Pressure Transient Analysis for Finite Conductivity Multi-staged Fractured Horizontal Well in Fractured-Vuggy Carbonate Reservoirs
International Journal of Oil, Gas and Coal Engineering
Volume 4, Issue 1-1, February 2016, Pages: 1-7
Received: Aug. 12, 2015;
Accepted: May 17, 2016;
Published: Jun. 30, 2016
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Mingqiang Wei, State Key Laboratory of Oil and Gas Reservoirs Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan Province, PR China
Yonggang Duan, State Key Laboratory of Oil and Gas Reservoirs Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan Province, PR China
Xuemei Zhou, Shell China Exploration and Production Co, Chengdu, Sichuan Province, PR China
Quantang Fang, State Key Laboratory of Oil and Gas Reservoirs Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan Province, PR China
Transient pressure analysis has been considered as a robust method to identify the flow behaviors, estimate reservoir parameters and hydraulic fracturing parameters. Compared with conventional clastic reservoirs, complex pore systems in fractured–vuggy carbonate reservoirs are posing significant research challenges. Although pressure transient analysis(PTA) models for different style wells in carbonate reservoirs have been widely studied, limited study has been conducted for multi-fractured horizontal well (MFHW) in these reservoirs. Thus, this paper is an investigation on PTA for MFHW of fractured-vuggy carbonate reservoirs. Based on source function theory, mirrors reflection and superposition principle,, the finite conductive MFHW’s bottom-hole pressure solution for fractured-vuggy carbonate reservoirs is obtained by the Laplace transform and the Stehfest inversion method. Log-log type curves are drawn by numerical algorithms and eight flow regimes are identified. Finally the influences of sensitivity parameters such as fracture number, fracture spacing, half length of fracture, storativity ratio, inter-porosity flow coefficient on unsteady flow behaviors of MFHW are discussed in depth.
Pressure Transient Analysis for Finite Conductivity Multi-staged Fractured Horizontal Well in Fractured-Vuggy Carbonate Reservoirs, International Journal of Oil, Gas and Coal Engineering. Special Issue: Advances in Modeling of Fluids Flow in Porous Media.
Vol. 4, No. 1-1,
2016, pp. 1-7.
Abdassah D, Ershaghi I. Triple-porosity systems for representing naturally fractured reservoirs [J]. SPE Formation Evaluation, 1986, 1(02): 113-127.
Liu J, Bodvarsson G S, Wu Y S. Analysis of flow behavior in fractured lithophysal reservoirs [J]. Journal of contaminant hydrology, 2003, 62: 189-211.
Mai A, Kantzas A. Porosity distributions in carbonate reservoirs using low-field NMR [J]. Journal of Canadian Petroleum Technology, 2007, 46(07):30–36
Fuentes-Cruz G, Camacho-Velázquez R, Vásquez-Cruz M. Pressure transient and decline curve behaviors for partially penetrating wells completed in naturally fractured-vuggy reservoirs [C]. SPE 92116, 2004.
Camacho-Velazquez R, Vasquez-Cruz M, Castrejon-Aivar R, et al. Pressure transient and decline curve behaviors in naturally fractured vuggy carbonate reservoir s[C]. SPE 77689, 2002.
Cai, M. J., Jia, Y. L. Dynamic analysis for pressure in limit conductivity vertical fracture wells of triple porosity reservoir [J]. well testing, 2007,16(5): 12-15.
Cheng, S. Q., Zhang, L. J., Li, X. F. Well-test analysis of multi-branched horizontal wells in a triple medium reservoir [J]. Chinese Journal of Hydrodynamics, 2009, 24(2):127-132.
Corbett P, Geiger-Boschung S, Borges L, et al. Limitations in numerical well test modeling of fractured carbonate rocks [C]. SPE 130252, 2010.
Gulbransen A F, Hauge V L, Lie K A. A multiscale mixed finite element method for vuggy and naturally fractured reservoirs [J]. SPE Journal, 2010, 15(02): 395-403.
Wu Y S, Liu H H, Bodvarsson G S. A triple-continuum approach for modeling flow and transport processes in fractured rock [J]. Journal of Contaminant Hydrology, 2004, 73(1): 145-179.
Wu, Y S., Qin G., Ewing R E, et al. A multiple-continuum approach for modeling multiphase flow in naturally fractured vuggy petroleum reservoirs [C]. SPE 104173, 2006.
Wu Y S, Di Y, Kang Z, et al. A multiple-continuum model for simulating single-phase and multiphase flow in naturally fractured vuggy reservoirs [J]. Journal of Petroleum Science and Engineering, 2011, 78(1): 13-22.
Ren, J. J., Guo, P., Wang, Z. H. Dynamical charateristic analysis of inclined well in triple medium reservoir [J]. Chinese Journal of Hydrodynamics, 2012, 27(1) :7-14.
Jia Y L, Fan X Y, Nie R S, et al. Flow modeling of well test analysis for porous–vuggy carbonate reservoirs[J]. Transport in Porous Media, 2013, 97(2): 253-279.
Wang L, Wang X, Luo E, et al. Analytical modeling of flow behavior for wormholes in naturally fractured–vuggy porous media [J]. Transport in Porous Media, 2014, 105(3): 539-558.
Chen P, Wang X, Liu H, et al. A pressure-transient model for a fractured-vuggy carbonate reservoir with large-scale cave [J]. Geosystem Engineering, 2015: 1-8.
Guo J C, Nie R S, Jia Y L. Dual permeability flow behavior for modeling horizontal well production in fractured-vuggy carbonate reservoirs [J]. Journal of hydrology, 2012, 464: 281-293.
Nie R S, Meng Y F, Jia Y L, et al. Dual porosity and dual permeability modeling of horizontal well in naturally fractured reservoir[J]. Transport in porous media, 2012, 92(1): 213-235.
Nie R, Meng Y, Yang Z, et al. New flow model for the triple media carbonate reservoir [J]. International Journal of Computational Fluid Dynamics, 2011, 25(2): 95-104.
Gomez S, Camacho R, Vasquez M, et al. Well Test Characterization of Naturally Fractured Vuggy Reservoirs, with a Global Optimization Method [C]. OTC 24762, 2014.
Guo G., Evans R D. Pressure-transient behavior and inflow performance of horizontal wells intersecting discrete fractures [C]. SPE 26446, 1993.
Home R N, Temeng K O. Relative productivities and pressure transient modeling of horizontal wells with multiple fractures [C]. SPE 29891, 1995.
Zerzar A, Bettam Y. Interpretation of multiple hydraulically fractured horizontal wells in closed systems [C]. SPE 84888, 2003.
Li, S. S., D, Y. G., Chen, W, et al. Well Testing analysis of fractured horizontal well[J]. Petroleum Geology & Oil Field Development in Daqing, 2006, 25(3): 67-69.
Fang, D. Y., Yao, J., Wang, Z. S., et al. Well testing on fractured horizontal well with different dip angles [J]. Chinese Journal of Hydrodynamics, 2009,24(6):705-712.
Wang, C. B, Jia, Y. L., Li, Y. Q., et al. A new solution of well test model for multistage fractured horizontal wells[J]. Acta Petrplei Sinca, 2013, 34(6):1150-1156.
Chen F, Duan Y, Wang K, et al. A novel pressure transient response model considering multiple migration mechanisms in shale gas reservoir[J]. Journal of Natural Gas Science and Engineering, 2015, 22: 321-334
Ozkan E, Raghavan R. New solutions for well-test-analysis problems: Part 1-analytical considerations (includes associated papers 28666 and 29213) [J]. SPE Formation Evaluation, 1991, 6(03): 359-368.
Ozkan E, Raghavan R. New solutions for well-test-analysis problems: Part 2 computational considerations and applications [J]. SPE Formation Evaluation, 1991, 6(03): 369-378.
Cinco-Ley H, Meng H Z. Pressure transient analysis of wells with finite conductivity vertical fractures in double porosity reservoirs[C]. SPE 18172, 1988.
Van Everdingen, A. F., Hurst, W., 1949. The application of the laplace transformation to flow problems in reservoir. Trans. AIME 186, 305.
Stehfest, H. Numerical inversion of Laplace transform-algorithm 368. Commun [M]. ACM, 1970, 13 (1): 47–49.