岩储层为例
Authors
关平
师永民
杜书恒
Publication date
1 January 2019
Publisher
Abstract
鄂尔多斯盆地延长组致密砂岩储层长石含量较高且脆性破裂发育广泛,目前对该类储层长石粒内孔流体充注规律及分形特征等了解仍然十分匮乏.综合铸体薄片、场发射扫描电镜、图像处理、分形维数计算等手段,提出"粒内充注"概念并对延长组储层长石粒内孔开展了微观充注过程定量模拟,指出长石粒内孔相对于粒间孔的特殊性.从时间上将粒内充注过程划分为前期非稳态充注和后期稳态充注两大阶段,转折点为充注关键时刻.依据充注速率值分布特点,将长石粒内孔某一时刻发生充注的所有空间位置划分为高速充注区、中速充注区、低速充注区三大充注区域,并建立了粒内充注波及系数幂函数变化曲线,厘清了流动轨迹分形维数的物理意义.研究成果可为鄂尔多斯盆地延长组储层油气成藏过程恢复提供较为重要的启示
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Institute Of Mechanics,Chinese Academy of Sciences
See this paper in CORE
Go to the repository landing page
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oai:dspace.imech.ac.cn:311007/...
Last time updated on 22/03/2020
Institute Of Mechanics,Chinese Academy of Sciences
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:dspace.imech.ac.cn:311007/...
Last time updated on 19/05/2020