Preliminary experiments towards understanding the influence of fractures on the anisotropy of electrical conductivity

Mohammed, Tariq; Schmitt, Douglas R.

doi:10.1016/j.jappgeo.2020.104197

Cited by 1 publication

(3 citation statements)

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“…The pulverized material has a grain density of 2.79 g/cm 3 . Two-component epoxy (low-viscosity resin and curing agent) was used in a 2:1 ratio (resin/curing agent) as a binder for rock solid matrix as observed in other works [14,15,19,33,34]. The binder was chosen because it presents high mechanical strength and chemical resistance, low shrinkage, good adhesion, stability to thermal cycles and impacts, good fluidity and does not release by-products in its use, desirable properties when preparing synthetic rocks.…”

Section: Methodsmentioning

confidence: 99%

“…The synthetic rocks were produced using a compaction process, widely reported in the literature for sample consolidation [12][13][14][17][18][19]33,34], applying vertical compressive stress to the mixture of limestone powder and epoxy resin that was placed in a cylindrical metal mold composed of base, collar and body (Figure 2a) with dimensions of 3.80 cm (diameter) and 7.60 cm (height). Two-component epoxy (low-viscosity resin and curing agent) was used in a 2:1 ratio (resin/curing agent) as a binder for rock solid matrix as observed in other works [14,15,19,33,34]. The binder was chosen because it presents high mechanical strength and chemical resistance, low shrinkage, good adhesion, stability to thermal cycles and impacts, good fluidity and does not release by-products in its use, desirable properties when preparing synthetic rocks.…”

Section: Synthetic Rock Production Protocolmentioning

confidence: 99%

“…The synthetic rocks were produced using a compaction process, widely reported in the literature for sample consolidation [12][13][14][17][18][19]33,34], applying vertical compressive stress to the mixture of limestone powder and epoxy resin that was placed in a cylindrical metal mold composed of base, collar and body (Figure 2a) with dimensions of 3.80 cm (diameter) and 7.60 cm (height). The amounts of limestone powder and epoxy resin used were varied to adjust and establish a density value that would make it possible to produce samples with the height of the mold dimensions and a consolidated aspect, without surface voids and irregularities along its length, with mechanical strength and petrophysical properties compatible with natural carbonate rocks; after tests, a proportion of 90% limestone powder and 10% epoxy was established for core production.…”

Section: Synthetic Rock Production Protocolmentioning

confidence: 99%

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Production of Synthetic Carbonate Rocks Using Limestone Mining Waste: Mineralogical, Petrophysical and Geomechanical Characterization

dos Santos,

Gomes,

Lima

et al. 2024

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Carbonate rocks are important for the petroleum industry, as they contribute significantly to hydrocarbon reserves, although their analysis is complex due to the high cost of core sampling and their high heterogeneity; for this, synthetic rocks aim to provide relatively homogeneous samples with analogous characteristics to natural rocks. In this research, synthetic carbonate rocks were produced by mixing a fixed ratio between limestone powder, obtained from limestone mining waste, and epoxy resin as a cementing material, using compaction energy for consolidation. The work aimed to produce homogeneous samples with high strength, reproducing the intergranular pore system for future applications in rock–fluid interaction analysis. The characteristics and structure of the samples were investigated through X-ray computed microtomography, petrographic images, petrophysical, chemical and geomechanical tests. Results showed a direct increasing relationship between porosity and permeability and a tendency for mechanical strength (UCS) to decrease with increasing porosity. When compared with the natural carbonate rocks, these presented similarities in their mechanical properties and petrophysical measurements, showing that the methodology can be considered as an alternative for the obtention of a realistic material that can be used for future experiments regarding rock mechanics and rock–fluid interaction for prediction of carbonate rocks’ behavior.

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Section: Methodsmentioning

confidence: 99%

Section: Synthetic Rock Production Protocolmentioning

confidence: 99%

“…The synthetic rocks were produced using a compaction process, widely reported in the literature for sample consolidation [12][13][14][17][18][19]33,34], applying vertical compressive stress to the mixture of limestone powder and epoxy resin that was placed in a cylindrical metal mold composed of base, collar and body (Figure 2a) with dimensions of 3.80 cm (diameter) and 7.60 cm (height). The amounts of limestone powder and epoxy resin used were varied to adjust and establish a density value that would make it possible to produce samples with the height of the mold dimensions and a consolidated aspect, without surface voids and irregularities along its length, with mechanical strength and petrophysical properties compatible with natural carbonate rocks; after tests, a proportion of 90% limestone powder and 10% epoxy was established for core production.…”

Section: Synthetic Rock Production Protocolmentioning

confidence: 99%

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