A New Method of Preparing Artificial Cores with Certain Cracks for Experiment Study of Elastic Wave Propagation

Abstract:

Crack universally existing underground is an important kind of pores. In order to study the elastic wave propagation in fractured medium through experiment, a new method to make artificial core with certain cracks using oil well cement and camphor sheet or thin steel sheet is put forward. Geometric parameters of the crack, such as shape, size and aspect ratio, are approximately equal to that of camphor sheet or thin steel sheet. Using the thin steel sheet to make crack can be more easy and accurate to control the crack angle than using camphor sheet. The crack opening scales at millimeters. The aspect ratio of cracks formed by camphor sheet ranges from 1.4 to 8, and aspect ratio of cracks formed by thin steel sheet ranges from 2.5 to 70. This method is proved simple and feasible by experiment practice, which can provide artificial cores with certain crack for acoustic wave propagation study.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 2954-2957
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.2954
• Online since: October 2011
• Authors: Zi Zhen Wang, Ri He Wang, Yu Huan Bu, Xun Shan
• Keywords: Artificial Core, Aspect Ratio, Camphor, Crack, Crack Angle, Oil Well Cement, Thin Steel Sheet

References

[1] Assefa, S., C. Mccann, and J. Sothcoot: Geophysical Prospecting Vol. 51 (2003), p.1

[2] Eberli, G.P., G.T. Baechle, and F.S. Anselmetti: The Leading Edge Vol. 22 (2003), p.654

[3] Wang, Z: Geophysics Vol.66 (2001), p.410

[4] Wyllie, M.R.J., A.R. Gregory, and L.W. Gardner: Geophysics Vol.21 (1958), p.491

[5] Cao Jun, He Zhenhua, Huang Deji: Progress in Exploration Geophysics Vol.26 (2) (2003), p.88. (In Chinese)

[6] Hao Shouling, Zhao Qun: Progress in Exploration Geophysics Vol.27 (3) (2004), p.190. (In Chinese)