eprintid: 11662 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/16/62 datestamp: 2023-11-10 03:26:11 lastmod: 2023-11-10 03:26:11 status_changed: 2023-11-10 01:15:47 type: article metadata_visibility: show creators_name: ANDRIAMIHAJA, S. creators_name: PADMANABHAN, E. creators_name: BEN-AWUAH, J. creators_name: SOKKALINGAM, R. title: Static dissolution-induced 3D pore network modification and its impact on critical pore attributes of carbonate rocks ispublished: pub keywords: carbonate rock; dissolution; grainstone; mudstone; pore space; porosity; rock mechanics; size distribution; three-dimensional modeling; tomography; X-ray spectroscopy note: cited By 6 abstract: To determine the effect of dissolution on pore network development in carbonate rocks, dissolution experiments, X-Ray microtomography, and thin section analysis were conducted on argillaceous limestone and grain limestone samples at different temperatures and constant pH, HCl concentration. The relationship between Ca2+ concentration and time was revealed through the experiments; pore size distribution before and after dissolution indicate that there is no correlation between the temperature and pore size variation, but pore size variation in grain limestone is more significant, indicating that the variation is mainly controlled by the heterogeneity of the rock itself (initial porosity and permeability) and the abundance of unstable minerals (related to crystal shape, size and mineral type). At different temperatures, the two kinds of carbonate rocks had very small variation in pore throat radius from 0.003 mm to 0.040 mm, which is 1.3 to 3.5 times more, 1.7 on average of the original pore throat radius. Their pore throat length varied from 0.05 mm to 0.35 mm. The minor changes in the pore throat radius, length and connectivity brought big changes to permeability of up to 1 000�10�3 μm2. © 2019 Research Institute of Petroleum Exploration & Development, PetroChina date: 2019 publisher: Elsevier B.V. official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064531859&doi=10.1016%2fS1876-3804%2819%2960017-0&partnerID=40&md5=dc70a949a202dd0665cb8b061ce1098a id_number: 10.1016/S1876-3804(19)60017-0 full_text_status: none publication: Petroleum Exploration and Development volume: 46 number: 2 pagerange: 374-383 refereed: TRUE issn: 18763804 citation: ANDRIAMIHAJA, S. and PADMANABHAN, E. and BEN-AWUAH, J. and SOKKALINGAM, R. (2019) Static dissolution-induced 3D pore network modification and its impact on critical pore attributes of carbonate rocks. Petroleum Exploration and Development, 46 (2). pp. 374-383. ISSN 18763804