Abstract
Deep coalbed methane exists in high-temperature and high-pressure reservoirs. To elucidate the dynamic-change laws of the deep coal reservoir porosity and permeability characteristics in the process of coalbed methane production, based on three pieces of low- to medium-rank coal samples in the eastern Junggar Basin, Xinjiang, we analyse their mercury-injection pore structures. We measured the porosity and permeability of the coal samples at various temperatures and confining pressures by high-temperature and confining pressure testing. The results show that the porosity of a coal sample decreases exponentially with increasing effective stress. With increasing temperature, the initial porosity increases for two pieces of relatively low-rank coal samples. The increased rate of porosity decreases with increasing confining pressure. With increasing temperature, the initial porosity of a relatively high-rank coal sample decreases, and the rate of change of the porosity become faster. An exponential relationship exists between the porosity and permeability. With increasing coal rank, the initial porosity and permeability decrease. The change rate of the permeability decreases with increasing porosity.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References Cited
Cai, Y. D., Liu, D. M., Pan, Z. J., et al., 2014. Pore Structure of Selected Chinese Coals with Heating and Pressurization Treatments. Science China Earth Sciences, 57(7): 1567–1582. https://doi.org/10.1007/s11430-014-4855-y
Carman, P. C., 1956. Flow of Gases through Porous Media. Butterworths Scientific Publications, London. 12–33 China National Petroleum and Gas Corporation Oil and Gas Field Development Professional Standardization Committee,1996. Method of Core Routine Analysis, SY/T 5336-1996. China National Petroleum Corporation, Beijing. 1–79 (in Chinese)
Chen, Z. H., 2007. Key Controlling Factors Comparison between High and Low Rank CBM Reservoir Formation: [Dissertation]. University of the Chinese Academy of Sciences, Guangzhou. 31 (in Chinese with English Abstract)
Cheng, D. R., Chen, H. Y., Xian, X. F., et al., 1998. Experiments on the Affection of Temperature on Permeability Coefficient of Coal Samples. Coal Engineer, 1: 13–16 (in Chinese with English Abstract)
Cui, S. H., Liu, H. L., Wang, B., 2007. Trapping Characteristics of Coalbed Methane in Low-Rank Coal of Zhungaer Basin. Geoscience, 21(4): 719–724 (in Chinese with English Abstract)
Cui, X. J., Bustin, R. M., 2005. Volumetric Strain Associated with Methane Desorption and Its Impact on Coalbed Gas Production from Deep Coal Seams. AAPG Bulletin, 89(9): 1181–1202. https://doi.org/10.1306/05110504114
Feng, M. S., Yuan, S. Y., Zhao, L. M., 2008. Permeability Up-Scaling Method Based on the Relationship between Porosity and Permeability. Xinjiang Petroleum Geology, 29(4): 502–503 (in Chinese with English Abstract)
Gürdal, G., Yalçın, M. N., 2001. Pore Volume and Surface Area of the Carboniferous Coals from the Zonguldak Basin (NW Turkey) and Their Variations with Rank and Maceral Composition. International Journal of Coal Geology, 48(1): 133–144. https://doi.org/10.1016/S0166-5162(01)00051-9
Harpalani, S., MoPherson, M. J., 1984. The Effect of Gas Evacuation on Coal Permeability Test Specimens. International Journal of Rock Mechanics and Mining Sciences, 21(3): 161–164. https://doi.org/10.1016/0148-9062(84)91534-1
He, Y. L., Yang, L. Z., 2005. Mechanism of Effects of Temperature and Effective Stress on Permeability of Sandstone. Chinese Journal of Rock Mechanics and Engineering, 24(14): 2420–2427 (in Chinese with English Abstract)
Jasinge, D., Ranjith, P. G., Choi, S. K., 2011. Effects of Effective Stress Changes on Permeability of Latrobe Valley Brown Coal. Fuel, 90(3): 1292–1300. https://doi.org/10.1016/j.fuel.2010.10.053
Lan, F. J., Qin, Y., Li, M., et al., 2012. Abnormal Concentration and Origin of Heavy Hydrocarbon in Upper Permian Coal Seams from Enhong Syncline, Yunnan. Journal of Earth Science, 23(6): 842–853. https://doi.org/10.1007/s12583-012-0294-x
Laubach, S. E., Marrett, R. A., Olson, J. E., et al., 1998. Characteristics and Origins of Coal Cleat: A Review. International Journal of Coal Geology. 35(1–4): 175–207. https://doi.org/10.1016/S0166-5162(97)00012-8
Li, G. Z., Sun, F. J., Li, W. Z., et al., 2012. Low-Rank Coalbed Methane Geology of the Northwest China. Petroleum Industry Press, Beijing. 1–20 (in Chinese)
Li, M., Jiang, B., Lin, S. F., et al., 2013. Structural Controls on Coalbed Methane Reservoirs in Faer Coal Mine, Southwest China. Journal of Earth Science, 24(3): 437–448. https://doi.org/10.1007/s12583-013-0340-3
Li, Z. Q., Xian, X. F., Long, Q. M., 2009. Experiment Study of Coal Permeability under Different Temperature and Stress. Journal of China University of Mining & Technology, 38(4): 523–527 (in Chinese with English Abstract)
Liu, C. L., Zhu, J., Che, C. B., et al., 2009. Methodologies and Results of the Latest Assessment of Coalbed Methane Resources in China. Natural Gas Industry, 29 (11): 130–132 (in Chinese with English Abstract)
McKee, C. R., Bumb, A. C., Koenig, R. A., 1988. Stress-Dependent Permeability and Porosity of Coal and Other Geologic Formations. SPE Formation Evaluation, 3(1): 81–91. https://doi.org/10.2118/12858-PA
Moosavi, S. A., Goshtasbi, K., Kazemzadeh, E., et al., 2014. Relationship between Porosity and Permeability with Stress Using Pore Volume Compressibility Characteristic of Reservoir Rocks. Arabian Journal of Geosciences, 7(1): 231–239. https://doi.org/10.1007/sl12517-012-0760-x
Nelson, C. R., Hill, D. G., Pratt, T. J., 2000. Properties of Paleocene Fort Union Formation Canyon Seam Coal at the Triton Federal Coalbed Methane Well Campbell County Wyoming. In SPE/CERI Gas Technology Symposium. Society of Petroleum Engineers, Calgary. https://doi.org/10.2118/59786-MS
Nelson, C. R., 2003. Deep Coalbed Gas Plays in the US Rocky Mountain Region. Annual Meeting Expanded Abstracts—American Association of Petroleum Geologists, 12: 127
Nelson, P. H., Kibler, J. E., 1994. Permeability-Porosity Relationships in Sedimentary Rocks. The Log Analyst, 35(3): 38–62
Niu, S. W., Zhao, Y. S., Hu, Y. Q., 2014. Experimental Investigation of the Temperature and Pore Pressure Effect on Permeability of Lignite under the in situ Condition. Transport in Porous Media, 101(1): 137–148. https://doi.org/10.1007/s11242-013-0236-9
Olson, T., Hobbs, B., Brooks R., et al., 2002. Paying off for Tom Brown in white River Dom Field’s Tight Sandstone and Deep Coals. The American Oil and Gas Reports, 10: 67–75
Palmer, I., 2009. Permeability Changes in Coal: Analytical Modeling. International Journal of Coal Geology, 77(1): 119–126, https://doi.org/10.1016/j.coal.2008.09.006
Palmer, I., 2010. The Permeability Factor in Coalbed Methane Well Completions and Production. SPE Western Regional Meeting, Anaheim. https://doi.org/10.2118/131714-MS
Palmer, I., Mansoori, J., 1996. How Permeability Depends on Stress and Pore Pressure in Coalbeds, a New Model. SPE Annual Technical Conference and Exhibition, Denver. https://doi.org/10.2118/36737-ms
Palmer, I., Mansoori, J., 1998. How Permeability Depends on Stress and Pore Pressure in Coalbeds, a New Model. SPE Reservoir Evaluation and Engineering, 1(6): 539–544. https://doi.org/10.2118/52607-PA
Pan, Z., Connell, L. D., 2012. Modelling Permeability for Coal Reservoirs: A Review of Analytical Models and Testing Data. International Journal of Coal Geology, 92(1): 1–44. https://doi.org/10.1016/j.coal.2011.12.009
Perera, M. S. A., Ranjith, P. G., Choi, S. K., et al., 2012. Investigation of Temperature Effect on Permeability of Naturally Fractured Black Coal for Carbon Dioxide Movement: An Experimental and Numerical Study. Fuel, 94: 596–605. https://doi.org/10.1016/j.fuel.2011.10.026
Qin, Y., Fu, X. H., Wei, C. T., et al., 2012. The Dynamic Conditions of the Coalbed Methane and Its Control Effect. Science Press, Beijing, 286–292 (in Chinese)
Reiss, L. H., 1980. The Reservoir Engineering Aspects of Fractured Formations. Gulf Publishing Company, Houston. 67–77
Sang, S. X., Qin, Y., Guo, X. B., et al., 2003. Storing Characteristics of Jurassic Coalbed Gas in Junggar and Tuha Basins. Geological Journal of China Universities, 9(3): 365–372 (in Chinese with English Abstract)
Seidle, J. P., Jeansonne, M. W., Erickson, D. J., 1992. Application of Matchstick Geometry to Stress Dependent Permeability in Coals. SPE Rocky Mountain Regional Meeting, Casper. SPE 24361. https://doi.org/10.2118/24361-MS
Shen, J., 2011. CBM-Reservoiring Effect in Deep Strata: [Dissertation]. China University of Mining and Technology, Xuzhou (in Chinese with English Abstract)
Shen, J., Qin, Y., Wang, G. X., et al., 2011. Relative Permeabilities of Gas and Water for Different Rank Coals. International Journal of Coal Geology, 86(2): 266–275. https://doi.org/10.1016/j.coal.2011.03.001
Shengli Petroleum Administration Institute of Geological Sciences, 1999. The Porosity and Permeability Measurement of Core in Net Confining Stress, SY/T 6385-1999. State Bureau of Petroleum and Chemical Industry, Beijing. 1–10 (in Chinese)
Shi, J. Q., Durucan, S., 2004. Drawdown Induced Changes in Permeability of Coalbeds, a New Interpretation of the Reservoir Response to Primary Recovery. Transport in Porous Media, 56(1): 1–16. https://doi.org/10.1023/b:tipm.0000018398.19928.5a
Somerton, W. H., Söylemezoḡlu, I. M., Dudley, R. C., 1975. Effect of Stress on Permeability of Coal. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 12(5): 129–145. https://doi.org/10.1016/0148-9062(75)91244-9
Song, Q. Y., 2004. Study on Deep Coalbed Methane Reservoir-Forming Conditions and Its Recovery Potential: [Dissertation]. China University of Mining and Technology, Xuzhou (in Chinese with English Abstract)
Tang, D. Z., Liu, D. M., Tang, S. H., et al., 2014. Reservoir Dynamic Geological Effect during Coalbed Methane Development Process. Science Press, Beijing. 20–24 (in Chinese)
Wang, G., Qin, Y., Shen, J., et al., 2014. Experimental Studies and Modeling Analysis of the Deep Low-Rank Coal Reservoirs’ Permeability Based on Variable Pore Compressibility. Acta Petrolei Sinica, 35(3): 462–468 (in Chinese with English Abstract)
Yin, G., Jiang, C., Wang, J. G., et al., 2013. Combined Effect of Stress, Pore Pressure and Temperature on Methane Permeability in Anthracite Coal: An Experimental Study. Transport in Porous Media, 100(1): 1–16. https://doi.org/10.1007/s11242-013-0202-6
Zhou, Z. Y., Pan, C. C., 1992. Pale Temperature Analysis Methods and Their Application in Sedimentary Basins. Guangzhou Science and Technology Press, Guangzhou. 115–171 (in Chinese)
Acknowledgments
This research was funded by the National Natural Science Fundation of China (Nos. 41672149, 41302131, 41362009), the Key Project of the National Natural Science Foundation of China (No. 41530314), the Scientific Research Foundation of the Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process of the Ministry of Education, China University of Mining and Technology, (No. 2017-001), the National Science and Technology Major Project of the Ministry of Science and Technology of China (Nos. 2016ZX05044-002, 2011ZX05033, 2011ZX05034), and the Fundamental Research Funds for the Central Universities (No. 2012QNB32). The final publication is available at Springer via https://doi.org/10.1007/s12583-017-0908-4.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wang, G., Qin, Y., Shen, J. et al. Dynamic-Change Laws of the Porosity and Permeability of Low- to Medium-Rank Coals under Heating and Pressurization Treatments in the Eastern Junggar Basin, China. J. Earth Sci. 29, 607–615 (2018). https://doi.org/10.1007/s12583-017-0908-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12583-017-0908-4