Experimental Study of Low-Temperature Shale Combustion and Pyrolysis Under Inert and Noninert Environments
- Wei Chen (Soochow University) | Yu Zhou (Soochow University) | Weigang Yu (Soochow University) | Leilei Yang (China University of Petroleum, Beijing)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- January 2019
- Document Type
- Journal Paper
- 2019.Society of Petroleum Engineers
- pyrolysis, shale, pore, combustion, permeability
- 11 in the last 30 days
- 33 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 10.00|
|SPE Non-Member Price:||USD 30.00|
In this study, shale samples were heated under inert and noninert environments to increase the permeability of the shale. The nanoscale pore structure changes under combustion and pyrolysis [air, nitrogen (N2), carbon dioxide (CO2), and argon (Ar)] conditions were investigated. It was found that pore diameters increased under all the gas environments. Pore diameters increased more significantly under air environment compared with other gas conditions. However, the diameters of the shale particles remained almost constant during combustion. Moreover, gases emitted from the shale during the combustion and pyrolysis process were investigated using thermogravimetric analysis coupled to Fourier-transform infrared spectroscopy (TGA-FTIR). Finally, scanning electron microscopy (SEM) images showed larger pores on the surfaces of the combusted and pyrolyzed shale samples.
|File Size||1 MB||Number of Pages||10|
Adesida, A. G., Akkutlu, I., Resasco, D. E. et al. 2011. Characterization of Barnett Shale Kerogen Pore Size Distribution Using DFT Analysis and Grand Canonical Monte Carlo Simulations. Presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, 30 October–2 November. SPE-147397-MS. https://doi.org/10.2118/147397-MS.
Bubnovich, V. I., Zhdanok, S. A., and Dobrego, K. V. 2006. Analytical Study of the Combustion Waves Propagation Under Filtration of Methane—Air Mixture in a Packed Bed. Int J Heat Mass Transfer 49 (15–16): 2578–2586. https://doi.org/10.1016/j.ijheatmasstransfer.2006.01.019.
Chen, Q., Kang, Y., You, L. et al. 2017a. Change in Composition and Pore Structure of Longmaxi Black Shale During Oxidative Dissolution. Int J Coal Geol 172: 95–111. https://doi.org/10.1016/j.coal.2017.01.011.
Chen, W., Annamalai, K., Sun, J. et al. 2016a. Chemical Kinetics of Bean Straw Biofuel Pyrolysis Using Maximum Volatile Release Method. Korean J Chem Eng 33 (8): 2330–2336. https://doi.org/10.1007/s11814-016-0088-4.
Chen, W., Lei, Y., Chen, Y. et al. 2016b. Pyrolysis and Combustion Enhance Recovery of Gas for Two China Shale Rocks. Energy Fuels 30 (12): 10298–10305. https://doi.org/10.1021/acs.energyfuels.6b02274.
Chen, W., Lei, Y., and Hua, X. 2019. Flow Transportation Inside Shale Rocks at Low-Temperature Combustion Condition: A Simple Scaling Law. Combust Flame 199: 114–121. https://doi.org/10.1016/j.combustflame.2018.10.022.
Chen, W., Lei, Y., Ma, L. et al. 2017b. Experimental Study of High Temperature Combustion for Enhanced Shale Gas Recovery. Energy Fuels 31 (9): 10003–10010. https://doi.org/10.1021/acs.energyfuels.7b00762.
Chen, Y., Qin, Y., Wei, C. et al. 2018a. Porosity Changes in Progressively Pulverized Anthracite Subsamples: Implications for the Study of Closed Pore Distribution in Coals. Fuel 225: 612–622. https://doi.org/10.1016/j.fuel.2018.03.164.
Chen, W., Zhou, Y., Yang, L. et al. 2018b. Experimental Study of Low-Temperature Combustion Characteristics of Shale Rocks. Combust Flame 194: 285–295. https://doi.org/10.1016/j.combustflame.2018.04.033.
Dullien, F. A. L. 1979. Porous Media Fluid Transport and Pore Structure. New York: Elsevier.
Fan, C., Yan, J., Huang, Y. et al. 2015. XRD and TG-FTIR Study of the Effect of Mineral Matrix on the Pyrolysis and Combustion of Organic Matter in Shale Char. Fuel 139: 502–510. https://doi.org/10.1016/j.fuel.2014.09.021.
Han, X., Jiang, X., and Cui, Z. 2008. Change of Pore Structure of Oil Shale Particles During Combustion. 2. Pore Structure of Oil-Shale Ash. Energy Fuels 22 (2): 972–975. https://doi.org/10.1021/ef700645x.
Han, X., Jiang, X., Yu, A. L. et al. 2006. Change of Pore Structure of Oil Shale Particles During Combustion. Part 1. Evolution Mechanism. Energy Fuels 20 (6): 2408–2412. https://doi.org/10.1021/ef0603277.
Hartman, R. C., Ambrose, R. J., Akkutlu, I. Y. et al. 2011. Shale Gas-in-Place Calculations Part II—Multicomponent Gas Adsorption Effects. Presented at the North American Unconventional Gas Conference and Exhibition, The Woodlands, Texas, 14–16 June. SPE-144097-MS. https://doi.org/10.2118/144097-MS.
Ji, L., Zhang, T., Milliken, K. L. et al. 2012. Experimental Investigation of Main Controls to Methane Adsorption in Clay-Rich Rocks. Appl Geochem 27 (12): 2533–2545. https://doi.org/10.1016/j.apgeochem.2012.08.027.
Jiang, X. M., Han, X. X., and Cui, Z. G. 2007. Progress and Recent Utilization Trends in Combustion of Chinese Oil Shale. Prog Energy Combust Sci 33 (6): 552–579. https://doi.org/10.1016/j.pecs.2006.06.002.
Kibodeaux, K. R. 2014. Evolution of Porosity, Permeability, and Fluid Saturations During Thermal Conversion of Oil Shale. Presented at the SPE Annual Technical Conference and Exhibition, Amsterdam, The Netherlands, 27–29 October. SPE-170733-MS. https://doi.org/10.2118/170733-MS.
Kou, R., Alafnan, S. F. K., and Akkutlu, I. Y. 2017. Multi-Scale Analysis of Gas Transport Mechanisms in Kerogen. Transp Porous Media 116 (2): 493–519. https://doi.org/10.1007/s11242-016-0787-7.
Kuila, U., Prasad, M., and Kazemi, H. 2013. Assessing Knudsen Flow in Gas-Flow Models of Shale Reservoirs. Can Soc Explor Geophys 38 (5): 23–27. https://csegrecorder.com/articles/view/assessing-knudsen-flow-in-gas-flow-models-of-shale-reservoirs.
Li, P., Jiang, Z., Zheng, M. et al. 2016. Estimation of Shale Gas Adsorption Capacity of the Longmaxi Formation in the Upper Yangtze Platform, China. J Nat Gas Sci Eng 34: 1034–1043. https://doi.org/10.1016/j.jngse.2016.07.052.
Liu, J., Wang, J., Leung, C. et al. 2018. A Fully Coupled Numerical Model for Microwave Heating Enhanced Shale Gas Recovery. Energies 11 (6): 1608. https://doi.org/10.3390/en11061608.
Ma, Y., Zhong, N., Li, D. et al. 2015. Organic Matter/Clay Mineral Intergranular Pores in the Lower Cambrian Lujiaping Shale in the North-Eastern Part of the Upper Yangtze Area, China: A Possible Microscopic Mechanism for Gas Preservation. Int J Coal Geol 137: 38–54. https://doi.org/10.1016/j.coal.2014.11.001.
Momenzadeh, L., Moghtaderi, B., Buzzi, O. et al. 2018. The Thermal Conductivity Decomposition of Calcite Calculated by Molecular Dynamics Simulation. Comput Mater Sci 141: 170–179. https://doi.org/10.1016/j.commatsci.2017.09.033.
Ross, D. J. K. and Bustin, R. M. 2009. The Importance of Shale Composition and Pore Structure Upon Gas Storage Potential of Shale Gas Reservoirs. Mar Pet Geol 26: 916–927. https://doi.org/10.1016/j.marpetgeo.2008.06.004.
Sulem, J. and Famin, V. 2009. Thermal Decomposition of Carbonates in Fault Zones: Slip-Weakening and Temperature-Limiting Effects. J Geophys Res 114: 1–14. https://doi.org/10.1029/2008JB006004.
Sun, M., Yu, B., Hu, Q. et al. 2016. Nanoscale Pore Characteristics of the Lower Cambrian Niutitang Formation Shale: A Case Study From Well Yuke #1 in the Southeast of Chongqing, China. Int J Coal Geol 154–155: 16–29. https://doi.org/10.1016/j.coal.2015.11.015.
Wang, Y., Liao, B., Qiu, L. et al. 2019. Numerical Simulation of Enhancing Shale Gas Recovery Using Electrical Resistance Heating Method. Int J Heat Mass Transfer 128: 1218–1228. https://doi.org/10.1016/j.ijheatmasstransfer.2018.09.075.
Wang, Y.-d., Wang, X.-y., Xing, Y.-f. et al. 2017. Three-Dimensional Numerical Simulation of Enhancing Shale Gas Desorption by Electrical Heating With Horizontal Wells. J Nat Gas Sci Eng 38: 94–106. https://doi.org/10.1016/j.jngse.2016.12.011. Zhang, T., Ellis, G. S., Ruppel, S. C. et al. 2012. Effect of Organic-Matter Type and Thermal Maturity on Methane Adsorption in Shale-Gas Systems. Org Geochem 47: 120–131. https://doi.org/10.1016/j.orggeochem.2012.03.012.