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5 results for “Residual trapping”
The role of injection method on residual trapping at the pore-scale in continuum-scale samples: segmented data
<p>The experiments in this work explore the role of a variable injection rate on gas saturation and residual trapping. There are 2 experiments in this work H2L (high to low injection rate) and L2H (low to high injection rate). The workflow for processing the micro-CT images to get the segmented images is described in [1]. </p><p>The following scans are included in this repository NB. all data for this repository is segmented micro-CT data.: </p><ol><li>Dry scan prior to experiment = merged_binning_2_38_1927</li><li>H2L during high flow = merged_segmented_flow_09_h2lh_merged</li><li>H2L during low flow = merged_segmented_flow_11_h2ll_2_merged</li><li>H2L at the end of drainage (no flow) =merged_segmented_flow_16_dra1_pd5_merged</li><li>H2L at the end of imbibition (no flow) =merged_segmented_flow_21_imb1_pi1_merged</li><li>L2H during low flow = merged_segmented_flow_29_2_l2hl_merged</li><li>L2H during high flow = merged_segmented_flow_30_l2hh_merged</li><li>L2H at the end of drainage (no flow) =merged_segmented_flow_31_dra2_pd1_merged</li><li>L2H at the end of imbibition (no flow) =merged_segmented_flow_33_imb2_pi1_merged</li></ol>
Data for: Residual trapping of H2
<p class="Abstract">Residual trapping is an important trapping mechanism that affects the efficiency of cyclic storage and withdrawal of hydrogen in geological media. In this study, we made the first attempt to conduct pore-scale modeling to investigate the effects of pore geometry and injection rate on the occurrence and percentage of residual trapping via two major mechanisms: bypassing and snap-off. We started our theoretical and numerical analyses from a single rectangular pore to understand the key controls in bypassing. We further investigated two factors on bypassing: (a) a continuous cycle of injection-extraction of H<sub>2</sub>, and (b) varied pore geometry. To understand snap-off as the other mechanism, we used a three-end single asymmetric pore. Based on our pore-scale simulations, we found that: (a) A higher pore height/width ratio (h/w) and a higher injection rate cause more residual trapping, which is unfavorable for withdrawing H<sub>2 </sub>if starting from 100% H<sub>2</sub>; (b) the trapping percentage increases with the h/w first in the imbibition-dominated regime and then decrease after h/w reaches 0.5 in the drainage-dominated regime; (c) A converging-shaped pore can result in less trapping volumes. Both our theoretical and numerical results show that snap-off occurs when the other forces outbalance the capillary force. Through a theoretical comparison between H<sub>2</sub> and CO<sub>2</sub> and a discussion of these trapping mechanisms for engineering applications, we concluded that the mechanisms that we found from this study are applicable for CO<sub>2</sub> residual trapping and can be useful for developing engineering controls of H<sub>2</sub> storage.</p>
Data for: Residual trapping of H2
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The role of injection method on residual trapping at the pore-scale in continuum-scale samples: raw micro-CT dataset
<p>The experiments in this work explore the role of a variable injection rate on gas saturation and residual trapping. There are 2 experiments in this work H2L (high to low injection rate) and L2H (low to high injection rate). The workflow for processing the micro-CT images to get the segmented images is described in [1]. </p><p>The following scans are included in this repository NB. all data for this repository is segmented micro-CT data.: </p><ol><li>Dry scan prior to experiment = <a href="https://zenodo.org/api/records/10145102/draft/files/05_dry_bin2_merged.tif/content">05_dry_bin2_merged.tif</a></li><li>Sample fully saturated with brine = <a href="https://zenodo.org/api/records/10145102/draft/files/07_wet_bin2_merged.tif/content">07_wet_bin2_merged.tif</a></li><li>H2L during high flow = <a href="https://zenodo.org/api/records/10145102/draft/files/09_h2lh_merged.tif/content">09_h2lh_merged.tif</a></li><li>H2L during low flow = <a href="https://zenodo.org/api/records/10145102/draft/files/11_h2ll_2_merged.tif/content">11_h2ll_2_merged.tif</a></li><li>H2L at the end of drainage (no flow) = <a href="https://zenodo.org/api/records/10145102/draft/files/16_dra1_pd5_merged.tif/content">16_dra1_pd5_merged.tif</a></li><li>H2L at the end of imbibition (no flow) = <a href="https://zenodo.org/api/records/10145102/draft/files/21_imb1_pi1_merged.tif/content">21_imb1_pi1_merged.tif</a></li><li>Sample fully resaturated with brine = <a href="https://zenodo.org/api/records/10145102/draft/files/28_wet2_bin2_merged.tif/content">28_wet2_bin2_merged.tif</a></li><li>L2H during low flow = <a href="https://zenodo.org/api/records/10145102/draft/files/29_2_l2hl_merged.tif/content">29_2_l2hl_merged.tif</a></li><li>L2H during high flow = <a href="https://zenodo.org/api/records/10145102/draft/files/30_l2hh_merged.tif/content">30_l2hh_merged.tif</a></li><li>L2H at the end of drainage (no flow) =<a href="https://zenodo.org/api/records/10145102/draft/files/31_dra2_pd1_merged.tif/content">31_dra2_pd1_merged.tif</a></li><li>L2H at the end of imbibition (no flow) =<a href="https://zenodo.org/api/records/10145102/draft/files/33_imb2_pi1_merged.tif/content">33_imb2_pi1_merged.tif</a></li></ol>
Targeting Residual Activity By Precision, Biomarker-Guided Combination Therapies of Multiple Sclerosis (TRAP-MS)
ClinicalTrials.gov study NCT03109288. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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