271 Geologic Energy Resources and Storage for Now and the Future (Posters)
This session seeks contributions describing research on multi-resource development efforts, non-traditional uses of fossil fuels, natural hydrogen and helium, CCUS, enhanced geothermal energy, storage of hydrogen and compressed air, and enhanced methane recovery and carbon storage in coal.
Wednesday, 22 October 2025
8:00 AM - 5:30 PM
HBGCC, Hall 1
Multiscale Characterization of Deformation Bands in Triassic fault zone: Implications for Fault Architecture and Hydrocarbon Migration, Lunnan Uplift, Tarim Basin
Paper number: 271-4
Program: Technical Sessions
Time: 8:00 AM – 8:00 AM
Authors
Abstract
关键词： 变形带、断层力学、油气运移、三叠系砂岩、伦南隆起、塔里木盆地
介绍
伦南隆起是塔北隆起中部（塔里木盆地）以东的次级构造单元，以三叠纪演替为主要的中生代油气储层。本研究采用多尺度（区域尺度到微观尺度）的方法表征了三叠纪地层的断层结构，并评价了其对油气运移/成藏的控制。
方法
综合分析包括：
故障相关结构的核心描述
微观结构表征（薄片SEM）
流体包涵体测温仪
运动学分析和*q-p*图量化
结果
故障区架构：
变形带构成了高孔隙度三叠纪砂岩的主要构造。
单个表带厚度：<1 毫米;簇状带达到 ≤2.5 厘米。
脆性颗粒（石英、长石）表现出强烈的破碎;塑性相（例如黑云母）在压缩应力下挤出到孔隙中。
石英碎裂会产生大裂缝，随后石英填充的微裂缝愈合。
变形控制：
变形机制受环境温压条件和母岩特性的影响。
流体包裹体数据、运动学和*q-p*分析证实了印-燕山走滑断裂期间形成的所有变形带。
结论
我们通过将岩心尺度观测与微观结构诊断相结合，建立了三叠纪储层变形带发展的概念模型。这些低位移结构对地体流动产生了关键影响，对塔里木盆地的油气运移路径和圈闭完整性产生影响。
Geological Society of America Abstracts with Programs. Vol. 57, No. 6
doi: 10.1130/abs/2025AM-414385
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