Calculation of Perforated Vertical and Horizontal Well Productivity in Low-Permeability Reservoirs
- Minglu Wu (Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education) | Jiamin Zhu (Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education) | Longlong Li (Hamad Bin Khalifa University) | Pengguang Li (Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- June 2020
- Document Type
- Journal Paper
- 218 - 236
- 2020.Society of Petroleum Engineers
- disturbing elliptical flow, low permeability, three radial, dual radial, perforated well productivity
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- 104 since 2007
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This paper presents the productivity formulas of a perforated vertical well on the basis of the dual-radial-flow model and then presents the productivity formulas of horizontal wells on the basis of disturbing elliptical flow theory. The threshold pressure gradient (TPG) is used to characterize the seepage characteristics of low-permeability reservoirs. By combing the above formulas, the authors proposed the productivity formulas of perforated horizontal wells in a low-permeability reservoir on the basis of the triple-radial-flow model. The formulas are derived considering the cases of the damaged zone being penetrated and being partially penetrated. At the same time, the flow patterns of single-phase flow and oil/water two-phase flows are considered. Sensitivity analysis on the performance of the perforated well shows that the productivity increases with the increase of the length of the horizontal well, penetration depth, shot density, perforation diameter, and phasing, and it decreases with the increase of TPG, compaction thickness, and crush degree of the crushed zone; the influence of the length of the horizontal well, TPG, penetration depth, shot density, compaction degree, phasing, perforation diameter, and compaction thickness on the productivity is in descending order.
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Asadi, M. and Preston, F. W. 1994. Characterization of the Jet Perforation Crushed Zone by SEM and Image Analysis. SPE Form Eval 9 (2): 135–139. SPE-22812-PA. https://doi.org/10.2118/22812-PA.
Borisov, J. P. 1984. Oil Production Using Horizontal and Multiple Deviation Wells. Nedra, Moscow, Russia: Philips Petroleum Company.
Ge, J. 2002. Principles of Seepage Mechanics in Modern Reservoir, 1–200. Beijing, China: Petroleum Engineering Industry Press.
Harris, M. H. 1996. The Effect of Perforating Oil Well Productivity. J Pet Technol 18 (4): 518–528. SPE-1236-PA. https://doi.org/10.2118/1236-PA.
Joshi, S. D. 1987. A Review of Horizontal Well and Drainhole Technology. Paper presented at the SPE Annual Technical Conference and Exhibition, Dallas Texas, USA, 27–30 September. SPE-16868-MS. https://doi.org/10.2118/16868-MS.
Joshi, S. D. 1988. Augmentation of Well Productivity with Slant and Horizontal Wells. J Pet Technol 40 (6): 729–739. SPE-15375-PA. https://doi.org/10.2118/15375-MS.
Karakas, M. and Tariq, S. M. 1991. Semianalytical Productivity Models for Perforated Completions. SPE Res Eng 6 (1): 1–5. SPE-18247-PA. https://doi.org/10.2118/18247-PA.
Klotz, J. A. and Krueger, R. F. 1974. Effect of Perforation Damage on Well Productivity. J Pet Technol 26 (11): 1303–1314. SPE-4654-PA. https://doi.org/10.2118/4654-PA.
Lang, Z., Zhang, L., Zhu, J. et al. 1992. Development of Well Perforation Engineering Software WPSYS-A. J Univ Pet 16 (6): 42–48.
Lei, Q., Xiong, W., Yuan, J. et al. 2008. Behavior of Flow Through Low-Permeability Reservoirs. Paper presented at the SPE Europec/EAGE Annual Conference and Exhibition, Rome, Italy, 9–12 June. SPE-113144-MS. https://doi.org/10.2118/113144-MS.
Li, D., Tang, G., Sun, X. et al. 2000. A Study on Perforation Crushed-Zone. Pet Explor Dev 27 (5): 112–114.
Locke, S. 1981. An Advanced Method for Predicting the Productivity Ratio of a Perforated Well. J Pet Technol 33 (12): 2481–2488. SPE-8804-PA. https://doi.org/10.2118/8804-PA.
McLeod, J. and Harry, O. 1983. The Effect of Perforating Conditions on Well Performance. J Pet Technol 35 (1): 21–29. SPE-10649-PA. https://doi.org/10.2118/10649-PA.
Pucknell, J. K. and Berhmann, L. A. 1991. An Investigation of the Damaged Zone Created by Perforating. Paper presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, USA, 6–9 October. SPE-22811-MS. https://doi.org/10.2118/22811-MS.
Song, F. and Liu, C. 1999. Two-Phase Seepage Analysis of Reservoirs with Threshold Pressure Gradient. J China Univ Pet 23 (3): 48–51. https://doi.org/10.3321/j.issn:1000-5870.1999.03.013.
Tariq, S. M. 1987. Evaluation of Flow Characteristics of Perforations Including Nonlinear Effects with the Finite-Element Method. SPE Res Eng 2 (2): 104–112. SPE-12781-PA. https://doi.org/10.2118/12781-PA.
Thomas, L. K., Katz, D. L., and Tek, M. R. 1968. Threshold Pressure Phenomena in Porous Media. SPE J. 8 (2): 174–184. SPE-1816-PA. https://doi.org/10.2118/1816-PA.
Tiab, D. and Donaldson, E. C. 2004. Petrophysics, Chap. 10. Houston, Texas, USA: Gulf Publishing Co.
Xiong, W., Lei, Q., Liu, X. et al. 2009. Pseudo Threshold Pressure Gradient to Flow for Low Permeability Reservoirs. Pet Explor Dev 36 (2): 232–236. https://doi.org/10.1016/S1876-3804(09)60123-3.
Xu, S. and Yue, X. 2007. Experimental Research on Nonlinear Flow Characteristics at Low Velocity. J China Univ Pet 31 (2): 60–63. https://doi.org/10.3321/j.issn:1000-5870.2007.05.013.
Zeng, B., Cheng, L., and Li, C. 2012. Low Velocity Non-Linear Flow in Ultra-Low Permeability Reservoir. J Pet Sci Eng 80 (1): 1–6. https://doi.org/10.1016/j.petrol.2011.10.006.