Evaluating the role of salts on wettability alteration in dolomite rocks: Possibility of water based oil mobilization application

Tripathi, Rishabh; Hembram, Bidesh Kumar; Chaturvedi, Krishna Raghav; Sharma, Tushar; Nair, Vishnu Chandrasekharan

doi:10.1016/j.molliq.2023.122738

Cited by 6 publications

(1 citation statement)

References 75 publications

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“…These interactions are key to understanding phenomena such as karst landscape formation, atmospheric CO 2 sequestration, and enhancing oil recovery from subsurface reservoirs. At the heart of these processes lies wettability, the measure of a liquid’s capacity to maintain contact with a solid surface, which significantly influences the efficiency of oil recovery and other fluid–mineral interactions. − Despite the well-acknowledged importance of wettability, the mechanisms behind its alteration, particularly in the context of oil recovery from carbonate rocks using low salinity or ionic-modified water injections, remain incompletely understood. − The complexity arises from the multitude of factors at play, including thermodynamic conditions, rock mineralogy, and the interactions with crude oil’s acidic and basic components. A deeper exploration into these aspects is essential, necessitating a decoupling of the rock’s physical morphology from its chemical composition to unravel the intricacies of wettability alteration mechanisms …”

Section: Introductionmentioning

confidence: 99%

Correlation between Wettability and Dissolution of Calcite in Ion-Free Water

AlMahri,

Lu,

Chen

et al. 2024

J. Phys. Chem. C

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Calcite, a prevalent mineral in the earth's crust, plays a pivotal role in various geological and industrial processes, including carbon sequestration, water treatment, and enhanced oil recovery. Understanding how wettability (a crucial surface property influenced by the interaction between calcite and surrounding fluids) affects calcite's dissolution is essential for optimizing these processes. We conducted a series of experiments to study the wettability and its relation to calcite dissolution of an atomically flat calcite surface under deionized water. This system provides a simple environment that allows us to study the wettability alteration in the absence of external ions except the one generated during the dissolution process. Using macroscopic, microscopic, and nanoscopic analytical techniques, we observed that surface evolution progresses from the initial formation of chemical heterogeneities to the gradual growth of a surface water layer strongly bonded to the calcite surface on the time scale of hours as the system reaches an equilibrium state. We also show that the surface evolution is directly related to the calcite dissolution, and it depends on the degree of solution saturation. This research not only sheds light on fundamental aspects of calcite behavior in aqueous solutions but also establishes a foundation for future studies aiming to manipulate mineral surfaces for enhanced performance in their respective applications.

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Section: Introductionmentioning

confidence: 99%

Correlation between Wettability and Dissolution of Calcite in Ion-Free Water

AlMahri,

Lu,

Chen

et al. 2024

J. Phys. Chem. C

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Unique emulsifying and interfacial properties of SP oil: Enhanced emulsification at higher temperatures

He,

Pu,

Shi

et al. 2024

Journal of Molecular Liquids

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Pore-scale numerical investigation on spontaneous imbibition in natural fracture with heterogeneous wettability using the volume of fluid method

Peng,

Xia,

et al. 2024

Physics of Fluids

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Understanding the spontaneous imbibition in the natural fracture with heterogeneous wettability is crucial for predicting and mitigating the impacts of unstable displacement on unconventional recovery. In this paper, the fracture structured mesh model is reconstructed based on the micro-computed tomography (micro-CT) image of naturally fractured tight sandstone. The mineralogy map-based modeling method for heterogeneous-wetting fracture is developed by combining the thin section images, X-ray diffraction (XRD) analysis, and multiple point statistics method. The simulation of the single-phase flow is performed to test the mesh independence. The effects of gravity and wettability on spontaneous imbibition in natural fracture and corresponding imbibition front dynamics are analyzed and discussed using the volume of fluid (VOF) method. The results show that (1) The structured mesh reconstruction method proposed in this paper can more effectively preserve the fracture structure compared to the unstructured mesh reconstruction method. (2) Gravity has a negligible impact on the pore-scale spontaneous imbibition in natural fracture. Under homogeneous-wetting conditions, spontaneous imbibition in natural fracture consistently exhibits stable displacement without significant residual gas formation. However, under the heterogeneous-wetting condition, the spontaneous imbibition displays typical capillary fingering, resulting in approximately 24.04% of the gas being trapped after spontaneous imbibition. The residual gas trapping mechanisms mainly include adhered, isolated, and connected gas. (3) Under both homogeneous- and heterogeneous-wetting conditions, the imbibing water saturation and the length of the imbibition front are proportional to the power of imbibition time during spontaneous imbibition in the natural fracture.

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Evaluating the role of salts on wettability alteration in dolomite rocks: Possibility of water based oil mobilization application

Cited by 6 publications

References 75 publications

Correlation between Wettability and Dissolution of Calcite in Ion-Free Water

Correlation between Wettability and Dissolution of Calcite in Ion-Free Water

Unique emulsifying and interfacial properties of SP oil: Enhanced emulsification at higher temperatures

Pore-scale numerical investigation on spontaneous imbibition in natural fracture with heterogeneous wettability using the volume of fluid method

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