Gypsum-brine-dolomite interfacial interactions in the presence of scale inhibitor

Nikoo, Amir Hossein; Mahmoodi, Leila; Malayeri, M.R.; Kalantariasl, Azim

doi:10.1016/j.ces.2020.115718

Cited by 23 publications

(22 citation statements)

References 46 publications

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“…Moreover, both carbonated and sulfated particles were observed in Figure 1, confirming a complex multi-scale system thatwill be subsequently treated through the utilization of scale inhibitors. It is noteworthy that these results willreliably resemble experimental standard test conditions for a vessel [28].…”

Section: Fig 1determination Of Scale Potentialsupporting

confidence: 64%

“…(3) Firstly, the critical mixing ratio of the two brines is examined to find out the maximum amount of precipitated particles at 90˚C and atmospheric pressure [21,28,29] necessary to simulate incompatible mixing process athigh-temperature standard static tests. Secondly, the critical mixing ratio test is conducted to assess the various dosage of the SI to evaluate the optimum dosage of the SI.…”

Section: Caso So Camentioning

confidence: 99%

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Performance of a novel green scale inhibitor

2021

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Many aspects of oilfield scale inhibition with green scale inhibi-tors (SIs) have remained untouched. For instance, the discharge of large amounts of produced water containing various types of hazardous chemi-cals, such as SIs into the environment has become a major concern. In-stead, environmental regulators encourage operators to look for greener SIs. In this study, the performance of a green SI was investigated using PHREEQC simulation. For a specific case study, two brines are considered to mix incompatibly to estimate the critical mixing ratio that has the high-est tendency to scaling. Subsequently, for 50/50 mixing ratio as the critical value, theoptimal dosage of SI and its performance in the presence of two different rocks were investigated such that 450 mg/L SI would be consi-dered as optimal value. Moreover, the simulated results show that more SI adsorption on calcite would be predicted, compared to dolomite.

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Section: Fig 1determination Of Scale Potentialsupporting

confidence: 64%

Section: Caso So Camentioning

confidence: 99%

Performance of a novel green scale inhibitor

2021

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“…The rectangular microchannel was assumed to investigate the brine−rock interfacial interactions 7,8 based on the interacting system of a spherical gypsum scale−rock surface.…”

Section: Modeling Of Scale Deposition Based On Brine−rock Interactionsmentioning

confidence: 99%

“…To model the deposition of gypsum scale on rock surfaces while interacting with the brines, a rectangular capillary microchannel has been considered, as illustrated in Figure . The rectangular microchannel was assumed to investigate the brine–rock interfacial interactions , based on the interacting system of a spherical gypsum scale–rock surface.…”

Section: Modeling Of Scale Deposition Based On Brine–rock Interactionsmentioning

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%

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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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