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The attached dataset consists of eighteen water flooding experiments using microfluidics and captured via a digital camera. The recovered oil is either water wet (mineral oil - colored red) or oil wet (crude oil - beige colored) at three capillary numbers (denoted low, medium, and high). The frame numbers are used as labels for each image. For example, DSC_430 to DSC_435, describes a sequence of 5 frame intervals. The time difference between each frame interval is described in the paper. Our findings confirm that improvements in oil/NAPL recovery are not universal due to the presence of microfractures but rather a function of capillary number, wettability, and microfracture connectivity. Specifically, we identify two distinct conceptual models for viscous fingering propagation within each microfracture/fracture ensemble type. We find that, regardless of wettability, a capillary number threshold for a connected-microfractured system exists beyond which the effects of microfractures on oil recovery, fluid dendrite morphology, and oil ganglia number diminish considerably. However, substantial geometry-dependent differences in oil recovery are observed below the threshold capillary number. Below the threshold capillary number, a microfracture connecting two macrofractures decreases oil recovery and suppresses the coalescence of viscous fingering dendrites regardless of wettability. On the other hand, a dead-end microfracture connected to only one macrofracture gives rise to wettability-dependent effects with (1) minimal impact on oil recovery at water-wet conditions, and (2) both decreasing and increasing recovery effects at oil-wet conditions. Furthermore, dead-end microfractures overall do not considerably impact the divergence of viscous dendrites.
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1 to 10 of 18 Results
Apr 25, 2020
Yujing Du; Mehmani, Ayaz; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "mineral_medium_ca_deadend_M2", https://doi.org/10.18738/T8/E2ZPNB, Texas Data Repository Dataverse, V1
Fluid displaced: mineral oil Capillary number: medium Fracture status: unconnected
Apr 25, 2020
Ayaz Mehmani; Mehmani, Ayaz; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "mineral_medium_ca_connected_M3", https://doi.org/10.18738/T8/FPSIAI, Texas Data Repository Dataverse, V1
Fluid displaced: mineral oil Capillary number: medium Fracture status: connected, M3
Apr 25, 2020
Yujing Du; Mehmani, Ayaz; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "mineral_medium_ca_matrix_M1", https://doi.org/10.18738/T8/P9F3KC, Texas Data Repository Dataverse, V1
Fluid displaced: mineral oil Capillary number: medium Fracture status: none, M1
Apr 25, 2020
Yujing Du; Mehmani, Ayaz; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "mineral_low_ca_matrix_M1", https://doi.org/10.18738/T8/CCOAO2, Texas Data Repository Dataverse, V1
Fluid displaced: mineral oil Capillary number: low Fracture status: none, M1
Apr 25, 2020
Yujing Du; Ayaz Mehmani; Ke Xu; Matthew Balhoff; Carlos Torres-Verdin, 2020, "mineral_low_ca_deadend_M2", https://doi.org/10.18738/T8/RYR7WK, Texas Data Repository Dataverse, V1
Fluid displaced: mineral oil Capillary number: low Fracture status: unconnected, M2
Apr 25, 2020
Yujing Du; Ayaz Mehmani; Ke Xu; Matthew Balhoff; Carlos Torres-Verdin, 2020, "mineral_low_ca_connected_M3", https://doi.org/10.18738/T8/3FCFBX, Texas Data Repository Dataverse, V1
Fluid displaced: mineral oil Capillary number: low Fracture status: connected, M3
Apr 25, 2020
Yujing Du; Ayaz Mehmani; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "mineral_high_ca_matrix_M1", https://doi.org/10.18738/T8/UKPGTU, Texas Data Repository Dataverse, V1
Fluid displaced: mineral oil Capillary number: high Fracture status: none, M1
Apr 25, 2020
Yujing Du; Ayaz Mehmani; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "crude_low_ca_matrix_M1", https://doi.org/10.18738/T8/T1XCT5, Texas Data Repository Dataverse, V1
Fluid in place: crude oil Capillary number: low Fracture status: none, M1
Apr 25, 2020
Yujing Du; Ayaz Mehmani; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "crude_low_ca_deadend_M2", https://doi.org/10.18738/T8/6JSNPF, Texas Data Repository Dataverse, V1
Fluid in place: crude oil Capillary number: low Fracture status: disconnected
Apr 25, 2020
Yujing Du; Ayaz Mehmani; Ke Xu; Shaina Alysa Kelly; Matthew Balhoff; Carlos Torres-Verdin, 2020, "crude_low_ca_connected_M3", https://doi.org/10.18738/T8/UVEGHH, Texas Data Repository Dataverse, V1
Fluid in place: crude Capillary number: low Fracture status: connected, M3
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