... vugs (e.g., vuggy limestone) affect rock elastic properties. Such macroporosity leads to challenges in deriving engineering properties of rock. This paper compiles an existing database for porosity and Young’s modulus of macroporous rocks. The database includes Young’s modulus determined from...

... was 0.41~496.59 ms. Guanidine fracturing fluid mainly damaged the macropores (>10 ms) while the slippery water fracturing fluid mainly damaged the mesopores (1.00~10.00 ms). To reduce the formation damage, the best mass fraction for the guar gum and slippery water fracturing fluids were obtained at 0.2...

...1. INTRODUCTION It is well established that the presence of pores of any size, either micropores or macropores, within a rock specimen will have a negative effect on both strength and stiffness. Within microporous rock, the pore space is assumed to be evenly distributed throughout the rock specimen...

...1. INTRODUCTION The presence of vesicles within basalt has a negative impact on the unconfined compressive strength (UCS) of the basalt. Vesicles are macropores within the basalt matrix. Vesicles are spherical or cylindrical cavities left by gas bubbles within solidifying magma [1]. Qualitatively...

... Artificial Intelligence dimensional cross section velocity contrast raypath inversion Upstream Oil & Gas inverted velocity model sensor internal macropore Reservoir Characterization csat characterization velocity model travel time cross-specimen acoustic tomography specimen...

...1. INTRODUCTION Understanding the effect of macropores on the engineering behavior of rock is important to practical engineering applications. Macroporosity has been shown to influence strength and stiffness of rock as demonstrated in previous studies (for example Avar et al., 2003, Gates, 2008, Al...

... with increasing porosity. This is reflected by the use of a variety of continuum models in rock mechanics. With macroporous (voids visible with the unaided eye) rock materials, this model is not valid. The relative sizes of the macropores compared to the specimen and their typically non-homogeneous distribution...

... roughness sixty-eight shale sample structural geology pore diameter Reservoir Characterization dimension shale Upstream Oil & Gas pore-air compression Jar Slake Test fractal dimension macropore koch triadic island pore wall roughness pore diameter compression perimeter pore boundary...