Solution of coupled acoustic-elastic wave propagation problems with anelastic attenuation using automatic hp-adaptivity

详细信息    查看全文

• 作者：P.J. Matuszyk^a ; ^b ; ^{pawel@ices.utexas.edu} ; ^{pjm@agh.edu.pl} ; L.F. Demkowicz^c ; C. Torres-Verdin^a
• 关键词：Borehole acoustic logging ; Wave propagation ; Linear elasticity ; Coupled problems ; Hp-adaptive finite elements ; PML
• 刊名：Computer Methods in Applied Mechanics and Engineering
• 出版年：2012
• 出版时间：1 March, 2012
• 年：2012
• 卷：213-216
• 期：Complete
• 页码：299-313
• 全文大小：1889 K

文摘

The paper presents a frequency-domain hp-adaptive finite element (FE) method for a class of coupled (visco-)acoustics/anelasticity problems with application to modeling of sonic tools in the borehole environment. The paper extends methodology, software, and results presented in . A new FE code enables solution a wider class of problems, including modeling of logging-while-drilling (LWD) tools, viscous damping in fluids and solids, well- and poor-bonded cased boreholes, and more complicated axially-symmetrical geometries of the formation. Solutions of non-trivial examples involving modeling of fast and slow formations, a formation with a soft layer, and an LWD tool, are presented. Results of the hp-FE simulations are post-processed to obtain time-domain solutions.