Optimum Formation Depths for CO2 Structural Trapping: Impact of Salinity

Petroleum Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Coal Wettability: A Holistic Overview of the Data Sets, Influencing Factors, and Knowledge Gaps

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(16), P. 15069 - 15084

Published: Aug. 1, 2024

Coal seams are naturally occurring geological media offering tremendous potential for gas storage. The wetting characteristics of coals at typical formations underpin a diverse array processes spanning coal resource recovery, combustion, enhanced beneficiation, methane and CO2 storage sustainable energy transition. An accurate characterization wettability is thus crucial remains an active area research. intrinsic heterogeneity surfaces the presence multicomponent systems add layers intricacy to behavior. In particular, challenging because it complex multifaceted function range influencing parameters. These include parameters (such as rank, ash content, microstructure), operating conditions (e.g., injection pressure, seam temperature, salinity), sample conditioning factors surface roughness, polishing, cleaning, etc.). This study develops repository data sets (using contact angle measurements, nuclear magnetic resonance method, spontaneous imbibition) conditions. critically analyzed explained. We also identify limitations related measurement techniques present outlook future research in this area. findings suggest that coal/CO2/brine exhibit from weakly water-wet strongly CO2-wet. main contributing increased but not limited high low moderate temperatures, salinity, vitrinite reflectance. Thus, offers succinct analysis sets, presents overview cutting-edge technologies, discusses advances field improve understanding associated impact on fluid flow microstructure.

Language: Английский

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Impact of petrophysical properties on CO2 residual trapping in limestone formations

Fuel, Journal Year: 2025, Volume and Issue: 396, P. 135327 - 135327

Published: April 10, 2025

Language: Английский

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Rock Permeability Effect on Residual CO2 Trapping Efficiency in Carbonate Formations

Offshore Technology Conference, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Abstract The degree of success CO2 storage depends on many factors that control the safety and efficiency such projects. Formation permeability is considered one main affecting this promising technique. Specifically, it controls trapped by residual trapping, trapping mechanisms. Therefore, need to provide deeper insights how latter can affect highly desired. scope study explore experimentally effect rock properties, particularly in carbonate/brine/CO2 geo-systems. Carbonate Limestone samples are selected with different ranges i.e., low (4-5 mD), mid (20-30 mD) high (>60 mD). Full characterization core was done first including SEM, NMR, XRD analysis generation capillary pressure curves. Later, a series flooding experiments carried out at supercritical conditions (P= 10 MPa T= 323 K). Unsteady state method adopted for process including: 1) Drainage determine initial saturation (Sgi), 2) Imbibition (Sgr) constant flow rate 0.5 mL/min both. Finally, assessed material balance approach. results indicate stored dependent properties associated pore network. Notably, carbonate rocks low, moderate significantly influence capacity. As observation, found no proper correlation exists between Sgi Sgr when increases. However, decreases increase which implies narrow size distribution better candidates trapping. After detecting great discrepancy literature regarding carbonate/CO2/brine system, due scarcity data sets generated research area, further needed contribute establishment well-defined trends behavior. This presents thorough examination limestone reservoirs.

Language: Английский

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Estimation of CO₂-Brine Interfacial Tension Based on an Advanced Intelligent Algorithm Model: Application for Carbon Saline Aquifer Sequestration

ACS Omega, Journal Year: 2024, Volume and Issue: 9(35), P. 37265 - 37277

Published: Aug. 19, 2024

The emission reduction of the main greenhouse gas, CO

Language: Английский

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