CBM Injection/Falling Off Well-Test Parameters' Optimization and Study in the Middle of Qinshui Basin, China

Xiaonan LI, Changqing LIU, Qing FENG, Ming ZENG, Zijun HUANG

Abstract


As one effective mean of obtaining CBM parameters, injection/falling off well-test also has abnormal results. This paper studies process parameters’ optimization such as injecting pressure, injecting volume, shut-in time and reservoir closure pressure, which will insure test procedure and results’ reliability. In order to avoid ambiguity of well-test results it studies fluid and reservoir parameters’ impacts on well-test interpretation results, and determines the range of parameters’ value such as compression co-efficient, fluid viscosity and so on. The results prove that injection parameters’ design affects field test success, determines whether test data truly reflect reservoir information or not, and its values may affect the accuracy of well-test interpretation. This paper’s study will play an important role on solving injection/falling off well-test abnormal problems.

Keywords


CBM reservoir; Injection/falling off well-test; Process parameters; Reservoir closure pressure; Well-test interpretation

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References


Aminian, K., Ameri, S., Bhavsa,r A., Sanchez, M., Garcia, A. (2005). Type curves for production prediction and evaluation of coalbed methane reservoirs. Paper Spe.
Chen, Z. H., Jia, C. Z., Song, Y., Wang, H. Y., & Wang, Y. B. (2008). Differences and origin of physical properties of low-rank and high-rank coalbed methanes. Acta Petrolei Sinica, 29 (2), 179-184.
Chen, Z. W., Liu, J. S., Elsworth, D., Pan, Z. J., & Wang, S. G. (2013). Roles of coal heterogeneity on evolution of coal permeability under unconstrained boundary conditions. Journal of Natural Gas Science and Engineering, (15), 38-52.
Clarkson, C. R., Pan, Z. J., Palmer, I. D., & Harpalani, S. (2008). Predicting sorption-induced strain and permeability increase with depletion for CBM reservoirs. SPE Journal, 15(1), 152-159.
Dong, J., & Hu, J. (2013). Common problems and Countermeasures in well testing construction of coal bed gas well. The Standards and Quality of Chinese Petroleum and Chemical Industry, 2(4), 6-12.
Dong, S. L., Zhang, X. P., Li, X. L. (1997). Injection/pressure drop method for coal seam gas well test. Well test, 6(3), 64-66.
Fu, H. J., Tang, D. Z., Xu, H., Xu, T., Chen, B. L., Hu, P., Yin, Z. Y., Wu, P., & He, G. J. (2016). Geological characteristics and CBM exploration potential evaluation: A case study in the middle of the southern Junggar Basin, NW China. Journal of Natural Gas Science and Engineering, 84(1), 557-570.
Gensterblum, Y., Ghanizadeh, A., & Krooss, B. M. (2014). Gas permeability measurements on Australian subbituminous coals: fluid dynamic and poroelastic aspects. Journal of Natural Gas Science and Engineering, (19), 202-214.
Ide, Y., Ochi, N., Ogawa, & M. (2011). Effective and Selective Adsorption of Zn2+ from Seawater on a Layered Silicate[J]. Angewandte Chemie International Edition, 50(3), 654-667.
Izadi, G., Wang, S. G., Elsworth, D., Liu, J. S., Wu, Y., & Pone, D. (2011). Permeability evolution of fluid-infiltrated coal containing discrete fractures. International Journal of Coal Geology, (85), 202-211.
Ju, Y. W., Li, Q. G., Yan, Z. F., Sun, Y., & Bao, Y. (2014). Origin types of CBM and their geochemical research progress. Journal of China Coal Society, 39(5), 807-814
Li, J. Q., Liu, D. M., Yao, Y. B., Cai, Y. D., & Chen, Y. (2013). Evaluation and modeling of gas permeability changes in anthracite coals. Fuel, (111), 606-612.
Li, J. Y., & Tao, M. X. (1998). International study on the origin and composition of coalbed gas. Advance in Earthences, 13(5), 467-473.
Liu, l. J. (2004). Study on injection/pressure drop test technology for coal seam gas well. Gas industry, 24(5), 79 -81.
Mahjour, S. K., Mohammad, A-A., Mohsen, M. (2015). Identification of Flowunits using Methods of Testerman Statistical Zonation, Flow Zone Index, and Cluster Analysis in Tabnaak Gas Field. Petroleum & Environmental Biotechnology, 6(6), 577-592.
Mazumder, S., Scott, M., Jiang, J. (2012). Permeability increase in Bowen Basin coal as a result of matrix shrinkage during primary depletion. International Journal of Coal Geology, 96(1), 109–119.
Meng, Y. J., Tang, D. Z., Xu, H., Li, C., Li, L., & Meng, S. Z. (2014). Geological controls and coalbed methane production potential evaluation: a case study in theLiulin area, eastern Ordos Basin, China. Journal of Natural Gas Science and Engineering. (21), 95–111.
Michel, G. G., Sigal, R. F., Civan, F., & Devegowda, D. (2011). Parametric investigation of shale gas production considering Nano-scale pore size distribution, formation factor, and non-Darcy flow mechanisms. Society of Petroleum Engineers, 1-20.
Muchanyereyi. N., Chiripayi, L., Shashaet, D., & Mupa, M. (2013). Adsorption of phenol from aqueous solution using carbonized maize tassels. British Journal of Applied Science & Technology, 3(3), 648-661.
Song, Y., Liu, S. B., Zhang, Q., Tao, M. X., Zhao, M. J., & Hong, F. (2012). Coalbed methane genesis, occurrence and accumulation in China. Pet Sci, 9(3), 269–80.
Su, X. B., Lin, X. Y., Liu, S. B., Zhao, M. J., & Song, Y. (2005). Geology of coalbed methane reservoirs in the Southeast Qinshui Basin of China. Internatinal Journal of Coal Geology, 62 (4), 197-210.
Tao, M. X., Shi, B. G., Li, J. Y., Wang, W. C., Li, X. B., & Gao, B. (2007). Secondary biological coalbed gas in the Xinji area, Anhui province, China: Evidence from the geochemical features and secondary changes. International Journal of Coal Geology, 71(2-3), 358-370.
Tian, L., Xiao, C., Liu, M. J., Gu, D. H., Song, G. Y., Cao, H. L., & Li, X. L. (2014). Well testing model for multi-fractured horizontal well for shale gas reservoirs with consideration of dual diffusion in matrix. Journal of Natural Gas Science and Engineering, (21), 283-295.
Wu, Y., Ning, Z. F., Yao, Y. D. (2004). Non-Darcy seepage experiment in low- permeability gas reservoir and influence factors analysis. J. Southwest. Pet. Univ., (26), 35-38.
Xue,Y., Gao, F., Gao, Y. N., Cheng, H. M., Liu, Y. K., Hou, P., & Teng, T. (2016). Quantitative evaluation of stress-relief and permeability-increasing effects of overlying coal seams for coal mine methane drainage in Wulan coal mine. Journal of Natural Gas Science and Engineering, 32,122-137.
Yang, X. C., Jie, M. X., & Wang, G. Q. (2008). Analysis on the influence factors of productivity in the test area of the coal bed methane in Pan River. Gas Industry, 28(3), 99-101.
Yang, Y., Peters, M., Cloud, T. A., & Van Kirk, C. W. (2006). Gas productivity related to cleat volumes derived from focused resistivity tools in Coalbed Methane (CBM) Fields. Petrophysics,47(3), 250-257.
Zhanghong, Ganxia.,2004. Balance test of hydraulic fracturing fracture closure pressure [J]. Foreign oil field engineering,24(10), 19-21.
Zhao, Y. L., Zhang, L. H., Luo, J. X., & Zhang, B. N. (2014). Performance of fractured horizontal well with stimulated reservoir volume in unconventional gas reservoir. Journal of Hydrology, 512 (10), 447-456.
Zhong, D. H., Ren, B. Y., Li, M. C., Wu, B. P., & Li, M. C. (2010). Theory on real-time control of construction quality and progress and its application to high arc dam. Science China Technological Sciences, 53, 2611-2618.




DOI: http://dx.doi.org/10.3968/10106

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