Abstract
To truly reflect changes in apparent resistivity before and after hydraulic fracturing (HF) of coal and rock masses in underground spaces, the fracturing effect should be investigated and evaluated. In this paper, experiments were conducted on true triaxial HF in rocks to investigate the apparent resistivity response law. The results show that the change in apparent resistivity was regular and uneven in the process of HF. The combined action of hydraulic cracks and fracturing water were the decisive factor in the apparent resistivity change. According to the time-sequence characteristics of apparent resistivity, the crack initiation sequence and spatial location can be reflected intuitively. The abrupt change and abnormal fluctuation in apparent resistivity near the cracks are important for crack initiation and propagation. Due to the difference in hydraulic crack shape and scope, the influence of cracks and fracturing water differs on different directions of rock. Therefore, the variation trend of apparent resistivity was different along various survey lines. After three-dimensional stress unloading, the water content in the cracks was affected by the crack opening, water storage space and drainage capacity, resulting in an obvious regional variation in apparent resistivity. The changes in apparent resistivity characteristics of true triaxial HF contain rich information about the fracture process, which is significant for guiding on-site HF and effect evaluation.
Similar content being viewed by others
References
Chen, P. (2013). Direct current electric method response of regional coal and gas outburst danger and its application. China University of Mining and Technology (in Chinese).
Chen, G., & Lin, Y. (2004). Stress–strain–electrical resistance effects and associated state equations for uniaxial rock compression. International Journal of Rock Mechanics and Mining Sciences, 41(2), 223–236.
Chen, G., Tian, J., & Yao, G. (2005). Electrical effect of rock stress and its fracture evolution laws. Chinese Journal of Rock Mechanics and Engineering, 24(11), 1832–1840.
Chen, P., Peng, S., Yang, T., Chen, X., Liu, Y., & Wang, P. (2019a). Study on the law of coal resistivity variation in the process of gas adsorption/desorption. Open Physics, 17(1), 623–630.
Chen, P., Wang, E., Chen, X., Liu, Z., Li, Z., & Shen, R. (2015). Regularity and mechanism of coal resistivity response with different conductive characteristics in complete stress-strain process. International Journal of Mining Science and Technology, 25(05), 779–786.
Chen, P., Wang, E., & Zhu, Y. (2013). Experimental study on resistivity variation regularities of loading coal. Journal of China Coal Society, 38(4), 548–553.
Chen, P., Yang, T., Chen, X., Chen, X., Liu, Y., Li, X., & Zhang, K. (2019b). Experimental study on electrical characteristics of gassy coal during extrusion process in different stage. Arabian Journal of Geosciences, 12(14), 430. https://doi.org/10.1007/s12517-019-4587-6
Fan, S., Zhang, D., Wen, H., Cheng, X., Liu, X., Yu, Z., & Hu, B. (2020). Enhancing coalbed methane recovery with liquid CO2 fracturing in underground coal mine: From experiment to field application. Fuel. https://doi.org/10.1016/j.fuel.2020.119793
Guo, W., Liu, S., Liu, Y., & Chen, S. (2020). Application of electrical resistivity imaging to detection of hidden geological structures in a single roadway. Open Geosciences, 12(1), 1083–1093.
Hao, J., Feng, R., Zhou, J., Qian, S., & Gao, J. (2002). Discussion on the change mechanism of resistivity in the process of rock fracture. Chinese Journal of Geophysics, 45(03), 131–139.
Huang, B., Liu, J., & Zhang, Q. (2018). The reasonable breaking location of overhanging hard roof for directional hydraulic fracturing to control strong strata behaviors of gob-side entry. International Journal of Rock Mechanics and Mining Sciences, 103, 1–11.
Huang, B., Lu, W., & CHEN, S., & Zhao, X. . (2020). Experimental investigation of the functional mechanism of methane displacement by water in the coal. Adsorption Science & Technology, 38(9–10), 357–376.
Huang, B., Zhao, X., & Liu, J. (2017). Theory and technology of controlling hard roof with hydraulic fracturing in underground mining. Chinese Journal of Rock Mechanics and Engineering, 36(12), 2954–2970.
Kang, H., & Feng, Y. (2012). Monitoring of stress change in coal seam caused by directional hydraulic fracturing in working face with strong roof and its evolution. Journal of China Coal Society, 37(12), 1953–1959.
Krishnamurthy, N., Rao, V., Kumar, D., Singh, K., & Ahmed, S. (2009). Electrical resistivity imaging technique to delineate coal seam barrier thickness and demarcate water filled voids. Journal of the Geological Society of India, 73(5), 639–650.
Li, D., Wang, E., Song, D., Qiu, L., & Kong, X. (2018). Spatio-temporal evolution of apparent resistivity during coal-seam hydraulic flushing. Journal of Geophysics and Engineering, 15(3), 707–717. https://doi.org/10.1088/1742-2140/aaa228
Li, S., Xu, X., Liu, Z., Yang, W., Liu, B., Zhang, X., et al. (2014). Electrical resistivity and acoustic emission response characteristics and damage evolution of sandstone during whole process of uniaxial compression. Chinese Journal of Rock Mechanics and Engineering, 33(01), 14–23.
Li, X., & Zhang, Q. (2019). Study on Damage Evolution and Resistivity Variation Regularities of Coal Mass Under Multi-Stage Loading. Applied Sciences, 9(19), 4124. https://doi.org/10.3390/app9194124
Li, X., Zhang, Q., An, Z., Chen, X., & Zhang, F. (2020). Experimental research on electrical resistivity variation of coal under different loading modes. Arabian Journal of Geosciences, 13(20), 1068. https://doi.org/10.1007/s12517-020-06046-7
Li, Z., Niu, Y., Wang, E., & He, M. (2019). Study on electrical potential inversion imaging of abnormal stress in mining coal seam. Environmental Earth Sciences, 78(8), 255. https://doi.org/10.1007/s12665-019-8246-8
Lin, B., Li, Z., Zhai, C., Bi, Q., & Wen, Y. (2011). Pressure relief and permeability-increasing technology based on high pressure pulsating hydraulic fracturing and its application. Journal of Mining & Safety Engineering, 28(3), 452–455.
Liu, B., Li, S., Li, S., & Li, L. (2010). Application of electrical tomography monitoring system to mine water inrush model test. Chinese Journal of Rock Mechanics and Engineering, 29(02), 297–307.
Liu, S., Liu, X., Jiang, Z., Xing, T., & Chen, M. (2009). Research on electrical prediction for evaluating water conduction fracture zones in coal seam floor. Chinese Journal of Rock Mechanics and Engineering, 28(02), 348–356.
Liu, Z., Ren, X., Lin, X., Lian, H., Yang, L., & Yang, J. (2020). Effects of confining stresses, pre-crack inclination angles and injection rates: observations from large-scale true triaxial and hydraulic fracturing tests in laboratory. Rock Mechanics and Rock Engineering, 53(3), 1991–2000.
Liu, Z., Wang, S., Ye, H., Yang, L., Feng, F., Lian, H., & Yang, D. (2021a). Experimental study on the effects of pre-cracks, fracturing fluid, and rock mechanical characteristics on directional hydraulic fracturing with axial pre-cracks. Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 7(2), 29. https://doi.org/10.1007/s40948-021-00225-w
Liu, Z., Yang, J., Yang, L., Ren, X., Peng, X., & Lian, H. (2021b). Experimental study on the influencing factors of hydraulic fracture initiation from prefabricated crack tips. Engineering Fracture Mechanics, 250, 107790. https://doi.org/10.1016/j.engfracmech.2021.107790
Ma, Y., Liu, Z., Cheng, Y., Zhou, J., Wu, H., & Sun, J. (2016). Laboratory test research on borehole strain and electrical resistivity response characteristic of coal samples in hydraulic fracture process. Chinese Journal of Rock Mechanics and Engineering, 35(S1), 2862–2868.
Qiu, L., Shen, R., Song, D., Wang, E., Liu, Z., Niu, Y., Jia, H., Xia, S., & Zheng, X. (2017). Non-destructive testing principles and accurate evaluation of the hydraulic measure impact range using the DC method. Journal of Geophysics and Engineering, 14(6), 1521–1534.
Qiu, L., Song, D., Wang, E., Liu, Z., Shen, R., Li, D., Jia, H., & Sen, H. (2018). Determination of hydraulic flushing impact range by DC resistivity test method. International Journal of Rock Mechanics and Mining Sciences, 107, 127–135.
Shao, L., Huang, B., Zhao, X., & Xing, Y. (2020). Criteria for the progressive initiation and propagation of radial and axial fractures of borehole during rock hydraulic fracturing. Energy Sources, Part a: Recovery, Utilization, and Environmental Effects. https://doi.org/10.1080/15567036.2020.1867256
Shi, L., Wang, Y., Qiu, M., Gao, W., & Zhai, P. (2019). Application of three-dimensional high-density resistivity method in roof water advanced detection during working stope mining. Arabian Journal of Geosciences, 12(15), 464. https://doi.org/10.1007/s12517-019-4586-7
Song, D., Liu, Z., Wang, E., Qiu, L., Gao, Q., & Xu, Z. (2015). Evaluation of coal seam hydraulic fracturing using the direct current method. International Journal of Rock Mechanics and Mining Sciences, 78, 230–239.
Wang, E., Chen, P., Li, Z., Shen, R., Xu, J., & Zhu, Y. (2014). Resistivity response in complete stress-strain process of loaded coal. Journal of China Coal Society, 39(11), 2220–2225.
Wang, E., Chen, P., Liu, Z., Liu, Y., Li, Z., & Li, X. (2019). Fine detection technology of gas outburst area based on direct current method in Zhuxianzhuang Coal Mine, China. Safety Science, 115, 12–18.
Wang, L., Liu, S., Cheng, Y., Yin, G., Zhang, D., & Guo, P. (2017). Reservoir reconstruction technologies for coalbed methane recovery in deep and multiple seams. International Journal of Mining Science and Technology, 27(2), 277–284.
Wang, Q., Su, X., Su, L., Guo, H., Song, J., & Zhu, Z. (2020). Theory and application of pseudo-reservoir hydraulic stimulation for coalbed methane indirect extraction in horizontal well: part 2-application. Natural Resources Research, 29(6), 3895–3915.
Wang, Y., Liu, Y., & Ma, H. (2012). Changing regularity of rock damage variable and resistivity under loading condition. Safety Science, 50(4), 718–722.
Wang, Y., Wei, J., & Yang, S. (2011). Experimental Research on Electrical Parameters Variation of Loaded Coal. Procedia Engineering, 26, 890–897.
Wen, H., Wang, H., Fan, S., Li, Z., Chen, J., Cheng, X., Cheng, B., & Yu, Z. (2020). Improving coal seam permeability and displacing methane by injecting liquid CO2: An experimental study. Fuel, 281, 118747. https://doi.org/10.1016/j.fuel.2020.118747
Xia, B., Zhang, X., Yu, B., & Jia, J. (2018). Weakening effects of hydraulic fracture in hard roof under the influence of stress arch. International Journal of Mining Science and Technology, 28(06), 951–958.
Xu, Y., Zhang, E., Luo, Y., Zhao, L., & Yi, K. (2020). Mechanism of water inrush and controlling techniques for fault-traversing roadways with floor heave above highly confined aquifers. Mine Water and the Environment, 39(2), 320–330.
Yue, J., Zhang, H., Yang, H., & Li, F. (2019). Electrical prospecting methods for advance detection progress, problems, and prospects in Chinese coal mines. IEEE Geoscience and Remote Sensing Magazine, 7(3), 94–106.
Zhai, C., Liu, X., & Li, Q. (2011). Research and application of coal seam pulse hydraulic fracturing technology. Journal of China Coal Society, 36(12), 1996–2001.
Zhao, C., Lei, D., & Zhang, Y. (2020). Orthogonal fracture resistance-capacitance model of complex resistance of containing water coal seam. Journal of China Coal Society, 45(10), 3541–3547.
Zhao, S., Zhang, G., Chai, H., Su, Z., Liu, Y., & Zhang, X. (2019). Mechanism of rockburst prevention for directional hydraulic fracturing in deep-hole roof and effect test with multi-parameter. Journal of Mining & Safety Engineering, 36(06), 1247–1255.
Zhong, J., Ge, Z., Lu, Y., Zhou, Z., & Zheng, J. (2021). New mechanical model of slotting-directional hydraulic fracturing and experimental study for coalbed methane development. Natural Resources Research, 30(1), 639–656.
Acknowledgments
We would like to thank the editor and anonymous reviewers for their constructive comments. We would like to thank Professor Bingxiang HUANG, Dr. Xinyu WANG and Dr. Weichen SUN from China University of Mining and Technology for their help in doing laboratory experiment. This work was supported by the National Natural Science Foundation of China (51874296, 52174221), The Natural Science Foundation of Jiangsu Province (BK20190080), the China Postdoctoral Science Foundation Grant (2018M640533).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, N., Yan, M., Zhao, H. et al. Experimental Study on the Response Characteristics of the Apparent Resistivity of Rock True Triaxial Hydraulic Fracturing. Nat Resour Res 30, 4885–4904 (2021). https://doi.org/10.1007/s11053-021-09961-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11053-021-09961-y