A new model for calculating permeability of natural fractures in dual-porosity reservoir
Abstract view|827|times PDF download|281|times
Abstract
During the development of naturally fractured carbonate reservoirs, understanding the change in fracture permeability is the basis for production evaluation and scientific development. The conventional method of analyzing fracture permeability is to take core samples for laboratory experiments. This paper presents a new method to calculate the fracture permeability decrease using actual reservoir pressure data. The mathematical model of fracture permeability change with pressure is established based on material balance in the production process of a fractured reservoir. The model considers crossflow coefficient as well as compression coefficient. According to the results of the model, the fracture permeability decreases with decrease of the formation pressure, but the degree of decline is related to the crossflow coefficient and the compression coefficient. By using this model, the change in fracture permeability can be calculated under different production pressures. This provides a new method for stress sensitivity determination of fractured reservoirs.
Cited as: Zhang, T., Li, Z., Adenutsi, C.D., et al. A new model for calculating permeability of natural fractures in dual-porosity reservoir. Advances in Geo-Energy Research, 2017, 1(2): 86-92, doi: 10.26804/ager.2017.02.03
Keywords
Full Text:
PDFReferences
Abass, H.H., Ortiz, I., Khan, M.R., et al. Understanding stress dependant permeability of matrix, natural fractures, and hydraulic fractures in carbonate formations. Paper SPE 110973 Presented at the SPE Saudi Arabia Section Technical Symposium, Dhahran, Saudi Arabia, 7-8 May, 2007.
Archer, R.A. Impact of stress sensitive permeability on production data analysis. Paper SPE 114166 Presented at the SPE Unconventional Reservoirs Conference, Keystone, Colorado, USA, 10-12 February, 2008.
Buchsteiner, H., Warpinski, N.R., Economides, M.J. Stress-induced permeability reduction in fissured reservoirs. Paper SPE 26513 Presented at the SPE Annual Technical Conference and Exhibition, Houston, Texas, 3-6 October, 1993.
Cho, Y., Ozkan, E., Apaydin, O.G. Pressure-dependent natural-fracture permeability in shale and its effect on shale-gas well production. SPE Reserv. Eval. Eng. 2013, 16(2): 216-228.
Davies, J.P., Davies, D.K. Stress-dependent permeability: characterization and modeling. SPE J. 2001, 6(2): 224-335.
Duan, Y., Meng, Y., Luo, P., et al. Stress sensitivity of naturally fractured-porous reservoir with dual-porosity. Paper SPE 50909 Presented at the SPE International Oil and Gas Conference and Exhibition in China, Beijing, China, 2-6 November, 1998.
Fatt, I., Davis, D.H. Reduction in permeability with overburden pressure. J. Pet. Technol. 1952, 4(12): 16.
Guo, J., Zhang, L., Tu, Z. Stress sensitivity and influence on productivity in gas reservoirs with abnormally high pressure. SPE Oil Gas Reserv. 2010, 17(2): 79-81.
Halbouty, M.T. Giant oil and gas fields of the decade 1990-1999. Gsw Books 2003, 78(26): 9635-9643.
Jelmert, T.A., Selseng, H. Permeability function describes core permeability in stress-sensitive rocks. Oil Gas J. 1998, 96(49): 60-63.
Jones, F.O. A laboratory study of the effects of confining pressure on fracture flow and storage capacity in carbonate rocks: 8F, 22R. J. Petroleum Tech. V27, Jan. 1975, P21-27. Int. J. Rock Mech. Min. Sci. Geomech. Abstracts 1975, 12(4): 55.
Jones, F.O., Owens, W.W. A laboratory study of low-permeability gas sands. J. Pet. Technol. 1980, 2(9): 1631-1640.
Khan, M., Teufel, L.W. The effect of geological and geomechanical parameters on reservoir stress path and its importance in studying permeability anisotropy. SPE Reserv. Eval. Eng. 2000, 3(5): 394-400.
Lei, Q., Xiong, W., Yuan, C., et al. Analysis of stress sensitivity and its influence on oil production from tight reservoirs. Paper SPE 111148 Presented at the SPE Eastern Regional Meeting, Lexington, Kentucky, USA, 17-19 October, 2007.
Li, C. Evaluation method for stress sensitivity of reservoir rock. Petroleum Geology & Oilfield Development in Daqing 2006, 25(1): 40-42. (in Chinese)
Li, C. A theoretical formula of stress sensitivity index with compressibility of rock. Lithologic Reservoirs 2007, 19(4): 95-98. (in Chinese)
Lorenz, J.C. Stress-sensitive reservoirs. J. Pet. Technol. 1999, 51(1): 61-63.
Mckee, C.R., Bumb, A.C., Koenig, R.A. Stress-dependent permeability and porosity of coal. SPE Form. Eval. 1988, 3(1): 81-91.
Muralidharan, V., Putra, E., Schechter, D. Experimental and simulation analysis of fractured reservoir experiencing different stress conditions. Paper PETSOC2004229 Presented at the Canadian International Petroleum Conference, Calgary, Alberta, 8-10 June, 2004.
Palmer, I., Mansoori, J. How permeability depends on stress and pore pressure in coalbeds: A new model. SPE Reserv. Eval. Eng. 1996, 1(6): 539-544.
Petunin, V., Yin, X., Tutuncu, A.N. Porosity and permeability changes in sandstones and carbonates under stress and their correlation to rock texture. Paper SPE 147401 Presented at the SPE Canadian Unconventional Resources Conference, Calgary, Alberta, Canada, 15-17 November, 2011.
Qiao, L.P., Wong, R.C.K., Aguilera, R., et al. Determination of Biot’s effective stress parameter for permeability of Nikanassin sandstone. J. Can. Pet. Technol. 2012, 51(3): 193-197.
Raghavan, R., Chin, L.Y. Productivity changes in reservoirs with stress-dependent permeability. SPE Reserv. Eval. Eng. 2002, 7(4): 308-315.
Randolph, P.L., Soeder, D.J., Chowdiah, P. Porosity and permeability of tight sands. Powder Technol. 1984, 41(2): 159-164.
Roehl, P.O., Choquette, P.W. Carbonate Petroleum Reservoirs. Berlin, German, Springer-Verlag, 1985.
Shu, Y., Yan, J. Stress sensiivity evalution and protection techniques of low permeability fractured carbonate reservoirs: A case study of the Ordovician in the Tarim Basin, Qianshan. Petroleum Geology & Experiment 2009, 21(2): 124-126. (in Chinese)
Thomas, R., Ward, D.C. Effect of overburden pressure and water saturation on gas permeability of tight sandstone cores. J. Pet. Technol. 1972, 24(2): 120-124.
Tian, Y. Experimental study on stress sensitivity of naturally fractured reservoirs. Paper SPE 173463 Presented at the SPE Annual Technical Conference and Exhibition, Amsterdam, The Netherlands, 27-29 October, 2014.
Walsh, J.B. Effect of pore pressure and confining pressure on fracture permeability. Int. J. Rock Mech. Min. Sci. Geomech. Abstracts 1981, 18(5): 429-435.
Xiang, Y., Xiang, D., Huang, D.Z. Simulation experimental study on stress sensitivity of fractured porous dual media. Petroleum Geology & Experiment 2003, 25(5): 497-498. (in Chinese)
Refbacks
- There are currently no refbacks.
Copyright (c) 2017 The Author(s)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.