New integrated 2D–3D physical method to evaluate the porosity and microstructure of carbonate and dolomite porous system

Galaup, S.; Liu, Ya; Cérepi, Adrian

doi:10.1016/j.micromeso.2011.12.021

Cited by 13 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…; Galaup et al . ), resulting in possible pore throat entry diameters at 316 MPa, between 3.3 and 4.7 nm, a relatively small variation (see whiskers in Fig. B).…”

Section: Discussionmentioning

confidence: 99%

The connectivity of pore space in mudstones: insights from high‐pressure Wood's metal injection, BIB‐SEM imaging, and mercury intrusion porosimetry

et al. 2015

View full text Add to dashboard Cite

Study of the pore space in mudstones by mercury intrusion porosimetry is a common but indirect technique and it is not clear which part of the pore space is actually filled with mercury. We studied samples from the Opalinus Clay, Boom Clay, Haynesville Shale, and Bossier Shale Formations using Wood's metal injection at 316 MPa, followed by novel ion beam polishing and high-resolution scanning electron microscopy. This method allowed us to analyze at high resolution which parts of a rock are intruded by the liquid alloy at mm to cm scale. Results from the Opalinus Clay and Haynesville Shale show Wood's Metal in cracks, but the majority of the pore space is not filled although mercury intrusion data suggests that this is the case. In the silt-rich Boom Clay sample, the majority of the pore space was filled Wood's metal, with unfilled islands of smaller pores. Bossier Shale shows heterogeneous impregnation with local filling of pores as small as 10 nm. We infer that mercury intrusion data from these samples is partly due to crack filling and compression of the sample. This compaction is caused by effective stress developed by mercury pressure and capillary resistance; it can close small pore throats, prevent injection of the liquid metal, and indicate an apparent porosity. Our results suggest that many published MIP data on mudstones could contain serious artifacts and reliable metal intrusion porosimetry requires a demonstration that the metal has entered the pores, for example by Wood's metal injection, broad ion beam polishing, and scanning electron microscopy.

show abstract

“…; Galaup et al . ), resulting in possible pore throat entry diameters at 316 MPa, between 3.3 and 4.7 nm, a relatively small variation (see whiskers in Fig. B).…”

Section: Discussionmentioning

confidence: 99%

The connectivity of pore space in mudstones: insights from high‐pressure Wood's metal injection, BIB‐SEM imaging, and mercury intrusion porosimetry

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Among these methods, stereology is a time consuming method which consists in deducing pore characteristics from imaging thin porous medium slices (Riche et al 2012;Okabe and Blunt 2005;Galaup et al 2012). Treatment and correlation of many successive images is needed to provide statistically representative shapes and sizes of the pore space.…”

Section: Introductionmentioning

confidence: 99%

Toward a New Method of Porosimetry: Principles and Experiments

et al. 2014

View full text Add to dashboard Cite

Current experimental methods used to determine pore size distributions (PSD) of porous media present several drawbacks such as toxicity of the employed fluids (e.g., mercury porosimetry). The theoretical basis of a new method to obtain the PSD by injecting yield stress fluids through porous media and measuring the flow rate Q at several pressure gradients ∇ P was proposed in the literature. On the basis of these theoretical considerations, an intuitive approach to obtain PSD from Q(∇ P) is presented in this work. It relies on considering the extra increment of Q when ∇ P is increased, as a consequence of the pores of smaller radius newly incorporated to the flow. This procedure is first tested and validated on numerically generated experiments. Then, it is applied to exploit data coming from laboratory experiments and the obtained PSD show good agreement with the PSD deduced from mercury porosimetry.

show abstract

“…A number of experimental techniques exist for microstructural characterization of carbonates [12,[21][22][23][24][25][26][27][28][29][30][31]. These include thin-section analysis [23], Scanning Electron Microscopy (SEM) [23,24], focused ion beam-SEM [25], and mercury intrusion porosimetry [12,21,26,27].…”

Section: Introductionmentioning

confidence: 99%

“…These include thin-section analysis [23], Scanning Electron Microscopy (SEM) [23,24], focused ion beam-SEM [25], and mercury intrusion porosimetry [12,21,26,27]. However, these techniques are destructive, so downstream or repeat measurements are impossible.…”

Section: Introductionmentioning

confidence: 99%

Pore Structure Characterization of Indiana Limestone and Pink Dolomite from Pore Network Reconstructions

Freire-Gormaly

Ellis

MacLean

et al. 2015

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

View full text Add to dashboard Cite

-Carbon sequestration in deep underground saline aquifers holds significant promise for reducing atmospheric carbon dioxide emissions (CO 2 ). However, challenges remain in predicting the long term migration of injected CO 2 . Addressing these challenges requires an understanding of pore-scale transport of CO 2 within existing brine-filled geological reservoirs. Studies on the transport of fluids through geological porous media have predominantly focused on oil-bearing formations such as sandstone. However, few studies have considered pore-scale transport within limestone and other carbonate formations, which are found in potential storage sites. In this work, high-resolution micro-Computed Tomography (microCT) was used to obtain pore-scale structural information of two model carbonates: Indiana Limestone and Pink Dolomite. A modified watershed algorithm was applied to extract pore network from the reconstructed microCT volumetric images of rock samples and compile a list of pore-scale characteristics from the extracted networks. These include statistical distributions of pore size and radius, pore-pore separation, throat radius, and network coordination. Finally, invasion percolation algorithms were applied to determine saturation-pressure curves for the rock samples. The statistical distributions were comparable to literature values for the Indiana Limestone. This served as validation for the network extraction approach for Pink Dolomite, which has not been considered previously. Based on the connectivity and the pore-pore separation, formations such as Pink Dolomite may present suitable storage sites for carbon storage. The pore structural distributions and saturation curves obtained in this study can be used to inform core-and reservoir-scale modeling and experimental studies of sequestration feasibility.Résumé -Caractérisation de la structure de pore de l'Indiana limestone de calcaire et de Pink dolomite provenant des reconstitutions de réseaux de pores -La séquestration du carbone dans les aquifères salins profonds souterrains est très prometteuse pour la réduction des émissions de dioxyde de carbone (CO 2 ) dans l'atmosphère. Cependant, des problèmes demeurent dans la prédiction de la migration à long terme du CO 2 injecté. Relever ces défis nécessite une compréhension du transport de CO 2 à l'échelle du pore dans des réservoirs géologiques existants remplis de saumure. Les études sur le transport des fluides en milieu poreux géologique ont principalement porté sur les formations oléagineuses telles que le grès. Cependant, peu d'études ont

show abstract

New integrated 2D–3D physical method to evaluate the porosity and microstructure of carbonate and dolomite porous system

Cited by 13 publications

References 25 publications

The connectivity of pore space in mudstones: insights from high‐pressure Wood's metal injection, BIB‐SEM imaging, and mercury intrusion porosimetry

The connectivity of pore space in mudstones: insights from high‐pressure Wood's metal injection, BIB‐SEM imaging, and mercury intrusion porosimetry

Toward a New Method of Porosimetry: Principles and Experiments

Pore Structure Characterization of Indiana Limestone and Pink Dolomite from Pore Network Reconstructions

Contact Info

Product

Resources

About