Calcite precipitation in fractured basalt: Dual-fracture core (high flow rate)

This dataset provides X-ray computed tomography (CT) images of a dual-fractured (DF) basalt core acquired during the injection of a solution supersaturated with respect to calcite. The overall study employed core-flooding tests using single-fractured (SF) and dual-fractured (DF) basalt cores under four flow conditions: 1 mL/min (SF_LF), 2 mL/min (DF_LF), 5 mL/min (SF_HF), and 10 mL/min (DF_HF). These experiments were conducted to investigate the effects of flow rate and fracture configuration on porosity evolution, fracture–matrix interactions, and mineral precipitation patterns. The present image set contains the baseline scan and post-precipitation scans acquired at different injection times during the DF_HF experiment conducted at 10 mL/min. The DF_HF images have an in-plane voxel size of 48.7 microns and a slice spacing of 41.1 microns.本数据集包含方解石过饱和溶液注入过程中采集的双裂隙（DF）玄武岩岩心的X射线计算机断层扫描（CT）图像。本整体研究采用单裂隙（SF）与双裂隙（DF）玄武岩岩心开展岩心驱替实验，设置四种流态条件：1 mL/min（SF_LF）、2 mL/min（DF_LF）、5 mL/min（SF_HF）以及10 mL/min（DF_HF）。开展上述实验旨在探究流速与裂隙构型对孔隙度演化、裂隙-基质相互作用以及矿物沉淀模式的影响。本图像集包含在10 mL/min流速下开展的DF_HF实验中，于不同注入时刻采集的基线扫描图像与沉淀后扫描图像。DF_HF图像的面体素尺寸为48.7微米，层间距为41.1微米。