Applications of mercury intrusion capillary pressure for pore structures: A review

Liang, Jenn‐Tai; Andersen, Pål Østebø; Zhou, Junping; Cai, Jingong

doi:10.46690/capi.2020.04.02

Cited by 19 publications

(12 citation statements)

References 72 publications

(73 reference statements)

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“…La porosidad conectada a lo largo del eje Z (Figura 8B) permitió ejecutar una simulación de la presión capilar por el método de inyección de mercurio. La simulación calcula la presión capilar a partir de la ecuación de Young-Laplace (Jiao et al, 2020):…”

Section: Fracción Volumétrica Vóxeles Segmentados Vóxeles Totalesunclassified

Revisión de técnicas microscópicas para modelos digitales de roca

Lozano

Juliao-Lemus

Pérez

et al. 2022

Boletín de Geología

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Los yacimientos no convencionales (roca generadora) representan una nueva etapa en la exploración y explotación de petróleo y gas a nivel mundial, y su caracterización petrofísica sigue siendo un desafío, debido a las bajas permeabilidades, los altos niveles de heterogeneidad y la dificultad de adaptación de las técnicas convencionales. La petrofísica digital surge como una alternativa que aprovecha los últimos avances en la microscopía electrónica, la tomografía computarizada y el procesamiento computacional para, a través de métodos numéricos y algoritmos de conteo de vóxel, estimar las propiedades petrofísicas en lo que se denomina un modelo de roca digital. En este trabajo se realiza una revisión de las técnicas de caracterización digital y su aplicación en muestras de yacimientos no convencionales pertenecientes a la Formación Vaca Muerta (Argentina) y Formación La Luna (Colombia). Con esta tecnología es posible visualizar el espacio poroso a escala micro- y nanométrica, con el fin de obtener información cualitativa (tipos de poro y microfracturas) y cuantitativa (porosidad, permeabilidad absoluta, distribución de tamaño de poro, cantidad de materia orgánica y propiedades petrofísicas avanzadas). Los resultados obtenidos indican que las muestras FIB-SEM se encuentran por debajo del volumen elemental representativo y que las muestras digitales con mayores dimensiones, aunque más representativas, requieren de una mayor capacidad computacional. El escalamiento de las propiedades petrofísicas, la falta de conectividad del medio poroso y la baja representatividad son las principales limitantes presentes en la tecnología. Sin embargo, su potencial aumenta conforme la inteligencia artificial, la simulación y el machine learning toman fuerza en la industria del petróleo.

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Section: Fracción Volumétrica Vóxeles Segmentados Vóxeles Totalesunclassified

Revisión de técnicas microscópicas para modelos digitales de roca

Lozano

Juliao-Lemus

Pérez

et al. 2022

Boletín de Geología

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“…Rouquerol et al (2012) reviewed the limitations and operating conditions of some porosimetry methods used to characterize porous materials having pore widths in the macropore range of 50-500 μm, including MIP and X-ray microtomography. Moreover, Jiao et al (2020) recently reviewed the latest applications and improvement of MIP, discussing the limitations and future directions for this technique. In particular, the maximum mercury intrusion capillary pressure applied during an MIP experiment is of approximately 276 MPa, which means that mercury theoretically enters a minimum pore opening radius as small as 2.7 nm (Jiao et al 2020;Wang et al 2018).…”

Section: Mip Laboratory Testsmentioning

confidence: 99%

“…Moreover, Jiao et al (2020) recently reviewed the latest applications and improvement of MIP, discussing the limitations and future directions for this technique. In particular, the maximum mercury intrusion capillary pressure applied during an MIP experiment is of approximately 276 MPa, which means that mercury theoretically enters a minimum pore opening radius as small as 2.7 nm (Jiao et al 2020;Wang et al 2018).…”

Section: Mip Laboratory Testsmentioning

confidence: 99%

“…Nevertheless, the choice of MIP as "the reference porosimetry method" is not without controversy. Although MIP has been widely used in the past to characterize consolidated water-bearing rocks (Ball et al 1990;Bloomfield et al 2001;Nabawy et al 2009;Jiao et al 2020) due to the wide range of pore sizes that can be measured and the relatively short duration of the tests, this method causes serious concerns. First, mercury is a toxic fluid, so the industry is trying to phase out MIP because of the health and safety issues.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the length scale characterized by the yield stress fluids porosimetry method for consolidated media: comparison with pore network models and mercury intrusion porosimetry

2021

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Substantial progress has been recently achieved in the development of a clean alternative to mercury intrusion porosimetry (MIP) based on single-phase flow measurements in porous samples using yield stress fluids. However, no study to date has examined the scale of the pore length actually provided by the yield stress fluids porosimetry method (YSM) in consolidated porous media. Indeed, while the results of YSM were compared to those provided by MIP in the past, the relationships between the characterized pore size distribution (PSD) and the actual pore geometry have still not been addressed for this type of porous media. This issue is of special interest to geoscientists involved in seeking relevant information from core characterization operations. With this aim in mind, the objective of the present paper is to evaluate the agreement between the PSDs characterized by YSM, the pore-opening size distributions provided by MIP tests, and the pore-throat and pore-body size distributions obtained from X-ray computed microtomography. For this purpose, a set of artificial and natural porous samples with permeability values extending over two magnitudes were characterized by using both YSM and MIP laboratory tests. Then, the results were matched to the model pore geometries extracted from digital images of the real microstructure. This analysis led to the main conclusion that YSM can be reliably used as an adequate substitute for MIP in the case of the investigated consolidated media, given the general agreement observed between these methods.

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“…There have been numerous theoretical research on the micro-and nanometer-sized pore structures of tight sandstone reservoirs [18][19][20][21][22]. Due to effects caused by compaction and diagenesis, tight sandstone reservoirs are frequently featured by broad pore-sized distributions [17,23], ranging from a few nanometers to tens of micronmeter, in addition to complex pore structures and poor pore throat connectivity [23][24][25][26]. In contrast, there are few studies of pore structure and connectivity mixed siliciclasticcarbonate tight reservoirs with complicated mineral compositions and diversified sedimentary textures.…”

Section: Introductionmentioning

confidence: 99%

Pore Structure and Connectivity of Mixed Siliciclastic-Carbonate Tight Reservoirs in the Palaeogene from Qaidam Basin, NW China

Wang

Zeng

et al. 2021

Geofluids

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The pore structure and connectivity in petroleum reservoirs are controlled in part by their petrological properties. Mixed siliciclastic-carbonate rocks have complex compositions and heterogeneous spatial distributions of the various minerals. As a result, the study of the pore structure and connectivity of mixed siliciclastic-carbonate tight reservoirs has been limited. In this study, methods such as thin section microscopy, X-ray diffraction, X-ray computed tomography, low pressure N2 adsorption, and spontaneous imbibition were adopted to comprehensively analyze the petrological properties, pore structure, and connectivity of the mixed siliciclastic-carbonate tight reservoirs in the upper member of the Xiaganchaigou Formation in the Yingxi Area, Qaidam Basin. The results showed that micrometer-sized pores in mixed siliciclastic-carbonate tight reservoirs are mainly dissolution pores, and that the spatial distribution of the pores is highly heterogeneous. The average pore radius range, average throat radius range, and average coordination number range of micronmeter-sized pores are 2.09~3.42 μm, 1.32~2.19 μm, and 0.48~1.49, respectively. Restricted by the concentrated distribution of local anhydrite, the connectivity of micronmeter-sized pores develops well only in the anhydrite, showing negligible contribution to the overall reservoir connectivity. In contrast, nanometer-sized pores in the mixed siliciclastic-carbonate tight reservoirs are mainly intercrystalline pores in dolomite. The range of nanometer-sized pores diameters is mainly distributed in 1.73-31.47 nm. The pores have a smooth surface, simple structure, and relatively homogeneous spatial distribution. The dissolution of dolomite intercrystalline pores by acidic fluids increases the connectivity of the nanometer-sized pores. This paper presents genetic models for microscopic pore structures and connectivity of mixed siliciclastic-carbonate rocks, making possible the evaluation on the quality of the mixed siliciclastic-carbonate tight reservoirs.

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Applications of mercury intrusion capillary pressure for pore structures: A review

Cited by 19 publications

References 72 publications

Revisión de técnicas microscópicas para modelos digitales de roca

Revisión de técnicas microscópicas para modelos digitales de roca

Analysis of the length scale characterized by the yield stress fluids porosimetry method for consolidated media: comparison with pore network models and mercury intrusion porosimetry

Pore Structure and Connectivity of Mixed Siliciclastic-Carbonate Tight Reservoirs in the Palaeogene from Qaidam Basin, NW China

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