基于物理模拟实验研究地层组成对断层结构的影响  

A research on the impact of stratigraphic composition on fault structure based on physical simulation experiment

作　　者：单亦先[1] 劳海港[2] 

机构地区：[1]中国石油大学(华东)信息与控制工程学院,山东青岛266580 [2]河北联合大学矿业工程学院,河北唐山063009

出　　处：《油气地质与采收率》2015年第2期24-27,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"渤海湾盆地精细勘探关键技术"(2011ZX05006-003)

摘　　要：地层组成对断层结构具有重要的影响或制约作用,基于物理模拟实验研究了不同砂岩含量地层的断层结构特征.结果表明,纯砂岩即泥岩含量为0时,断层结构为二元型;泥岩含量为4%～16%时,断层发育一元型结构;泥岩含量为16%～20%时,断层发育二元型结构;泥岩含量为20%～35%时,断层发育二元或三元型结构,二元或三元型结构的界线并不很明显;泥岩含量为35%～50%时,断层又发育二元型结构;泥岩含量为50%～100%时,断层回归于一元型结构.泥岩含量与破碎带的宽度、诱导裂缝个数具有明显的正相关关系,基本上呈近似正态分布.Stratigraphic composition has an important influence or restrict on fault structure. Fault structure characteristicswith different sandstone contents of strata have been researched based on physical simulation experiments. The experi-ments show that the fault is a binary type when the sandstone content is 100%;the fault develops into a unary type whilethe shale content is 4%-16% and a binary type while the shale content is 16%-20%;and it develops into binary or ternarytype with unclear boundaries while the shale content is 20%-35%;the fault is binary type again when the shale content is35%-50% and becomes unary type when shale content is 50%-100%. There is an apparent positive correlation among theshale content,the width of damage zone and the number of induced joints,which is an approximately normal distribution.

关 键 词：物理模拟 地层组成 泥岩含量 破碎带宽度 诱导裂缝 断层结构 

分 类 号：TE111.2[石油与天然气工程—油气勘探]