Influence of Pressure Difference Between Reservoir and Production Well on Steam-Chamber Propagation and Reservoir-Production Performance
- Hao Xiong (University of Oklahoma) | Shijun Huang (China University of Petroleum, Beijing) | Deepak Devegowda (University of Oklahoma) | Hao Liu (China University of Petroleum, Beijing) | Hao Li (University of Oklahoma) | Zack Padgett (Univiersity of Oklahoma)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- April 2019
- Document Type
- Journal Paper
- 452 - 476
- 2019.Society of Petroleum Engineers
- Heavy Oil, Steam Chamber, SAGD, Thermal Recovery, Pressure Difference
- 9 in the last 30 days
- 156 since 2007
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Steam-assisted gravity drainage (SAGD) is the most-effective thermal recovery method to exploit oil sand. The driving force of gravity is generally acknowledged as the most-significant driving mechanism in the SAGD process. However, an increasing number of field cases have shown that pressure difference might play an important role in the process. The objective of this paper is to simulate the effects of injector/producer-pressure difference on steam-chamber evolution and SAGD production performance.
A series of 2D numerical simulations was conducted using the MacKay River and Dover reservoirs in western Canada to investigate the influence of pressure difference on SAGD recovery. Meanwhile, the effects of pressure difference on oil-production rate, stable production time, and steam-chamber development were studied in detail. Moreover, by combining Darcy’s law and heat conduction along with a mass balance in the reservoir, a modified mathematical model considering the effects of pressure difference is established to predict the SAGD production performance. Finally, the proposed model is validated by comparing calculated cumulative oil production and oil-production rate with the results from numerical and experimental simulations.
The results indicate that the oil production first increases rapidly and then slows down when a certain pressure difference is reached. The pressure difference has strong effects on steam-chamber-rising/expansion stages. However, at the expansion stage, lower pressure difference can achieve the same effect as high pressure difference. In addition, it is shown that the steam-chamber-expansion angle is a function of pressure difference. Using this finding, a new mathematical model is established considering the modification of the expansion angle, which (Butler 1991) treated as a constant. With the proposed model, production performance such as cumulative oil production and oil-production rate can be predicted. The steam-chamber shape is redefined at the rising stage, changing from a fan-like shape to a hexagonal shape, but not the single fan-like shape defined by (Butler 1991). This shape redefinition can clearly explain why the greatest oil-production rate does not occur when the steam chamber reaches the caprock.
Literature surveys show few studies on how pressure difference influences steam-chamber development and SAGD recovery. The current paper provides a modified SAGD production model and an entirely new scope for SAGD enhanced oil recovery (EOR) that makes the pressure difference a new optimizable factor in the field.
|File Size||3 MB||Number of Pages||25|
Adegbesan, K. O., Leaute, R. P., and Courtnage, D. E. 1991. Performance of a Thermal Horizontal Well Pilot. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, 6–9 October. SPE-22892-MS. https://doi.org/10.2118/22892-MS.
Augustine, J. R., McIntyre, A., Adam, R. J. et al. 2006. Increasing Oil Recovery by Preventing Early Water and Gas Breakthrough in a West Brae Horizontal Well: A Case History. Presented at the SPE/DOE Symposium on Improved Oil Recovery, Tulsa, 22–26 April. SPE-99718-MS. https://doi.org/10.2118/99718-MS.
Beggs, D. H. and Brill, J. P. 1973. A Study of Two-Phase Flow in Inclined Pipes. J Pet Technol 25 (5): 607–617. SPE-4007-PA. https://doi.org/10.2118/4007-PA.
Butler, R. 1998. SAGD Comes of AGE! J Can Pet Technol 37 (7): 9–12. PETSOC-98-07-DA. https://doi.org/10.2118/98-07-DA.
Butler, R. M. 1985. A New Approach to the Modelling of Steam-Assisted Gravity Drainage. J Can Pet Technol 24 (3): 42–51. PETSOC-85-03-01. https://doi.org/10.2118/85-03-01.
Butler, R. M. 1987. Rise of Interfering Steam Chambers. J Can Pet Technol 26 (3): 70–75. PETSOC-87-03-07. https://doi.org/10.2118/87-03-07.
Butler, R. M. 1991. Thermal Recovery of Oil and Bitumen. Upper Saddle River, New Jersey: Prentice Hall.
Butler, R. M. 2001. Some Recent Developments in SAGD. J Can Pet Technol 40 (1): 18–22. PETSOC-01-01-DAS. https://doi.org/10.2118/01-01-DAS.
Butler, R. M. and Stephens, D. J. 1981. The Gravity Drainage of Steam-Heated Heavy Oil to Parallel Horizontal Wells. J Can Pet Technol 20 (2): 90–96. PETSOC-81-02-07. https://doi.org/10.2118/81-02-07.
Butler, R. M., Mcnab, G. S., and Lo, H. Y. 1981. Theoretical Studies on the Gravity Drainage of Heavy Oil During In-Situ Steam Heating. Can. J. Chem. Eng. 59 (4): 455–460. https://doi.org/10.1002/cjce.5450590407.
Butler, R. M., Stephens, D. J., and Weiss, M. 1980. The Vertical Growth of Steam Chambers in the In-Situ Thermal Recovery of Heavy Oils. Proc., 30th Canadian Chemical Engineering Conference, Edmonton, Alberta, Canada, 19–22 October, Vol. 4, 1152–1167.
Chen, Y. 2015. Question of SAGD Production Rate Formula for Butler’s Double Horizontal Wells. Fault-Block Oil Gas Field 22 (4): 472–475.
Computer Modelling Group (CMG). 2010. STARS User Manual. Calgary: Computer Modelling Group.
Edmunds, N. 1999. On the Difficult Birth of SAGD. J Can Pet Technol 38 (1): 14–15. PETSOC-99-01-DA. https://doi.org/10.2118/99-01-DA.
Edmunds, N. 2000. Investigation of SAGD Steam Trap Control in Two and Three Dimensions. J Can Pet Technol 39 (1): 30–40. PETSOC-00-01-02. https://doi.org/10.2118/00-01-02.
Farouq Ali, S. M. 1997. Is There Life After SAGD? J Can Pet Technol 36 (6): 20–24. PETSOC-97-06-DAS. https://doi.org/10.2118/97-06-DAS.
Hasan, A. R. 1995. Void Fraction in Bubbly and Slug Flow in Downward Two-Phase Flow in Vertical and Inclined Wellbores. SPE Prod & Fac 10 (3): 172–176. SPE-26522-PA. https://doi.org/10.2118/26522-PA.
Hasan, A. R., Kabir, C. S., and Sayarpour, M. 2007. A Basic Approach to Wellbore Two-Phase Flow Modeling. Presented at the SPE Annual Technical Conference and Exhibition, Anaheim, California, 11–14 November. SPE-109868-MS. https://doi.org/10.2118/109868-MS.
Henriksen, K. H., Gule, E.I., and Augustine, J. R. 2006. Case Study: The Application of Inflow Control Devices in the Troll Oil Field. Presented at the SPE Europec/EAGE Annual Conference and Exhibition, Vienna, Austria, 12–15 June. SPE-100308-MS. https://doi.org/10.2118/100308-MS.
Huang, S., Liu, H., Cheng, L. et al. 2017a. The Relationship of Liquid Level and Subcool Between Injector and Producer During SAGD Process. J. Pet. Sci. Eng. 153 (May): 364–371. https://doi.org/10.1016/j.petrol.2017.03.025.
Huang, S., Liu, H., Xue, Y. et al. 2017b. Performance Prediction of Solvent Enhanced Steam Flooding for Recovery of Thin Heavy Oil Reservoirs. Presented at the SPE Canada Heavy Oil Technical Conference, Calgary, 15–16 February. SPE-184962-MS. https://doi.org/10.2118/184962-MS.
Huang, S., Hao, X., Ma, K. et al. 2017c. A Mathematical Model for Productivity Prediction of SAGD Process Considering Non-Uniform Steam Distribution. J. China Univ. Petrol. 41 (4): 107–115. https://doi.org/10.3969/j.issn.1673-5005.2017.04.014.
Huang, S., Xia, Y., Xiong, H. et al. 2018. A Three-Dimensional Approach to Model Steam Chamber Expansion and Production Performance of SAGD Process. Int. J. Heat Mass Tran. 127A (December): 29–38. https://doi.org/10.1016/j.ijheatmasstransfer.2018.06.136.
Huang, S., Xiong, H., Wei, S. et al. 2016. Physical Simulation of the Interlayer Effect on SAGD Production in Mackay River Oil Sands. Fuel 183 (1 November): 373–385. https://doi.org/10.1016/j.fuel.2016.06.104.
Ito, Y. and Suzuki, S. 1999. Numerical Simulation of the SAGD Process in the Hangingstone Oil Sands Reservoir. J Can Pet Technol 38 (9): 27–35. PETSOC-99-09-02. https://doi.org/10.2118/99-09-02.
Ji, D., Zhong, H., Dong, M. et al. 2016. A Model to Estimate Heat Efficiency in Steam-Assisted Gravity Drainage by Condensate and Initial Water Flow in Oil Sands. Ind. Eng. Chem. Res. 55 (51): 13147–13156. https://doi.org/10.1021/acs.iecr.6b03550.
Kamari, A., Moeini, F., Shamsoddini-Moghadam, M.-J. et al. 2016. Modeling the Permeability of Heterogeneous Oil Reservoirs Using a Robust Method. Geosci. J. 20 (2): 259–271. https://doi.org/10.1007/s12303-015-0033-2.
Kaya, A. S., Sarica, C., and Brill, J. P. 2001. Mechanistic Modeling of Two-Phase Flow in Deviated Wells. SPE Prod & Fac 16 (3): 156–65. SPE-72998-PA. https://doi.org/10.2118/72998-PA.
Keshavarz, M., Okuno, R., and Babadagli, T. 2015. A Semi-Analytical Solution to Optimize Single-Component Solvent Coinjection With Steam During SAGD. Fuel 144 (15 March): 400–414. https://doi.org/10.1016/j.fuel.2014.12.030.
Kisman, K. E. 2003. Artificial Lift—A Major Unresolved Issue for SAGD. J Can Pet Technol 42 (8): 39–45. PETSOC-03-08-02. https://doi.org/10.2118/03-08-02.
Least, B., Bonner, A. J., Regulacion, R. E. et al. 2013. Autonomous ICD Installation Success in Ecuador Heavy Oil: A Case Study. Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 30 September–2 October. SPE-166495-MS. https://doi.org/10.2118/166495-MS.
Leyva-Gomez, H. and Babadagli, T. 2017. High-Temperature Solvent Injection for Heavy-Oil Recovery From Oil Sands: Determination of Optimal Application Conditions Through Genetic Algorithm. SPE Res Eval & Eng 20 (2): 372–382. SPE-183638-PA. https://doi.org/10.2118/183638-PA.
Liu, H., Cheng, L., Xiong, H. et al. 2016. The Effects of Injector-Producer Pressure Difference on Dual-Well SAGD Recovery. Petrol. Sci. Bull. 1 (3): 363–375. https://doi.org/10.3969/j.issn.2096-1693.2016.03.031.
Liu, H., Cheng, L., Xiong, H. et al. 2017a. Effects of Solvent Properties and Injection Strategies on Solvent-Enhanced Steam Flooding for Thin Heavy Oil Reservoirs With Semi-Analytical Approach. Oil Gas Sci. Technol. 72 (4): 20–33. https://doi.org/10.2516/ogst/2017015.
Liu, H., Cheng, L., Li, C. et al. 2017b. An Investigation Into Temperature Distribution and Heat Loss Rate Within the Steam Chamber in Expanding-Solvent SAGD Process. Presented at the SPE Canada Heavy Oil Technical Conference, Calgary, 15–16 February. SPE-184963-MS. https://doi.org/10.2118/184963-MS.
Liu, H., Cheng, L., Huang, S. et al. 2018a. Heat and Mass Transfer Characteristics of Superheated Fluid for Hybrid Solvent-Steam Process in Perforated Horizontal Wellbores. Int. J. Heat Mass. Tran. 122 (July): 557–573. https://doi.org/10.1016/j.ijheatmasstransfer.2018.02.005.
Liu, H., Cheng, L., Wu, K. et al. 2018b. Performance of Solvent-Assisted Thermal Drainage Process and Its Relationship to Injection Parameters: A Comprehensive Modeling. Fuel 225 (1 August): 388–402. https://doi.org/10.1016/j.fuel.2018.03.071.
Liu, Z., Cheng, L., Ji, Y. et al. 2011. Production Features of Steam and Gas Push: Comparative Analysis With Steam Assisted Gravity Drainage. Petrol. Explor. Develop. 38 (1): 79–83. https://doi.org/10.1016/S1876-3804(11)60016-5.
Lorenz, M. D., Ratterman, E. E., and Augustine, J. R. 2006. Uniform Inflow Completion System Extends Economic Field Life: A Field Case Study and Technology Overview. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24–27 September. SPE-101895-MS. https://doi.org/10.2118/101895-MS.
Lu, T., Li, Z.-M., Sun, X.-.N. et al. 2014. Characterization of Foam Assisted SAGD Process. J. China Univ. Petrol. 38 (3): 93–98. https://doi.org/10.3969/j.issn.1673-5005.2014.03.015.
Lyngra, S., Hembling, D. E., Al-Otaibi, U. F. et al. 2007. A Case Study of the Application of Slim Hole Passive Inflow Control Devices to Revive Wells With Tubular Limitations in a Mature Field. Presented at the SPE Middle East Oil and Gas Show and Conference, Manama, Bahrain, 11–14 March. SPE-105624-MS. https://doi.org/10.2118/105624-MS.
Ma, D., Guo, J., Zan, C. et al. 2013. Physical Simulation of Improving the Uniformity of Steam Chamber Growth in the Steam Assisted Gravity Drainage. Petrol. Explor. Develop. 40 (2): 188–193. https://doi.org/10.1016/S1876-3804(13)60023-3.
Martinius, A. W., Fustic, M., Garner, D. L. et al. 2017. Reservoir Characterization and Multiscale Heterogeneity Modeling of Inclined Heterolithic Strata for Bitumen-Production Forecasting, McMurray Formation, Corner, Alberta, Canada. Mar. Petrol. Geol. 82 (April): 336–361. https://doi.org/10.1016/j.marpetgeo.2017.02.003.
Masihi, M., Gago, P. A., and King, P. R. 2016. Estimation of the Effective Permeability of Heterogeneous Porous Media by Using Percolation Concepts. Transport Porous Med. 114 (1): 169–199. https://doi.org/10.1007/s11242-016-0732-9.
Morozov, P., Abdullin, A., and Khairullin, M. 2018. An Analytical Model of SAGD Process Considering the Effect of Threshold Pressure Gradient. Proc., IOP Conference Series: Earth and Environmental Science, Thermal Methods for Enhanced Oil Recovery: Laboratory Testing, Simulation and Oilfields Applications, Kazan, Tatarstan, 19–23 June, Vol. 155, 012001. https://doi.org/10.1088/1755-1315/155/1/012001.
Mozaffari, S., Nikookar, M., Ehsani, M. R. et al. 2013. Numerical Modeling of Steam Injection in Heavy Oil Reservoirs. Fuel 112 (October): 185–192. https://doi.org/10.1016/j.fuel.2013.04.084.
Ni, X.-F., Cheng, L.-S., Li, C.-L. et al. 2005. New Model for the Steam Properties in Steam Injection Wells. China J. Computat. Phys. 22 (3): 251–255.
Nukhaev, M. T., Pimenov, V. P., Shandrygin, A. et al. 2006. A New Analytical Model for the SAGD Production Phase. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24–27 September. SPE-102084-MS. https://doi.org/10.2118/102084-MS.
Nwachukwu, A., Jeong, H., Pyrcz, M. et al. 2018. Fast Evaluation of Well Placements in Heterogeneous Reservoir Models Using Machine Learning. J. Pet. Sci. Eng. 163 (April): 463–475. https://doi.org/10.1016/j.petrol.2018.01.019.
Orkiszewski, J. 1967. Predicting Two-Phase Pressure Drops in Vertical Pipe. J Pet Technol 19 (6): 829–838. SPE-1546-PA. https://doi.org/10.2118/1546-PA.
Reis, J. C. 1992. A Steam-Assisted Gravity Drainage Model for Tar Sands: Linear Geometry. J Can Pet Technol 31 (10): 14–20. PETSOC-92-10-01. https://doi.org/10.2118/92-10-01.
Shahandeh, H., Rahim, S., and Li, Z. 2016. Strategic Optimization of the Oil Sands Development With SAGD: Drainage Area Arrangement and Development Planning. J. Pet. Sci. Eng. 137 (January): 172–184. https://doi.org/10.1016/j.petrol.2015.11.023.
Shi, X. and Okuno, R. 2018. Analytical Solution for Steam-Assisted Gravity Drainage With Consideration of Temperature Variation Along the Edge of a Steam Chamber. Fuel 217 (1 April): 262–274. https://doi.org/10.1016/j.fuel.2017.12.110.
Sun, F., Yao, Y., Chen, M. et al. 2017. Performance Analysis of Superheated Steam Injection for Heavy Oil Recovery and Modeling of Wellbore Heat Efficiency. Energy 125 (15 April): 795–804. https://doi.org/10.1016/j.energy.2017.02.114.
Sun, F., Yao, Y., and Li, X. 2018. The Heat and Mass Transfer Characteristics of Superheated Steam Coupled With Non-Condensing Gases in Horizontal Wells With Multi-Point Injection Technique. Energy 143 (15 January): 995–1005. https://doi.org/10.1016/j.energy.2017.11.028.
Sun, X. G., He, W.-J., Hu, X.-B. et al. 2012. Parameters Optimization of Different Production Stages by Dual-Horizontal Well SAGD Process for Super-Heavy Oil Reservoir. Xinjiang Petrol. Geol. 33 (6): 697–699.
The MathWorks Inc. 2018. Global Optimization Toolbox: User’s Guide (r2018b). www.mathworks.com/help/pdf_doc/gads/gads_tb.pdf (accessed 10 November 2018).
Vela, I., Viloria-Gomez, L. A., Caicedo, R. et al. 2011. Well Production Enhancement Results With Inflow Control Device (ICD) Completions in Horizontal Wells in Ecuador. Presented at the SPE EUROPEC/EAGE Annual Conference and Exhibition, Vienna, Austria, 23–26 May. SPE-143431-MS. https://doi.org/10.2118/143431-MS.
Wei, S., Cheng, L., Huang, W. et al. 2014. Prediction for Steam Chamber Development and Production Performance in SAGD Process. J. Nat. Gas Sci. Eng. 19 (7): 303–310. https://doi.org/10.1016/j.jngse.2014.05.021.
Wei, S., Cheng, L., Huang, W. et al. 2015. Production Performance Prediction During Steam Assisted Gravity Drainage Process in Anisotropic Reservoirs. Int. J. Oil Gas Coal Technol. 9 (1): 14–38. https://doi.org/10.1504/IJOGCT.2015.066952.
Xiong, H., Huang, S., Liu, H. et al. 2017a. A Novel Optimization of SAGD to Enhance Oil Recovery—The Effects of Pressure Difference. Presented at IOR 2017, European Symposium on Improved Oil Recovery, Stavanger, Norway, 24–27 April. https://doi.org/10.3997/2214-4609.201700250.
Xiong, H., Huang, S., Liu, H. et al. 2017b. A Novel Model to Investigate the Effects of Injector-Producer Pressure Difference on SAGD for Bitumen Recovery. Int. J. Oil Gas Coal Technol. 16 (3): 217–235. https://doi.org/10.1504/IJOGCT.2017.087048.
Yang, Y., Huang, S., Liu, Y. et al. 2016. A Multistage Theoretical Model to Characterize the Liquid Level During Steam-Assisted-Gravity-Drainage Process. SPE J. 22 (1): 327–338. SPE-183630-PA. https://doi.org/10.2118/183630-PA.
Yuan, J.-Y. and Nugent, D. 2013. Sub-Cool, Fluid Productivity, and Liquid Level Above a SAGD Producer. J Can Pet Technol 52 (5): 360–367. SPE-157899-MS. https://doi.org/10.2118/157899-MS.
Zheng, Q., Liu, H., Zhang, B. et al. 2014. Identification of High Permeability Channels Along Horizontal Wellbore in Heterogeneous Reservoir With Bottom Water. J. Petrol. Explor. Prod. Technol. 4 (3): 309–314. https://doi.org/10.1007/s13202-013-0080-z.