Experimental Investigation of Emulsion Stability in Gas/Oil Separation Plants

Alghamdi, Abdullah; Noı̈k, Christine; Dalmazzone, Christine; Kokal, Sunil

doi:10.2118/109888-pa

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…From a practical point of view, it is relatively easy to get a rapid signature of the morphology and composition of real emulsions directly sampled from the oilfield by using microcalorimetry [63,90]. Figure 18 gives the example of 2 different W/O emulsions.…”

Section: Crude Oil Emulsions In Productionmentioning

confidence: 99%

“…In addition to these information, it is worth mentioning that it is possible to determine the approximate water content of the emulsion by integrating the melting signal in so far as samples of the associated free water phase are available in order to get a proper determination of the melting enthalpy. Of course, the quantity of emulsion analyzed by DSC being very small (a few mgs) it is recommended to confirm the water content by a Karl Fisher titration especially in the case of polydisperse systems [90]. Another interesting application of engineering concerns the field of emulsions breaking by electrocoalescence [87].…”

Section: Crude Oil Emulsions In Productionmentioning

confidence: 99%

See 1 more Smart Citation

Freezing Within Emulsions: Theoretical Aspects and Engineering Applications

Clausse

Dalmazzone

2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Conge´lation dans les e´mulsions : aspects the´oriques et applications techniques -Cet article se concentre principalement sur le comportement a`la conge´lation des e´mulsions qui sont conside´re´es soit comme des syste`mes permettant d'obtenir des informations sur les mate´riaux en surfusion, soit comme des syste`mes disperse´s complexes implique´s dans les proce´de´s industriels. En raison du fait qu'il existe une phase disperse´e sous forme de fines gouttelettes dans les e´mulsions, des retards a`la solidification sont observe´s et les gouttelettes de liquide persistent meˆme en dessous du point de fusion du mate´riau. La corre´lation entre la tempe´rature de solidification des gouttelettes et leur taille peut eˆtre donc utilise´e pour suivre l'e´volution de la morphologie de l'e´mulsion en fonction du temps aussi bien sur terre que dans des conditions de microgravite´(projet FASES soutenu par l'ESA). Une description de ces phe´nome`nes observe´s principalement par microcalorime´trie sera donne´e pour des corps purs disperse´s ainsi que pour des solutions disperse´es. Dans certains cas, les e´mulsions peuvent eˆtre recherche´es pour leurs proprie´te´s spe´cifiques, telles que la grande taille de l'interface huile/eau, conduisant a`des transferts de masse ame´liore´s; les e´mulsions peuvent eˆtre par conse´quent utilise´es comme des membranes liquides pour l'extraction, le stockage et la libe´ration controˆle´e de matie`res actives. Dans d'autres cas, la formation d'e´mulsions a un effet ne´faste sur les proce´de´s, comme dans l'industrie pe´trolie`re ou`des e´mulsions eau-dans-pe´trole tre`s stables se forment facilement et compliquent l'ope´ration de de´shydratation du pe´trole brut.Abstract -Freezing Within Emulsions: Theoretical Aspects and Engineering Applications -This article is mainly focused on the freezing behaviour of emulsions which will be considered either as systems permitting to get information about undercooled materials or as complex dispersed systems involved in industrial processes. Due to the fact that there exists a phase dispersed as tiny droplets in emulsions, solidification delays are observed and liquid droplets are still observed under the melting points of pure materials. The correlation between the solidification temperature of the droplets and their size may be therefore used to follow the evolution of the emulsion morphology versus time on ground as in microgravity conditions (FASES project supported by ESA). A description of these phenomena mainly observed through microcalorimetry experiments will be given for dispersed pure materials as for dispersed solutions. In some cases, emulsions may be sought after for their specific properties, such as their large oil/ water interface, leading to enhanced mass transfers; emulsions may be consequently used as liquid membranes for extraction, storage and controlled release of active materials. In other cases, the formation of emulsions has a detrimental effect on the process. It is the case in the oil industry where very stable w...

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Section: Crude Oil Emulsions In Productionmentioning

confidence: 99%

Section: Crude Oil Emulsions In Productionmentioning

confidence: 99%

Freezing Within Emulsions: Theoretical Aspects and Engineering Applications

Clausse

Dalmazzone

2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…dehydration system, increased consumption of demulsifier, and increased energy costs for heating [2]. Furthermore, the water content of the dehydrated oil may not meet the commercial standards.…”

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confidence: 99%

Dehydration of Aging Oil by an Electrochemical Method

Wang

Feng

et al. 2014

Chem Technol Fuels Oils

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properties of aging oil and consider the reasons for its accumulation. It has been shown that dehydration of this oil by only a chemical or an electrostatic method is inefficient. Combining these two methods provides a degree of demulsification for which the water content in the oil and the oil content in the water meet the industrial standard. We consider the details of operation of an electrostatic dehydrator in processing aging oil having high solids and iron contents and high emulsion stability. We select the optimal conditions and design an industrial process for dehydration of aging oil.

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Numerical investigation of the segregation of turbulent emulsions

et al. 2022

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We study the segregation of emulsions in decaying turbulence using direct numerical simulations in combination with the volume of fluid method. To this end, we generate emulsions in forced homogeneous isotropic turbulence and then turn the forcing off and activate the gravitational acceleration. This allows us to study the segregation process in decaying turbulence and under gravity. We consider non-iso-density emulsions, where the dispersed phase is the lighter one. The segregation process is driven by both the minimization of the potential energy achieved by the sinking of the heavier phase as well as the minimization of the surface energy achieved by coalescence. To study these two processes and their impacts on the segregation progress in detail, we consider different buoyancy forces and surface tension coefficients in our investigation, resulting in five different configurations. The surface tension coefficient also alters the droplet size distribution of the emulsion. Using the three-dimensional simulation results and the monitored data, we analyze the driving mechanisms and their impact on the segregation progress in detail. We propose a dimensionless number that reflects the energy release dominating the segregation. Moreover, we evaluate the time required for the rise of the lighter phase and study correlations with the varied parameters: gravitational acceleration and surface tension coefficient.

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Experimental Investigation of Emulsion Stability in Gas/Oil Separation Plants

Cited by 7 publications

References 20 publications

Freezing Within Emulsions: Theoretical Aspects and Engineering Applications

Freezing Within Emulsions: Theoretical Aspects and Engineering Applications

Dehydration of Aging Oil by an Electrochemical Method

Numerical investigation of the segregation of turbulent emulsions

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