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Title: Poroelastic modeling of seismic boundary conditions across afracture

Conference ·
OSTI ID:920346

A fracture within a porous background is modeled as a thin porous layer with increased compliance and finite permeability. For small layer thickness, a set of boundary conditions can be derived that relate particle velocity and stress across a fracture, induced by incident poroelastic waves. These boundary conditions are given via phenomenological parameters that can be used to examine and characterize the seismic response of a fracture. One of these parameters, here it is called membrane permeability, is shown through several examples to control the scattering amplitude of the slow P waves for very low-permeability fractures, which in turn controls the intrinsic attenuation of the waves.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Director. Office of Science. Basic EnergySciences
DOE Contract Number:
DE-AC02-05CH11231
OSTI ID:
920346
Report Number(s):
LBNL-60862; R&D Project: 468106; BnR: KC0303010; TRN: US200818%%1148
Resource Relation:
Conference: Meeting of the Society Exploration Geophysicists,New Orleans, LA, 1-6 October 2006
Country of Publication:
United States
Language:
English

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