The Experimental Analysis on Influencing Factors of P-Wave Velocity in Red Sandstone

Abstract:

Due to the internal structure of red sandstone is loose, the influence factors of acoustic velocity are variety, it is necessary to make a quantitatively research on the influence factors. With the aid of the ultrasonic testing for the rock, p-wave velocity of red sandstone decreased with the increase of porosity under the condition of no coupling medium, when the porosity exceeded a certain value, its internal pores and fractures had a great influence on wave velocity. When the density of red sandstone was greater than 1.82 g/cm³, wave velocity changed little, while the density was less than 1.82 g/cm³, wave velocity decreased rapidly. Under water-solid coupling condition, the change of wave velocity and porosity had no obvious regularity, part of the specimens’ wave velocity decreased a bit, while some specimens’ wave velocity were slightly higher, but the amplitude were small; Under oil-solid coupling condition, longitudinal wave velocity changed significantly, the biggest percentage of increase was 46.3%, the average was 33%.

• Periodical: Advanced Materials Research (Volumes 1030-1032)
• Pages: 1023-1028
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1030-1032.1023
• Online since: September 2014
• Authors: Jian Guo Wang*, Quan Chen Gao, Xiao Yan Wang, Jie Liu, Bin Jiang, Wei Wu
• Keywords: Experimental Analysis, Fluid-Solid Coupled, Longitudinal Wave Velocity, Porosity, Red Sandstone, Ultrasonic Testing

References

[1] Yuan-Hui L. I., Xing-Dong Zhao, You-Guo Zhao, et al. Propagation Law of Wave Velocity in Granite Sample Under Different Conditions[J]. JOURNAL OF NORTHEASTERN UNIVERSITY(NATURAL SCIENCE). 2006, 27(9): 1030-1033. (In Chinese).

[2] Gui-Ping Zheng, Xing-Dong Zhao, Jian-Po Liu, et al. Experimental Study on Change in Acoustic Wave Velocity When Rock Is Loading[J]. JOURNAL OF NORTHEASTERN UNIVERSITY(NATURAL SCIENCE). 2009, 30(8): 1197-1200. (In Chinese).

[3] Shou-Ji DU, Ming Ma, Hao-Hua Chen, et al. TESTING STUDY ON LONGITUDINAL WAVE CHARACTERISTICS OF GRANITE AFTER HIGH TEMPERATURE[J]. CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING. 2003, 22(11): 1803-1806. (In Chinese).

[4] Zhao-Ping Meng, Chang-Qing Liu, Xiao-Hei H. E., et al. Experimental Research on Acoustic Wave Velocity of Coal Measures Rocks and Its Influencing Factors[J]. JOURNAL OF MINING AND SAFETY ENGINEERING. 2008, 25(4): 389-393. (In Chinese).

[5] Zi-Jiang Wang. Research on Macroscopical Quantitative Relation Between Wave Velocity and Strength of Rock (Rock Mass)[J]. Journal of Railway Engineering Society. 2011(10): 6-9. (In Chinese).

[6] Ge SHI, Wen-lue SHEN, et al. THE RELATIONSHIP OF WAVE VELOCITIES WITH SATURATION AND FLUID DISTRIBUTION IN PORE SPACE[J]. CHINESE JOURNAL OF GEOPHYSICS. 2003, 46(1): 138-142. (In Chinese).

DOI: 10.1002/cjg2.330

[7] Hua Lu. Reasearch on Dynamic Responses and Damage Effect of Red Sandstone with Fluid-solid Coupling under Impact Loading[D]. China University of Mining & Technology(Beijing), 2013. (In Chinese).

[8] Xian-Wu Huang, Ping Tang, Xie-Xing Miao, et al. Testing study on seepage properties of broken sandstone[J]. ROCK AND SOIL MECHANICS. 2005, 26(9): 1385-1388. (In Chinese).

[9] Ge Shi, Dongquan Yang. The Regression Analysis Study on Velocity and Porisity, and Clay Content of Rocks[J]. ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS PEKINENSIS. 2001, 37(3): 379-384. (In Chinese).

[10] Yang Hai, Peimin Zhu, Fanping Zeng. Relationship Between Marine Depositional System and the Acoustic Velocity and the Density at Bachu Outcrop Area[J]. CHINESE JOURNAL OF ENGINEERING GEOPHYSICS. 2010, 7(1): 33-42. (In Chinese).

[11] He-Hua Zhu, Zhi-Guo Zhou, Tao Deng. ACOUSTIC PARAMETERS OF LOW-POROSITY ROCK UNDER DRY AND SATURATED CONDITIONS[J]. CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING. 2005, 24(5): 823-828. (In Chinese).

[12] Ruiwen Liu, Chunshan Li, Jiaqiang Guan. The Impact of Pore Fluid Types on Formations Acoustic Velocity[J]. PETROLEUM DRILLING TECHNIQUES. 2007, 35(4): 32-34. (In Chinese).

[13] Chao Cheng, Shu-Dong Zhang, Min Pan. The Acoustical Characteristic Research Based on the Physical Property Change of the Sandstone[J]. NATURAL GAS INDUSTRY. 2007, 27(9): 40-43. (In Chinese).

[14] Xu Chen, Jin Y. U., Hong L. I., et al. Experimental study of propagation characteristics of acoustic wave in rocks with different lithologies and water contents[J]. Rock and Soil Mechanics. 2013(9): 2527-2533. (In Chinese).