Porosity evolution of Minhe oil shale under an open rapid heating system and the carbon storage potentials

Daming Niu, Pingchang Sun, Lin Ma, Kang'an Zhao and Cong Ding

Renewable Energy, 2023, vol. 205, issue C, 783-799

Abstract: The ideal non-collapse heated oil shale reservoir may lead to the maximum preservation of pores and fractures. However, the previous research on the pore evolution during heating in oil shale reservoirs has focused only on the analysis of capillary pores, ignoring the supercapillary pores (including fractures) that can provide the free flow of fluid. Through open thermal system experiments, combined with multi-scale visual statistics and quantitative testing, this paper reveals that the surface porosity of supercapillary pores increased from 0.27% to 15.95% and the porosity of capillary pores and microcapillary pores increased from 0% to 39.55%, in which the contribution rate of organic matter pores increased from 2.36% to 87.46%. From the perspective of the trap, we propose that the displacement pressure, breakdown pressure and overburden pressure of surrounding rock determine the pressure of injected CO2. Regarding the adsorption and free state, through an improved formula for carbon storage potentials, the maximum theoretical CO2 storage per unit volume for the Minhe depleted oil shale reservoir was estimated to be approximately 0.261 × 109 t/km3. Thus, a depleted oil shale reservoir is a suitable place for CO2 storage owing to the large storage potential.

Keywords: Oil shale; Thermal simulation; Reservoir physical property evolution; Open system; Carbon storage (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148123001647
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:205:y:2023:i:c:p:783-799

DOI: 10.1016/j.renene.2023.02.020

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().