Surface energy characterization of sandstone rocks

Arsalan, Naveed; Palayangoda, Sujeewa S.; Burnett, Daniel J.; Buiting, Johannes Jan; Nguyen, Quoc P.

doi:10.1016/j.jpcs.2013.02.027

Cited by 35 publications

(16 citation statements)

References 13 publications

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“…The values of d s obtained with the rocks OKJ21 and OMO62 are close, testifying to similar surface properties. These values are in agreement with those obtained in the literature, for instance, on sandstone originating from Ottawa, (approximately 85 mJ/m 2 , at 353 K), and Berea sandstone originating from Oberlin, Ohio (approximately 60 mJ/m 2 , at 353 K) [7]. The lowest d s value is obtained with the OKN54 rock.…”

Section: Bet Surface Analysissupporting

confidence: 91%

See 1 more Smart Citation

Surface characterization of reservoir rocks by inverse gas chromatography: Effect of a surfactant

Bendada

Hamdi

Boudriche

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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International audienceThe description of the surface chemistry of reservoir rock is essential in understanding the physicochemical interaction between the rock surface and its environment. In this study, inverse gas chromatography (IGC) is used to characterize the surface chemistry of rocks extracted from four petroleum reservoirs in Algeria. By means of IGC at infinite dilution (IGC-ID), the dispersive component of the surface energy (gamma\ₛ (d) over cap), the nanomorphological index LM (chi_t) and the specific component of the surface energy were determined at 100 degrees C. IGC at finite concentration (IGC-FC) was implemented using n-octane and isopropanol probes, allowing the irreversibility indexes and the adsorption isotherms to be obtained. From the latter, the BET specific surface area and BET constant of the injected probes were determined. Energy distribution functions and indexes of heterogeneity were also computed for the n-octane and isopropanol probes. The results showed that the polar probe, isopropanol, interacts more strongly with the rock surface than the apolar probe. In the second part of this study, the influence of a surfactant used in drilling mud on the heterogeneity of the surface energy was investigated. Different surfactant impregnation ratios were examined by means of IGC-FC. The results indicated that the progressive covering of the solid surface by the surfactant hid chemical functions likely to interact with the injected probes and made the surface smooth by covering the roughness of the surface, which led to the decrease in all parameters obtained by IGC-CF. (C) 2016 Published by Elsevier B.V

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Section: Bet Surface Analysissupporting

confidence: 91%

“…This method makes it possible to study the interactions of a probe molecule with the surface adsorption sites. Recently, Arsalan and Palayangoda [7,8], successfully quantified the fundamental interactions of the reservoir rock-fluid system by characterizing the surface energy of sandstone and carbonate rocks using IGC-ID.…”

Section: Introductionmentioning

confidence: 99%

Surface characterization of reservoir rocks by inverse gas chromatography: Effect of a surfactant

Bendada

Hamdi

Boudriche

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…The principle and technique behind IGC measurements has been extensively discussed in the literature [13,14]. In this section, we will describe the process for determining the wettability index for a reservoir rock, in contact with a brine phase and an oil phase.…”

Section: Theorymentioning

confidence: 99%

“…The authors have successfully demonstrated the technique to quantify these fundamental interactions by characterizing the surface energetics of some sandstone and carbonate rocks using inverse gas chromatography [13,14]. Here we extend this technique to a carbonate rock obtained from a Saudi Arabian reservoir.…”

Section: Introductionmentioning

confidence: 98%

Surface energy and wetting behavior of reservoir rocks

Arsalan

Buiting

Nguyen

2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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h i g h l i g h t s• Investigated the surface energy of a reservoir rock using IGC.• Examined the effect of moisture and temperature on their surface energetics.• The surface interaction forces at the rock-fluid interface were quantified.• Proposed a new approach for measuring the wettability index of a rock-fluid system.• Wettability index scales from −1 (strongly oil-wet) to +1 (strongly water-wet). g r a p h i c a l a b s t r a c t a b s t r a c tAn accurate description of the surface chemistry of the reservoir rock-fluid system is essential to understand the attractive forces between the various phases (crudes, brines and the rock surface). These physico-chemical interactions determine the fundamental nature of the reservoir wettability and the wetting behavior of fluids on the reservoir rock surface. Inverse gas chromatography (IGC) is used to characterize the surface chemistry of a Saudi Arabian reservoir rock (henceforth referred to as 'reservoir rock') at different moisture coverage and temperatures. This information combined with the surface tension of the interacting reservoir fluids is utilized to develop a new method for quantifying wettability in terms of a wettability index. This index is based on the relative magnitude of the work of adhesion between the rock surface and the competing oleic/aqueous phase.Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).

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“…Existing literature on numerical modeling is mostly dependent upon the idea that the effective elastic properties of rock mainly depend on the relative amount of minerals present, the elastic properties of each component, the geometrical distribution of each component, and fluid saturation (Schmitt, ). Although experimental studies confirmed the impact of humidity on the strength and stiffness of rock (Arsalan et al, ; Martin, ; Orowan, ; Pimienta et al, ; Razvi, ), it was not addressed in existing numerical studies. Since the surface energy of minerals is directly proportional to exposed surface area (Bentz et al, ), the humidity is expected to be more relevant to the development of fine‐grained thin‐bedded sandstone reservoirs, gas reservoirs, or chalk reservoirs where humidity effect is more pronounced due to increasing exposed surface area (Hossain, ).…”

Section: Introductionmentioning

confidence: 99%

Humidity Effects on Effective Elastic Properties of Rock: An Integrated Experimental and Numerical Study

et al. 2019

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The surface energy of minerals increases due to a loss of humidity. In rocks this leads to strains without applying external stress (stress‐free strain) and affects the rocks' elastic response. We utilize finite element calculations on X‐ray micro‐CT images to analyze the extreme cases of surface energy contributions and no surface energy contributions for the small strain case. Including surface energy utilizing published surface energies of quartz significantly increases the simulated bulk modulus. Grain contacts are considered perfectly cemented and therefore do not contribute to this difference. Confining pressure is not applied in the experiment to estimate the impact of surface energy to avoid the effect of grain contact slippage due to different stress paths. In addition, we compare simulated moduli with experimentally determined parameters. In this case, we incorporate confining pressure in the experiment since grain contacts are not considered in the simulation. The main reason to use confining pressure in the experiment here is to close the grain contacts with a view that the resulting porosity reduction is negligible.

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Surface energy characterization of sandstone rocks

Cited by 35 publications

References 13 publications

Surface characterization of reservoir rocks by inverse gas chromatography: Effect of a surfactant

Surface characterization of reservoir rocks by inverse gas chromatography: Effect of a surfactant

Surface energy and wetting behavior of reservoir rocks

Humidity Effects on Effective Elastic Properties of Rock: An Integrated Experimental and Numerical Study

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