Visualization of fluid displacements in porous media using computed tomography imaging

Peters, Ekwere J.; Hardham, William D.

doi:10.1016/0920-4105(90)90023-v

Cited by 53 publications

(15 citation statements)

References 13 publications

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“…Subsequently the initial mobile phase is displaced by a second mobile phase (MP2) having a distinct composition. During the duration of the breakthrough the CT-number depends on the mobile phase saturation S and is given by (Peters and Hardham 1990).…”

Section: Computational Tomographymentioning

confidence: 99%

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Experimental investigation of liquid chromatography columns by means of computed tomography

Astrath

Lottes

et al. 2007

Adsorption

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The efficiency of packed chromatographic columns was investigated experimentally by means of computed tomography (CT) techniques. The measurements were carried out by monitoring tracer fronts in situ inside the chromatographic columns. The experimental results were fitted using the equilibrium dispersive model (EDM) and varying the so called apparent axial dispersion coefficient. The additivity of the first and second central moments was exploited to estimate column efficiency in different regions of the column.The results showed that the columns under investigation offered a higher column efficiency in the centre compared to the wall region. Furthermore the void fraction in the vicinity of the walls was lower than that in the column core. For this reason the bands were conveyed faster in the central region of the column where the permeability was higher. This result is in good agreement with earlier findings.

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Section: Computational Tomographymentioning

confidence: 99%

“…It can be used to gain insight into a variety of physical phenomena associated with transport in porous media (Chaouki et al 1997;Peters et al 1996;Karacan 2003) and found special attention for the investigation of problems related to the production of reservoir fluids (Peters and Hardham 1990;Mogensen et al 2001;Schembre and Kovscek 1996).…”

mentioning

confidence: 99%

Experimental investigation of liquid chromatography columns by means of computed tomography

Astrath

Lottes

et al. 2007

Adsorption

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“…Donde a es una aproximación del coeficiente de energía independiente llamado coeficiente Klein-Nishina y b es una constante (Evans, 1955), (Peters & Hardham, 1990). El primer término de la ecuación 2, representa el efecto Compton, el cual es predominante a energías de rayo-X por encima de 100 kV.…”

Section: Tomografia Computarizadaunclassified

“…Los artefactos son características de la imagen que son producidas por el procesamiento de la misma y no están presentes en el objeto original (Peters & Hardham, 1990). El artefacto más conocido es el Beam Hardening o endurecimiento del rayo que existe debido a que los fotones que componen el rayo X, son más fácilmente atenuados a una baja energía (E<100 kV).…”

Section: Artefactos De Imagenunclassified

Efectos de productos dopantes en fluidos para pruebas de desplazamiento usando tomografia computarizada

Hernández¹,

Santos²,

Otero³

2017

revfue

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*A quien debe dirigirse la correspondencia RESUMENEn Colombia se está innovando en el uso de la tomografía computarizada para el estudio de métodos de recobro mejorado que puedan ser aplicados en campos maduros, es decir, aquellos que han alcanzado el pico máximo de producción y han entrado en una etapa de declinación. La tomografía computarizada ha mostrado sus ventajas en la industria médica, entre otras. La técnica se basa en el uso de rayos X para obtener cortes o secciones reconstruidas digitalmente de fluidos, objetos o materiales.La visualización de fluidos puede ser mejorada empleando productos de contraste o también conocidos como dopantes. En la industria de los hidrocarburos, dichos productos son usados en pruebas de desplazamiento con el fin de generar una diferenciación gráfica notable entre los fluidos inyectados en la roca. Su uso ha sido poco documentado, por lo cual, la presente investigación tiene como objetivo realizar un estudio inicial sobre el efecto que tendrán los dopantes en la visualización de imágenes y en la viscosidad de fluidos. Para esto, se llevó a cabo una búsqueda bibliográfica sobre el efecto en la visualización de las imágenes resultantes del proceso. Además, se elaboró y aplicó un diseño experimental para evaluar el efecto de este tipo productos en la viscosidad de 2 fluidos hidrocarburos y una salmuera. Lo anterior, apuntando a establecer bases conceptuales y experimentales que contribuyan a la curva de aprendizaje acerca del uso de esta técnica en la ingeniería de petróleos.Palabras clave: Dopantes, Tomografía computarizada, Viscosidad. effects of dopant products on fluids for core flooding tests using computed tomography. ABSTRACTColombia is innovating in the use of computerized tomography for the study of enhanced oil recovery methods that could be applied on mature fields, i.e., those that have reached the maximum production and have entered in a declining stage. The computerized tomography has proven advantageous in the medical field and among others. The technique is based in the use of X rays to obtain digitally reconstructed cross sections from fluids, objects or materials.The fluids visualization can be improved using contrast products, also known as dopants. In the petroleum industry, those products are used in displacement tests with the purpose of generating a remarkable contrast for the injected 1.

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“…There have been a number of published applications of CT scanning in reservoir characterization (Withjack et al, 1991;Kantzas, 1990;Hicks et al, 1992) and fluid flow visualization (Wang et al, 1984;Peters and Hardham, 1990;Vinegar and Wellington, 1987;Hove et al, 1987). Many of these studies have only dealt with qualitative analyses of CT images and have not sought to determine properties useful for describing fluid storage or transport.…”

Section: Introductionmentioning

confidence: 98%

X‐ray computed tomography studies of gas storage and transport in Devonian shales

Lu¹,

Peng²,

Watson³

et al. 1994

AIChE Journal

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Devonian shales and other unconventional resources can be highly fractured and may have significant amounts of gas stored by adsorption. Conventional experiments are not well suited for characterizing the properties important for describing gas storage and transport in these media. Here, X‐ray computed tomography scanning is used to determine gas storage in dynamic gas flow experiments on Devonian shale samples. Several important properties are obtained from these experiments, including fracture widths, adsorption isotherms, and matrix porosities and permeabilities.

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Visualization of fluid displacements in porous media using computed tomography imaging

Cited by 53 publications

References 13 publications

Experimental investigation of liquid chromatography columns by means of computed tomography

Experimental investigation of liquid chromatography columns by means of computed tomography

Efectos de productos dopantes en fluidos para pruebas de desplazamiento usando tomografia computarizada

X‐ray computed tomography studies of gas storage and transport in Devonian shales

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