Application Of Complex Variables Boundary Element Method To Modeling Borehole Stresses In Anisotropic Stress Field In Non-linear Rocks
Price
Free (open access)
Transaction
Volume
23
Pages
11
Published
1999
Size
902 kb
Paper DOI
10.2495/BT990141
Copyright
WIT Press
Author(s)
S.G. Mogilevskaya, P.A. Nawrocki and M.B. Dusseault
Abstract
Application of complex variables boundary element method to modeling borehole stresses in anisotropic stress field in non-linear rocks S. G. Mogilevskaya, P. A. Nawrocki and M. B. Dusseault Department of Earth Sciences, University of Waterloo, Waterloo, Ontario Email: sofia@panda.uwaterloo.ca Abstract A new approach is presented to model borehole stresses in anisotropic stress fields in non-linear rocks. The numerical approach combines a rapid al- gorithm based on the new complex hypersingular equation for piece-wise homogeneous media with a circular opening. Also, a special technique of obtaining input data from a series of triaxial compression tests is introduced. 1 Introduction Modelling borehole stresses is important for the petroleum industry because of practical problems such as borehole instability assessment, mud weight choice, casing design, and sand production prediction. There is now general agreement that linear elasticity analyses invariably underpredict openin
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