On the affinity of carbonate and sandstone reservoir rocks to scale formation – Impact of rock roughness

Nikoo, Amir Hossein; Malayeri, M.R.

doi:10.1016/j.colsurfa.2020.125699

Cited by 10 publications

(15 citation statements)

References 33 publications

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“…It is finally worth noting that the wettability alteration through adhesion of gypsum crystals onto the rock surfaces would affect the geometrical interactions in terms of roughness (magnitude, type, and shape). In this respect, Nikoo and Malayeri showed an increase in the degree of roughness, which, in turn, would lead to higher scaling affinity of the rocks as per intermolecular interactions. This is mainly because the roughened parts of the rocks may act as new nucleation sites.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The deposition process is closely associated with the various aspects of interactions between scale, brine, and the rock surface. − As illustrated in Figure , these interactions could be categorized into geochemical and interfacial forms. The geochemical interactions are based on the potential chemical reactions between the ionic species present in brines and during the interaction with rock surfaces at an equilibrium state.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, it would be feasible to scrutinize the interfacial phenomena of inorganic scale precipitation from the brine and scale formation on the rock surface . From a geometrical perspective, the impact of rock surface topography in terms of roughness and porosity on the molecular interactions is imperative and should also be taken into consideration. , Nikoo and Malayeri examined the impact of the roughness of different rock surfaces on their potency to scale formation. They reported that more scale would be deposited as surface roughness increases, likely due to nucleation of crystals during the initiation subprocess (see Figure ).…”

Section: Introductionmentioning

confidence: 99%

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Impact of Hydrodynamic and Interfacial Interactions on Scale Formation in a Capillary Microchannel

Nikoo

Malayeri

2021

Langmuir

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This study proposes a model for the kinetics and hydrodynamics of gypsum scale deposition on surfaces of anhydrite, calcite, dolomite, and sandstone rocks while interacting with the brines of 3000 and 6000 mg/L [Ca2+] at 363 K and 1 atm. To do so, this study utilizes the surface energy characteristics of an interacting scale–brine–rock system as well as the geochemical interactions between brine–brine and brine–rock. The results showed that the deposition flux decreases steeply over time, followed by asymptotic propensity as time elapses. A higher degree of salinity in terms of [Ca2+] increases the deposition flux as much as 2.9-fold for the flowing velocity of 10–6 m/s and 2.4-fold for a velocity of 10–5 m/s. Moreover, higher flow velocity would lead to more deposition on sandstone followed by carbonate and anhydrite rocks: ∼2.6-fold for the salinity of 3000 mg/L and 2.2-fold for 6000 mg/L [Ca2+].

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Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of Hydrodynamic and Interfacial Interactions on Scale Formation in a Capillary Microchannel

Nikoo

Malayeri

2021

Langmuir

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“…Studies have shown that sulfate scales can alter the surface properties and wetting behavior of rock surfaces. ,, Although an extensive body of literature is available for bulk precipitation reactions, , only a limited number of published articles ,− focus on the effect of scales on rock surface chemistry which greatly influences its wetting behavior. Nikoo and Malayeri examined sulfate scale/brine/rock interfacial interactions and the rock wettability due to CaSO 4 crystals. The authors used anhydrite, calcite, dolomite, and sandstone for their study and findings showed that the rocks become prone to scale formation and deposition as the fluid salinity and rock surface roughness are increased.…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge, the available published works , which have precisely investigated the affinity of the rock surface to scale formation are limited. Also, the wettability alteration potential of deposited scales on carbonate rock surfaces has not been investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sulfate-Based Scales on Calcite Mineral Surface Chemistry: Insights from Zeta-Potential Experiments and Their Implications on Wettability

et al. 2022

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Scale formation and deposition in the subsurface and surface facilities have been recognized as a major cause of flow assurance issues in the oil and gas industry. Sulfate-based scales such as sulfates of calcium (anhydrite and gypsum) and barium (barite) are some of the commonly encountered scales during hydrocarbon production operations. Oilfield scales are a well-known flow assurance problem, which occurs mainly due to the mixing of incompatible brines. Researchers have largely focused on the rocks’ petrophysical property modifications (permeability and porosity damage) caused by scale precipitation and deposition. Little or no attention has been paid to their influence on the surface charge and wettability of calcite minerals. Thus, this study investigates the effect of anhydrite and barite scales’ presence on the calcite mineral surface charge and their propensity to alter the wetting state of calcite minerals. This was achieved vis-à-vis zeta-potential (ζ-potential) measurement. Furthermore, two modes of the scale control (slug and continuous injections) using ethylenediaminetetraacetic acid (EDTA) were examined to determine the optimal control strategy as well as the optimal inhibitor dosage. Results showed that the presence of anhydrite and barite scales in a calcite reservoir affects the colloidal stability of the system, thus posing a threat of precipitation, which would result in permeability and porosity damage. Also, the calcite mineral surface charge is affected by the presence of calcium and barium sulfate scales; however, the magnitude of change in the surface charge via ζ-potential measurement is insignificant to cause wettability alteration by the mineral scales. Slug and continuous injections of EDTA were implemented, with the optimal scale control strategy being the continuous injection of EDTA solutions. The optimal dosage of EDTA for anhydrite scale control is 5 and 1 wt % for the formation water and seawater environments, respectively. In the case of barite, in both environments, an EDTA dosage of 1 wt % suffices. Findings from this study not only further the understanding of the scale effects on calcite mineral systems but also provide critical insights into the potential of scale formation and their mechanisms of interactions for better injection planning and the development of a scale control strategy.

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Crystallization fouling of turbo-structured tubes during nucleate pool boiling

Esawy

Nikoo

Malayeri

2023

Applied Thermal Engineering

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On the affinity of carbonate and sandstone reservoir rocks to scale formation – Impact of rock roughness

Cited by 10 publications

References 33 publications

Impact of Hydrodynamic and Interfacial Interactions on Scale Formation in a Capillary Microchannel

Impact of Hydrodynamic and Interfacial Interactions on Scale Formation in a Capillary Microchannel

Effect of Sulfate-Based Scales on Calcite Mineral Surface Chemistry: Insights from Zeta-Potential Experiments and Their Implications on Wettability

Crystallization fouling of turbo-structured tubes during nucleate pool boiling

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