INVESTIGATIONS OF THE RELATIONS BEmEN RESIDUAL STRAINS, FABRIC, FRACTURE AND ULTRASONIC ATTENUATION AND VELOCITY IN ROCKS
ثبت نشده
چکیده
منابع مشابه
Compressional velocity, seismic attenuation and permeability relationships for sandstones from WOSPP
Some experimental results measuring P-wave phase velocity and seismic attenuation in laboratory under dry and water-saturated conditions at ultrasonic frequencies and atmospheric pressure on sandstone samples of the Milk River Formation in the Writingon-Stone Provincial Park (WOSPP), southern Alberta, are presented and are correlated with petrophysical data obtained from these samples as clay c...
متن کاملParameter Estimation in Ultrasonic Measurements on Trabecular Bone
Ultrasonic tissue characterization has shown promise for clinical diagnosis of diseased bone (e.g., osteoporosis) by establishing correlations between bone ultrasonic characteristics and the state of disease. Porous (trabecular) bone supports propagation of two compressional modes, a fast wave and a slow wave, each of which is characterized by an approximately linear-withfrequency attenuation c...
متن کاملSensitivity Analysis of Seismic Velocity and Attenuation Variations for Longmaxi Shale during Hydraulic Fracturing Testing in Laboratory
During the hydraulic fracturing procedure in shale-gas exploitation, the poroelastic properties of shale formation can be altered significantly. However, it is difficult to evaluate these variations using microseismic field data. In this study, we conduct a hydro-fracturing experiment using Longmaxi shale, which is a major formation for shale-gas production in China, to simulate the water injec...
متن کاملStoneley Wave Propagation in a Fluid-filled Borehole with a Vertical Fracture
The propagation of Stoneley waves in a fluid-filled borehole with a vertical fracture is investigated both theoretically and experimentally. The borehole propagation excites fluid motion in the fracture and the resulting fluid flow at the fracture opening perturbs the fluid-solid interface boundary condition at the borehole wall. By developing a boundary condition perturbation technique for the...
متن کاملGains from diversification on convex combinations: A majorization and stochastic dominance approach
By incorporating both majorization theory and stochastic dominance theory, this paper presents a general theory and a unifying framework for determining the diversification preferences of risk-averse investors and conditions under which they would unanimously judge a particular asset to be superior. In particular, we develop a theory for comparing the preferences of different convex combination...
متن کامل