Abstract Because of their extreme heterogeneity at multiple scales, carbonate rocks present a great challenge for studying and managing oil reservoirs. Depositional processes diagenetic alterations carbonates may have produced very complex pore structures and, consequently, variable fluid storage flow properties hydrocarbon To understand the impact mineralogy on system, we analyzed four rock sa...

Stibioclaudetite is a new mineral species with ideal chemistry AsSbO3. The symmetry is monoclinic, P21/n, with a 5 4.5757(4) Å, b 5 13.1288(13) Å, c 5 5.4216(5) Å, β 5 95.039(4)°, V 5 324.44(5) Å, Z 5 4, and dcalc 5 5.009 g/cm. The strongest X-ray lines (calculated) are 3.512 (100), 3.282 (82), 3.238 (71), 2.279 (34), and 4.995 (32). The average of ten microprobe analyses is 45.15% As2O3 and 55...

We develop a finite element discretization and multigrid solver for a Darcy-Stokes system of three dimensional vuggy porous media, i.e., porous media with cavities. The finite element method uses low order mixed finite elements in the Darcy and Stokes domains, and special transition elements near the Darcy-Stokes interface to allow for tangential discontinuities implied by the Beavers-Joseph bo...

Abstract We report the finding of rare eclogite-facies vugs forming millimeter- to centimeter-sized pockets in meta-ophiolites from western European Alps. Euhedral garnet crystals covering vug walls display oscillatory chemical zoning for a wide range major and trace elements, including Cr, Mn, earth elements. Thermodynamic modeling revealed that closed-system fluid production through breakdown...

During the sedimentary period of Ordovician Yingshan Formation, carbonate platform Gucheng area in Tarim basin was characterized by a distally steepened ramp. Relative sea-level changes exerted strong influence on shoal facie dolomite reservoirs 3rd Member Formation (the Ying 3 member), sedimented context shallow water environment However, previous studies that lacked high-frequency prevent fur...

Acidization is a widely used stimulation technique for carbonate reservoirs aimed at removing formation damage, and if successful, can result in the creation of wormholes specific lengths conductivities around wellbore. The depends on injection rate particular acid-mineral system be predicted through numerical simulations reactive phenomenon during acidization. In this paper, commonly two-scale...

The carbonate reservoir plays a pivotal role in conventional oil and gas reservoirs. However, due to limited knowledge of fluid flow characteristics fractured-vuggy formations (vuggy means small medium-sized cavity inside rock), high efficiency development remains challenging. In this study, the similarity principle is utilized design two-dimensional visual model based on geological data inject...

Determination of porosity, permeability, and pore volume compressibility of reservoir rocks and those variations with effective stress changes are of great interest in petroleum engineering. This paper has studied the influence of pore types of carbonate reservoir rocks on pore volume compressibility as well as Klinkenberg permeability and porosity at different stress values. In the current stu...

Quantitative prediction of petrophysical properties for reservoir rocks frequently employs representative microscopic models of the pore space as input. Recently digital imaging techniques such as microtomography have been used to provide void space images at the resolution of a few microns. However, this resolution may be insufficient to capture some smaller structures, particularly in carbona...