Improvement of Quantitative Evaluation of Rock Brittleness Based on Stress-Strain Curve

Dongfeng JIANG, Tingting WANG, Wanchun ZHAO, Yanqiu CHEN, Yunpeng MA

Abstract


Accurate assessment of brittle of rock is the key to the transformation of oil and gas reservoirs. In view of this, Therefore, through literature research, summarized more than 30 kinds of  brittleness index, and analysis the limitations of the brittleness evaluation index. A new brittle evaluation index, based on the stress characteristics of the stress-strain curve, and considering the two kinds of rock breaking behavior, is proposed. And carry out uniaxial compression test to verify the evaluation index of brittleness. The test results show that the new brittle index can evaluate the two kinds of rock brittleness, which is more general and reliable than other indexes. The results have important significance to enrich and improve the existing evaluation methods of rock brittleness.

Keywords


Rock mechanics; Brittleness index; Stress-strain curve

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References


[1] Morley, A. (1944). Strength of materials (pp.71-72). London: Longman Green.

[2] Heteny, M. (1966). Handbook of experimental stress analysis (pp.23-25). New York: John Wiley.

[3] Ramsay, J. G. (1967). Folding and fracturing of rocks (pp.44-47). London: McGraw-Hill.

[4] Obert, L., & Duvall, W. I. (1967). Rock mechanics and the design of structures in rock (pp.78-82). New York: John Wiley.

[5] Honda, H., & Sanada, Y. (1956). Hardness of coal. Fuel, 35, 451.

[6] Protodyakonov, M. M. (1963). Mechanical properties and drill ability of rocks. Paper presented at Proceedings of the 5th Symposium on Rock Mechanics, Twin Cities, USA.

[7] Bishop, A. W. (1967). Progressive failure with special reference to the mechanism causing it. Paper presented at Proceedings of the Geotechnical Conference, Oslo, Norway.

[8] Hucka, V., & DAS, B. (1974). Brittleness determination of rocks by different methods. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 11(10), 389-392.

[9] Lawn, B. R., & Marshall, D. B. (1979). Hardness, toughness and brittleness: An indentation analysis. Journal of American Ceramic Society, 62(7/8), 347-350.

[10] Bazant, Z. P., & Kazemi, M. T. (1990). Determination of fracture energy, process zone length and brittleness number from size effect, with application to rock and concrete. International Journal of Fracture, 44, 111-131.

[11] Quinn, J. B., & Quinn, G. D. (1997). Indentation brittleness of ceramics: A fresh approach. Journal of Materials Science, 32(16), 4331-4346.

[12] Altindag, R. (2003). The correlation of specific energy with rock brittleness concept on rock cutting. Journal of the South African Institute of Mining and Metallurgy, 103(3), 163-171.

[13] Hajiabdolmajida, V., Kaiser, P. K., & Martin, C. D. (2002). Modeling brittle failure of rock. International Journal of Rock Mechanics and Mining Sciences, 39(6), 731-741.

[14] Copur, H., Bilgin, N., & Tuncdemir, H. (2003). A set of indices based on indentation test for assessment of rock cutting performance and rock properties. Journal of the South African Institute of Mining and Metallurgy, 103(9), 589-600.

[15] Ajiabdolmajid, V., & Kaiser, P. (2003). Brittleness of rock and stability assessment in hard rock tunneling. Tunnelling and Underground Space Technology, 18(1), 35-48.

[16] Rickman, R., Mullen, M., & Petre, E. (2008, September). A practical use of shale petrophysics for stimulation design optimization: All shale plays are not clones of the Barnett shale. Paper presented at SPE Annual Technical Conference and Exhibition, Denver, Colorado, USA.

[17] Stavrogin, A. N., & Tarasov, B. G. (2001). Experimental physics and rock mechanics (pp.1342-1357). New York: Taylor and Francis Group.

[18] Li, Q. H., Chen, M., Jin, Y., Wang, F. P., Hou, B., & Zhang, B. W. (2012). Indoor evaluation method for shale brittleness and improvement. Chinese Journal of Rock Mechanics and Engineering, 31(8), 1680-1685.

[19] Zhou, H., Meng, F. L., Zhang, C. Q., Xu, R. C., & Lu, J. J. (2014). Quantitative evaluation of rock brittleness based on stress-strain curve. Chinese Journal of Rock Mechanics and Engineering, 6, 1114-1122.




DOI: http://dx.doi.org/10.3968/8237

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