Show simple item record

AuthorMahmoud M.
AuthorHamza A.
AuthorHussein I.A.
AuthorEliebid M.
AuthorKamal M.S.
AuthorAbouelresh M.
AuthorShawabkeh R.
AuthorAl-Marri M.J.
Available date2022-04-25T10:59:46Z
Publication Date2020
Publication NameJournal of Petroleum Science and Engineering
ResourceScopus
Identifierhttp://dx.doi.org/10.1016/j.petrol.2020.106923
URIhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85077657686&doi=10.1016%2fj.petrol.2020.106923&partnerID=40&md5=f680032db7cebf27c566d2b8dba865fa
URIhttp://hdl.handle.net/10576/30408
AbstractRecently, CO2 sequestration in different shale formations has become an attractive option owing to the abundance of shale basins. However, these formations have different maturity levels and contain a variety of minerals such as carbonates and clays. The amount of CO2 in shale formations is related to the adsorption capacity of these rocks. In this work, adsorption of CH4 and CO2 on three different shales (mature and immature) is studied at different temperatures (50 °C–150 °C). Increasing the percentage of CO2 in the gas mixture raised the adsorption capacity. The different shale samples behave differently at different temperatures. Two of the investigated shale samples (low and moderate total organic carbon (TOC)) showed an endothermic response from 50 °C to 100 °C with a tremendous increase in the adsorption capacity followed by an exothermic response and significant reduction in the capacity at 150 °C. The third sample, which had the highest TOC, had no CH4 adsorption at 50 °C but showed an endothermic response at high temperature with a significant increase in CH4 adsorption. This temperature dependent adsorption behavior is linked to thermally induced alterations in the crystallinity of clay minerals and the organic material. The thermodynamic analysis reveals that the investigated shales have a high affinity to CO2, while adsorption entropy and enthalpy were less compared to CH4. The adsorption isotherms reveal that adsorption of CH4 and CO2 on the shale best modeled by Freundlich isotherm due to surface heterogeneity of the shale and by BET isotherms due to pore filling at high pressure values.
SponsorThe authors would like to acknowledge the support of Qatar National Research Fund (a member of Qatar Foundation ) through Grant # NPRP10-0125-170235. The findings achieved herein are solely the responsibility of the authors. KFUPM is also acknowledged.
Languageen
PublisherElsevier B.V.
SubjectAdsorption isotherms
Carbon dioxide
Clay minerals
Crystallinity
Organic carbon
Organic minerals
Shale gas
Temperature
Thermoanalysis
Adsorption capacities
CO2 adsorption
CO2 sequestration
Maturity
Surface heterogeneities
Temperature-dependent adsorption
Thermo dynamic analysis
Total Organic Carbon
Adsorption
adsorption
carbon dioxide
carbon sequestration
shale gas
total organic carbon
TitleCarbon dioxide EGR and sequestration in mature and immature shale: Adsorption study
TypeArticle
Volume Number188
dc.accessType Abstract Only


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record