Problem of Acoustic Diagnostics of a Damaged Zone

被引：6
|
作者：
Petrov, I. B. [1 ,2 ]
Golubev, V. I. [1 ,2 ]
Shevchenko, A. V. [1 ]
机构：
[1] Natl Res Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141701, Moscow Oblast, Russia
[2] Russian Acad Sci, Sci Res Inst Syst Anal, Moscow 117218, Russia
来源：
DOKLADY MATHEMATICS | 2020年 / 101卷 / 03期
关键词：
mathematical modeling; grid-characteristic method; seismic survey process; porous media; Dorovsky model; damaged zone; fractured medium; STONELEY WAVES; FINITE-DIFFERENCE; PROPAGATION; MEDIA;
D O I：
10.1134/S1064562420020180
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
The problem of seismic wave propagation from a source located in a well is considered. Acoustic equations are used to describe the dynamic behavior of the fluid. The damaged zone is described as a porous fluid-saturated medium by applying the Dorovsky model. The elastic approximation is used to describe the dynamic behavior of the surrounding rock. A unified algorithm based on the grid-characteristic approach with curvilinear grids is proposed for full-wave modeling in the entire computational domain. Its distinctive feature is that the necessary contact conditions on the boundary between media with different rheological properties are stated explicitly. The possibility of acoustic diagnostics of the heterogeneity of the damaged zone is numerically explored.
引用
收藏
页码：250 / 253
页数：4
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