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A platform for research: civil engineering, architecture and urbanism
Effect of $ CO_{2} $ Phase on Pore Geometry of Saline Reservoir Rock
https://orcid.org/0000-0002-1135-8126
https://orcid.org/0000-0002-4811-5443
Abstract The phase of $ CO_{2} $ present in a saline reservoir influences the change of the pore geometry properties of reservoir rocks and consequently the transport and storage integrity of the reservoir. In this study, digital rock physics was used to evaluate pore geometry properties of rocks saturated with the different $ phaseCO_{2} $-brine under reservoir conditions. The changes in the pore geometry properties due to the different $ phaseCO_{2} $-brine-rock interaction were quantified. In addition to compression, $ CO_{2} $-brine-rock interaction caused a further reduction in porosity by precipitation. Compared to the dry sample, the porosity of the gaseous $ CO_{2} $-br sample was reduced the most, and was lower by 15% after saturation and compression. There was reduction in the pre-compression porosity after compression for all the samples, however, the reduction was highest in the gaseous $ CO_{2} $-br-saturated sample (13%). The flatness of pore surfaces was reduced, and pores became less rounded after compression, especially in supercritical $ CO_{2} $-br-saturated rock. The results from this research provide a valuable input to guide a robust simulation of $ CO_{2} $ storage in reservoir rocks where different phases of $ CO_{2} $ could be present.
Highlights Effect of phase of $ CO_{2} $ on changes in pore geometry of saline reservoir is evaluated.$ scCO_{2} $-br caused the highest change in pore flatness and shape.$ gCO_{2} $-br caused the greatest change in pore volume.Phase of $ CO_{2} $ is important in $ CO_{2} $-brine-rock relationship.
Effect of $ CO_{2} $ Phase on Pore Geometry of Saline Reservoir Rock
https://orcid.org/0000-0002-1135-8126
https://orcid.org/0000-0002-4811-5443
Abstract The phase of $ CO_{2} $ present in a saline reservoir influences the change of the pore geometry properties of reservoir rocks and consequently the transport and storage integrity of the reservoir. In this study, digital rock physics was used to evaluate pore geometry properties of rocks saturated with the different $ phaseCO_{2} $-brine under reservoir conditions. The changes in the pore geometry properties due to the different $ phaseCO_{2} $-brine-rock interaction were quantified. In addition to compression, $ CO_{2} $-brine-rock interaction caused a further reduction in porosity by precipitation. Compared to the dry sample, the porosity of the gaseous $ CO_{2} $-br sample was reduced the most, and was lower by 15% after saturation and compression. There was reduction in the pre-compression porosity after compression for all the samples, however, the reduction was highest in the gaseous $ CO_{2} $-br-saturated sample (13%). The flatness of pore surfaces was reduced, and pores became less rounded after compression, especially in supercritical $ CO_{2} $-br-saturated rock. The results from this research provide a valuable input to guide a robust simulation of $ CO_{2} $ storage in reservoir rocks where different phases of $ CO_{2} $ could be present.
Highlights Effect of phase of $ CO_{2} $ on changes in pore geometry of saline reservoir is evaluated.$ scCO_{2} $-br caused the highest change in pore flatness and shape.$ gCO_{2} $-br caused the greatest change in pore volume.Phase of $ CO_{2} $ is important in $ CO_{2} $-brine-rock relationship.
Effect of $ CO_{2} $ Phase on Pore Geometry of Saline Reservoir Rock
https://orcid.org/0000-0002-1135-8126
https://orcid.org/0000-0002-4811-5443
Abstract The phase of $ CO_{2} $ present in a saline reservoir influences the change of the pore geometry properties of reservoir rocks and consequently the transport and storage integrity of the reservoir. In this study, digital rock physics was used to evaluate pore geometry properties of rocks saturated with the different $ phaseCO_{2} $-brine under reservoir conditions. The changes in the pore geometry properties due to the different $ phaseCO_{2} $-brine-rock interaction were quantified. In addition to compression, $ CO_{2} $-brine-rock interaction caused a further reduction in porosity by precipitation. Compared to the dry sample, the porosity of the gaseous $ CO_{2} $-br sample was reduced the most, and was lower by 15% after saturation and compression. There was reduction in the pre-compression porosity after compression for all the samples, however, the reduction was highest in the gaseous $ CO_{2} $-br-saturated sample (13%). The flatness of pore surfaces was reduced, and pores became less rounded after compression, especially in supercritical $ CO_{2} $-br-saturated rock. The results from this research provide a valuable input to guide a robust simulation of $ CO_{2} $ storage in reservoir rocks where different phases of $ CO_{2} $ could be present.
Highlights Effect of phase of $ CO_{2} $ on changes in pore geometry of saline reservoir is evaluated.$ scCO_{2} $-br caused the highest change in pore flatness and shape.$ gCO_{2} $-br caused the greatest change in pore volume.Phase of $ CO_{2} $ is important in $ CO_{2} $-brine-rock relationship.
Effect of $ CO_{2} $ Phase on Pore Geometry of Saline Reservoir Rock
Peter, Ameh (author) / Jin, Xiaoqiang (author) / Fan, Xianfeng (author) / Eshiet, Kenneth Imo-Imo (author) / Sheng, Yong (author) / Yang, Dongmin (author)
2022
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
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