Browsing ERL Industry Consortia Technical Reports by Author "Cheng, Ningya"
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Borehole Wave Propagation In Isotropic And Anisotropic Media I: Finite Difference Method
Cheng, Ningya; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)In this paper we developed a 3-D finite difference method to simulate wave propagations in an isotropic medium. The wave equation is formulated into the first-order hyperbolic equations by using velocity and stress and ... -
Borehole Wave Propagation In Isotropic And Anisotropic Media II: Isotropic Formation
Cheng, Ningya; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)In this paper we apply the 3-D finite difference method to simulate borehole wave propagations in an isotropic formation. The scheme is tested in a fluid-filled borehole surrounded by the homogeneous elastic formation. ... -
Borehole Wave Propagation In Isotropic And Anisotropic Media III: Anisotropic Formation
Cheng, Ningya; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)In this paper we extend the 3-D finite difference method to simulate wave propagations in an anisotropic medium. The scheme is tested in the homogeneous medium. The finite difference results agree excellently with the ...