Data underlying the research on Pore scale Fluid Migration under two Phase flow in oil- and brine-wetted sandstone

The primary objective of the study was to visualize the efficiency of n-decane (non-wetting phase) displacement in porous sandstones during brine injection. The experiments conducted serve as an analogue to understand the fluid dynamics during enhanced oil recovery from porous reservoirs. Bentheimer sandstone was used as a representative porous sandstone reservoir for these experiments. The steady state displacement of decane after injecting brine at sequentially increasing flow-rates were imaged using the EMCT. To understand the effect of salinity on the displacement efficiency, we also used brines of two different salinity. A dry and decane saturated scan were acquired in each case as reference. Decane was doped with 20% iododecane to increase the contrast between brine and decane. Four different flow-rates of brine were selected for the experiments to displace n-decane out of the pore spaces: 0.001 ml/min, 0.01 ml/min, 0.1 ml/min and 1 ml/min. The zip file content, explainations and data structure can be found in the README file:

本研究的核心目标为可视化盐水注入过程中，正癸烷(n-decane，非润湿相(non-wetting phase))在多孔砂岩内的驱替效率。本次实验可作为类比参照，用于理解多孔油藏强化原油采收率过程中的流体动力学特性。实验选用本特海姆砂岩(Bentheimer sandstone)作为典型多孔砂岩油藏样本。通过电磁计算机断层扫描(EMCT)对以逐级递增流速注入盐水后正癸烷的稳态驱替过程进行成像。为探究矿化度对驱替效率的影响，本次实验还采用了两种不同矿化度的盐水。每组实验均采集干样与正癸烷饱和样的扫描数据作为参考。为提升盐水与正癸烷间的成像对比度，向正癸烷中掺入了20%的碘代癸烷。本次实验共选取四种不同的盐水流速，以将孔隙空间内的正癸烷驱替出来，分别为0.001 ml/min、0.01 ml/min、0.1 ml/min及1 ml/min。压缩包内的文件说明、数据结构等详细信息可参阅README文件。