... Hydraulic fracturing stimulates the flow of gas or oil in a shale play by activating or creating microcracks in a target formation. The identifications of the location and the fracturing type of these ruptures are critical information for such efforts. In this study, we show that a full waveform...

... and reservoir parameters are obtained. Presentation Date: Tuesday, September 17, 2019 Session Start Time: 1:50 PM Presentation Start Time: 3:05 PM Location: 305 Presentation Type: Oral reservoir characterization porosity microcrack tight oil rock sample skeleton attenuation characteristic...

... elastic property kerogen body maturation shale gas hydrocarbon permeability microcrack porosity maturity heavy hydrocarbon oil window Allan , A. M. , 2015 , Thermal maturation-induced evolution of the elastic and transport properties of organic-rich shales : Ph.D. thesis...

... anisotropic stress field. Basically, frictional sliding along grain boundaries and microcrack surfaces is responsible for the decreasing static modulus and increasing static Poisson's ratio for vertical shale. For horizontal sample, at low stress level, stress concentration at stiff beddings make...

... Start Time: 2:15 PM Location: 351D Presentation Type: ORAL pore space microcrack moduli attenuation seg seg international exposition navajo sandstone pore prediction dispersion squirt flow frequency upstream oil & gas biot geophysics flow model reservoir characterization...

... changing the grain contact, pore shape and microcracks. We proposed a new approach to estimate the porosity of rock samples, making use of porosimeter measurements, bulk density, and bitumen density. The new method can also provide estimation of bitumen saturation. In addition, the velocity variations...

... anisotropy is overprinted by microcracking arising from the generation and expulsion of hydrocarbons with increasing thermal maturity (Vernik, 1993; Johnston and Christensen, 1995; Dewhurst and Siggins, 2006; Allan et al., 2014a, 2014b). Finally, the mobilization of crack-filling, increasingly aromatized...

... sources: mineral orientation, layering, and microcracks. Introduction We collected a wide variety of data over multiple scales. The data range from well logs at meter scale to digital images at nanometer resolution. In between, we have ultrasonic velocity measurements at the centimeter scale, core-HD...

... in the same layers sampled by the lateral well gives estimates of the anisotropy that are too small compared to the shear-wave anisotropy measured in the lateral well. The observed anisotropy is interpreted in terms of bedding-parallel compliant discontinuities such as microcracks and low aspect ratio pores...

... fracture response of a tight gas reservoir. The variability is hypothesized to be the result of faulting in the area that alters the mechanical properties of the rock mass. Laboratory experiments demonstrate the formation of aligned microcracks throughout the deformation process. Therefore, a penny-shaped...

... and the rocks appear more uniform, so causing microcrack contribution to anisotropy to be less significant (Vanorio et al, 2008). A major rock component which may be overlooked in understanding anisotropy is mineralogy. The dominant mineralogy in shale and its compliance during pressure loading would determine...

...) describe an effective medium model to describe the compliance, Si jkl of a rock in terms of a homogenous matrix material and a random distribution of low volume, poorly bonded discontinuities, commonly referred to as microcracks or grain boundaries. The overall compliance can be considered as the sum...

... reflection coefficient pore pressure p-and s-wave velocity low effective pressure differential pressure equation ava response tiewei pressure sensitivity analysis coefficient microcrack s-wave velocity gassmann frequency dispersion dispersion reservoir characterization incidence...

... anisotropy borehole velocity increase uniaxial stress well logging microcrack shear velocity granite granite block dipole stress perpendicular monopole shear wave anisotropy transducer mpa flexural wave variation intrinsic anisotropy Effects of stress-induced anisotropy on monopole...

... Summary Elastic wave velocities in sandstones vary with stress due to the presence of discontinuities such as grain boundaries and microcracks within the rock. The effect of any discontinuities on the elastic wave velocities can be written in terms of a second-rank and fourth-rank tensor...

... ABSTRACT No preview is available for this paper. p-and s-wave velocity microcrack mobil technology company compliant pore porosity pore p-and s-wave velocity shiyu xu frequency aspect ratio pseudo clay content upstream oil & gas reservoir rock pore pressure permeability...

... dispersion prediction s-wave velocity saturation model tensor frequency microcrack Modeling the coupled effect of frequency and fluid distribution in partially-saturated gas sands Shiyu Xu, Mobil Technology Company, Dallas. Summary A new saturation model is proposed here based on the elasticity...

... ABSTRACT No preview is available for this paper. permeability open crack perpendicular wave velocity open microcrack microcrack upstream oil & gas electrical conductivity reservoir characterization shear wave splitting anisotropy porosity crack system orientation shear...

... ABSTRACT No preview is available for this paper. intergranular microcrack variation deformation anisotropy tuesday criticality zatsepin rock stuart crampin anisotropy earthquake inherent anisotropy percolation threshold shear-wave splitting reservoir characterization...

... ABSTRACT No preview is available for this paper. porosity microcrack saturation well logging reservoir characterization p-and s-wave velocity laboratory measurement clay-related pore host medium seismic anisotropy orientation distribution s-wave velocity depth interval...