Influence of shale-total organic content on CO2 geo-storage potential
MetadataShow full item record
Copyright © 2017 The American Geophysical Union. Reproduced with permission.
©2017. American Geophysical Union. All Rights Reserved. Shale CO 2 wettability is a key factor which determines the structural trapping capacity of a caprock. However, the influence of shale-total organic content (TOC) on wettability (and thus on storage potential) has not been evaluated despite the fact that naturally occurring shale formations can vary dramatically in TOC, and that even minute TOC strongly affects storage capacities and containment security. Thus, there is a serious lack of understanding in terms of how shale, with varying organic content, performs in a CO 2 geo-storage context. We demonstrate here that CO 2 -wettability scales with shale-TOC at storage conditions, and we propose that if TOC is low, shale is suitable as a caprock in conventional structural trapping scenarios, while if TOC is ultrahigh to medium, the shale itself is suitable as a storage medium (via adsorption trapping after CO 2 injection through fractured horizontal wells).
Showing items related by title, author, creator and subject.
A review on the influence of CO2/shale interaction on shale properties: Implications of CCS in shalesFatah, Ahmed ; Bennour, Ziad ; Ben Mahmud, Hisham ; Gholami, Raoof ; Hossain, Mofazzal (2020)© 2020 by the authors. Carbon capture and storage (CCS) is a developed technology to minimize CO2 emissions and reduce global climate change. Currently, shale gas formations are considered as a suitable target for CO2 ...
CO2 Wettability of Shales and Coals as a Function of Pressure, Temperature and Rank: Implications for CO2 Sequestration and Enhanced Methane RecoveryArif, M.; Barifcani, Ahmed; Zubair, T.; Lebedev, Maxim; Iglauer, Stefan (2016)The underground geological CO 2 storage into oil and gas reservoirs and/or saline aquifers is a promosing technique to reduce anthropogenic greenhouse gas emissions which thus ensures clean environment. CO 2 can also be ...
Evaluation of pore size spectrum of gas shale reservoirs using low pressure nitrogen adsorption, gas expansion and mercury porosimetry: A case study from the Perth and Canning Basins, Western AustraliaLabani, M.; Rezaee, Reza; Saeedi, Ali; Al Hinai, Adnan (2013)Gas shales have a complex pore structure. Mechanisms of gas storage in the gas shale pore system are in two ways, free gas and sorbed gas. The nanometer scaled pore systems of gas shale reservoirs have a prominent ...