... The acoustic-electrical (AE) response of subsurface hydrocarbon reservoirs is highly affected by rock heterogeneity. In particular the characterization of the microstructure of tight (low-permeability) rocks can be aided by a joint interpretation of AE data. To this purpose, we evaluate cores...

... the micro-amplitude structure. reservoir characterization accuracy sample point interpretation seismic data volume upstream oil & gas correspond horizon interpretation radian value line correspond zero-crossing point seismic profile exploration geophysicist 10 diagram microstructure...

...Exploring the link between strength properties and microstructure in carbonates Irina Berezina*, The Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences; Andrey Patonin, Borok Geophysical Observatory, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences...

... fraction modeling porosity cementation evolution structural geology smectite geologic time mineral composition microstructure compaction evolutionary rock physics seg international exposition upstream oil & gas reservoir geomechanics reservoir characterization mudrock pressure modeling...

... ABSTRACT We present a new method for estimating the microstructures of complex porous media like limestones from broadband velocity and attenuation data. The method involves a misfit function that measures the L1-norm difference between the measured and predicted velocity and attenuation...

... ABSTRACT Understanding elastic properties of rocks is a scientific challenge due to the complexity of their microstructures. This study combines the numerical tools to generate models for internal geometry of pores with the 3D printing technology in order to control the shape and size of pores...

... different microstructure than healthy tissue these nonlinear parameters may provide a diagnostic benefit if the parameters can be quantified and validated. In our work on sandstone samples we were able to probe, magnify, and quantify extremely subtle nonlinear behavior in rocks, which are dominated...

... model constructing at each scale based on rock microstructure analysis and elastic wave velocity measurements at the respective scale. In the upscaling we are goiging from smaller to larger scales incorporating all specific features of rock inherent at previous scales including anisotropy. This approach...

... allowed to obtain information on the distribution of elastic properties, the microstructure of pore space, and to calculate the Thomsen anisotropy parameters of the studied sediments. Based on the results obtained a petrophysical substantiation of the perspective intervals delineation using a cross-plot...

... of these models are phenomenological, i.e. are not directly related to rock microstructure. This fact may be an issue for both theoretical and practical applications since we can’t define limits of applicability of a given stress-dependence equation, in addition we are not able to relate observed seismic...

... decomposition under ambient conditions, a lot of open questions are left concerning the formation, microstructure and distribution of hydrates in sediments. Three-dimensional (3D) information of microstructures is important for a better understanding of hydrate formation and its distribution within host...

... reservoir microstructural facies microstructure sample carb-a complex reservoir micrite microporous micrite broad distribution Summary In this study, we used nanoindentation technique to map Young’s modulus of microporous limestones at the microscale (map of 300*300 µm 2 , with a step...

... Summary Microstructural and textural measurements from two Ordovician shale units (Goldwyer and Bongabinni formations) within the Palaeozoic–Mesozoic Canning Basin indicate that the former unit was affected by mechanical compaction and clay mineral transformation whereas the latter preserves...

... Summary Geopressure (or overpressure) presents significant risks to drilling if not predicted accurately. To better understand mechanisms of abnormal fluid pressure, I choose an inclusion-based micromechanical model by using the concept of eigenstrain and characterize the microstructure...

... the microstructural changes caused by this dry pyrolysis. Comparison of the registered micro-CT images of Mancos shale samples subjected to temperatures up to 470°C shows significant shrinkage of the kerogen that fills pore spaces resulted from bitumen expulsion into the pores. Introduction Oil, gas condensate...

... Summary The main purpose of this study is to establish the cause-and-effect relationships between geochemical parameters and microstructure/rock physics as organic-rich shales mature. In order to avoid auxiliary effects, e.g., mineralogical variations, we study the evolution of three pairs...

... Evolution of mineral fabrics and microstructures in Kimmeridge Shale upon kerogen maturation Waruntorn Kanitpanyacharoen* and Tiziana Vanorio, Department of Geophysics, Stanford University; Yijin Liu, Stanford Synchrotron Radiation Laboratory; Chris Benmore and Xianghui Xiao, Advanced Photon...

... Summary In this study, we investigate the effect of micrite content on the acoustic properties of well-controlled microstructures created in carbonate analogs. In particular, we examine the effect of micrite on acoustic velocities, sensitivity of velocity to pressure, and their response...

... Summary The effectiveness of fracture stimulation techniques depends on the microstructural features which control the rock strength. We analyze brittleness index, fractures, and microstructure of the Barnett Shale for a better understanding of the correlation between mechanical properties...

... image fluid dynamics pore space upstream oil & gas reservoir characterization precipitation computer simulation geometry laboratory measurement microstructure sphere pack mineral precipitation injection salt precipitation vanorio computing rock physics trend flow in porous media...