Case Studies: Pressure-Transient Analysis for Water Injector with the Influence of Waterflood-Induced Fractures in Tight Reservoir
- Yang Wang (China University of Petroleum – Beijing and Pennsylvania State University) | Shiqing Cheng (China University of Petroleum – Beijing) | Kaidi Zhang (Lusheng Petroleum Development Co., Ltd, SINOPEC Shengli Oilfield Company) | Jianchun Xu (China University of Petroleum – East China) | Jiazheng Qin (China University of Petroleum – Beijing) | Youwei He (China University of Petroleum – Beijing and Texas A&M University) | Le Luo (China University of Petroleum – Beijing) | Haiyang Yu (China University of Petroleum – Beijing)
- Document ID
- Society of Petroleum Engineers
- SPE Improved Oil Recovery Conference, 14-18 April, Tulsa, Oklahoma, USA
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petroleum Engineers
- 2.4 Hydraulic Fracturing, 5.4.1 Waterflooding, 3 Production and Well Operations, 2 Well completion, 5.6.3 Pressure Transient Testing, 5.4 Improved and Enhanced Recovery, 3 Production and Well Operations, 5 Reservoir Desciption & Dynamics, 5.6 Formation Evaluation & Management
- radial composite reservoir, multiple closure, pressure-transient analysis, variable fracture properties, waterflood-induces fracture
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- 206 since 2007
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Pressure-transient analysis (PTA) of water injectors with waterflood-induced fractures (WIFs) is much more complicated than hydraulic fracturing producers due to the variation of fracture properties in the shutting time. In plenty of cases, current analysis techniques could result in misleading interpretations if the WIFs are not well realized or characterized. This paper presents a comprehensive analysis for five cases that focuses on the interpretation of different types of pressure responses in water injectors.
The characteristic of radial composite model of water injector indicates the water erosion and expansion of mini-fractures in the inner region. The commonplace phenomena of prolonged storage effect, bi-storage effect and interpreted considerably large storage coefficient suggest that WIF(s) may be induced by long time water injection. Based on this interpreted large storage coefficient, fracture half-length can be obtained. In the meanwhile, the fracture length shrinks and fracture conductivity decreases as the closing of WIF, which has a considerable influence on pressure responses. Results show that the upward of pressure derivative curve may not only be caused by closed outer boundary condition, but also the decreasing of fracture conductivity (DFC). As for multiple WIFs, they would close successively after shutting in the well due to the different stress conditions perpendicular to fracture walls, which behaves as several unit slopes on the pressure derivative curves in the log-log plot.
Aiming at different representative types of pressure responses cases in Huaqing reservoir, Changqing Oilfield, we innovatively analyze them from a different perspective and get a new understanding of water injector behaviors with WIF(s), which provides a guideline for the interpretation of water injection wells in tight reservoirs.
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Abbaszadeh, M., and Kamal, M. 1989. Pressure-Transient Testing of Water-Injection Wells. SPE Res Eng 4 (01): 115–124. SPE-16744-PA. https://doi.org/10.2118/16744-PA.
Alvarez, J. M. and Sawatzky, R. P. 2013. Waterflooding: Same Old, Same Old? Paper presented at SPE Heavy Oil Conference-Canada, Calgary, Alberta, 11-13 June. SPE-165406-MS. https://doi.org/10.2118/165406-MS.
Anand, A., and Subrahmanyam, S. G. V. 2014. Induced Fracture Modelling and Its Integration with Pressure Transient Analysis: Study for Shallow-water Offshore Field, South-East Asia - Part 1. Paper presented at Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, UAE, 10-13 November. SPE-171882-MS. http://dx.doi.org/10.2118/171882-MS.
Aniskin, A., Chmuzh, I., Sakhibgareev, R. R. 2010. Waterflood Induced Fracture Modeling in West Salym Field. Paper presented at SPE Russian Oil and Gas Conference and Exhibition, Moscow, 26-28 October. SPE-136560-MS. https://doi.org/10.2118/136560-MS.
Azeemuddin, M., Ghori, S. G., Saner, S., . 2002. Injection-Induced Hydraulic Fracturing in a Naturally Fractured Carbonate Reservoir: A Case Study from Saudi Arabia. Paper presented at International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, 20-21 February. SPE-73784-MS. https://doi.org/10.2118/73784-MS.
Baker, R., Dieva, R., Jobling, R., . 2016. The Myths of Waterfloods, EOR Floods and How to Optimize Real Injection Schemes. Paper presented at SPE Improved Oil Recovery Conference, Tulsa, Oklahoma, 11-13 April. SPE-179536-MS. https://doi.org/10.2118/179536-MS.
BinAkresh, S. A., and Rahman, N. M. A. 2015. Modeling Pressure-Transient Data for Characterizing the Formation Damage in Water Injection Wells Operating above the Fracturing Pressure. Paper presented at SPE European Formation Damage Conference and Exhibition, Budapest, Hungary, 3-5 June. SPE-174278-MS. https://doi.org/10.2118/174278-MS.
Craig, D. P., and Blasingame, T. A. 2005. A New Refracture-Candidate Diagnostic Test Determines Reservoir Properties and Identifies Existing Conductive or Damaged Fractures. Paper presented at SPE Annual Technical Conference and Exhibition, Dallas, Texas, 9-12 October. SPE-96785-MS. https://doi.org/10.2118/96785-MS.
Craig, D. P., and Blasingame, T. A. 2006. Application of a New Fracture-Injection/Falloff Model Accounting for Propagating, Dilated, and Closing Hydraulic Fractures. Paper presented at SPE Gas Technology Symposium, Calgary, Alberta, Canada, 15-17 May. SPE-100578-MS. https://doi.org/10.2118/100578-MS.
Fan, T., Wu, S., Zhang, X.. 2015. A Novel Dynamic Model to Simulate Waterflood Induced Fractures in Low Permeability Reservoirs. Paper presented at SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition, Nusa, 20-22 October. SPE-176224-MS. http://dx.doi.org/10.2118/176224-MS.
Gadde, P. B. and Sharma, M. M. 2001. Growing Injection Well Fractures and Their Impact on Waterflood Performance. Paper presented at SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, 30 September-3 October. SPE-71614-MS. https://doi.org/10.2118/71614-MS.
Griffin, L. G., Wright, C. A., Demetrius, C. A., . 2000. Identification and Implications of Induced Hydraulic Fractures in Waterfloods: Case History HGEU. Paper presented at SPE Permian Basin Oil and Gas Recovery Conference, Midland, Texas, 21-23 March. SPE-59525-MS. https://doi.org/10.2118/59525-MS.
He, Y., Cheng, S., Li, L.. 2017a. Waterflood Direction and Front Characterization With Four-Step Work Flow: A Case Study in Changqing Oil field, China. SPE Res Eval & Eng 20 (3): 708–725. SPE-178053-PA. http://dx.doi.org/10.2118/178053-PA.
He, Y., Cheng, S., Li, S.. 2017b. A Semianalytical Methodology To Diagnose the Locations of Underperforming Hydraulic Fractures Through Pressure-Transient Analysis in Tight Gas Reservoir. SPE J. 22 (3): 924–939. SPE-185166-PA. http://dx.doi.org/10.2118/185166-PA.
Heffer, K. J., Fox, R. J., McGill, C. A., . 1997. Novel Techniques Show Links between Reservoir Flow Directionality, Earth Stress, Fault Structure and Geomechanical Changes in Mature Waterfloods. SPE J 2 (02): 91–98. SPE-30711-PA. https://doi.org/10.2118/30711-PA.
Hustedt, B., Zwarts, D., Bjoerndal, H. P. 2006. Induced Fracturing in Reservoir Simulations: Application of a New Coupled Simulator to Waterflooding Field Examples. Paper presented at SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24-27 September. SPE-102467-MS. https://doi.org/10.2118/102467-MS.
Hustedt, B., and Snippe, J. 2010. Integrated Data Analysis and Dynamic Fracture Modeling Key To Understanding Complex Waterfloods: Case Study of the Pierce Field, North Sea. SPE Res Eval & Eng 13 (01): 82–94. SPE-132440-PA. https://doi.org/10.2118/132440-PA.
Izgec, B., and Kabir, C. S. 2009. Real-Time Performance Analysis of Water-Injection Wells. SPE Res Eval & Eng 12 (01): 116–123. SPE-109876-PA. https://doi.org/10.2118/109876-PA.
Kazemi, H., Merrill, L. S., and Jargon, J. R. 1972. Problems in Interpretation of Pressure Fall-Off Tests in Reservoirs With And Without Fluid Banks. J Pet Technol 24 (09): 1147–1156. SPE-3696-PA. https://doi.org/10.2118/3696-PA.
Larsen, L., and Bratvold, R. B. 1994. Effects of Propagating Fractures on Pressure-Transient Injection and Falloff Data. SPE Form Eval 9 (2): 105–114. https://doi.org/10.2118/20580-PA.
Lei, Z., Li, J., and Tang, H. 2017. Coupled Geomechanics And Flow Simulation For Water Injection Induced Fracture Propagation in Tight Reservoirs During Waterflood Process. Paper presented at SPE Reservoir Characterization and Simulation Conference and Exhibition, Abu Dhabi, 8–10 May. SPE-186009-MS. https://doi.org/10.2118/186009-MS.
Liu G. and Economides. C. E. 2015. Comprehensive Global Model for Before-Closure Analysis of an Injection Falloff Fracture Calibration Test. Paper presented at SPE Annual Technical Conference and Exhibition, Houston, Texas, 28-30 September. SPE-174906-MS. http://dx.doi.org/10.2118/174906-MS.
McClure, M. W., Jung, Hojung, Cramer, D.D., . 2016. The Fracture-Compliance Method for Picking Closure Pressure from Diagnostic Fracture-Injection Tests. SPE J 21 (04): 1321–1339. SPE-179725-PA. http://dx.doi.org/10.2118/179725-PA.
Morales, R. H., Abou-Sayer, A. S., Jones, A. H., . 1986. Detection of a Formation Fracture in a Waterflooding Experiment. J Pet Technol 38 (10): 1113–1121. https://doi.org/10.2118/13747-PA.
Morse, J. V., and lll, F. O. 1967. Field Application of Unsteady-State Pressure Analyses In Reservoir Diagnosis. J Pet Technol 19 (07): 869–876. SPE-1514-PA. https://doi.org/10.2118/1514-PA.
Nolte, K. 1979. Determination of Fracture Parameters from Fracturing Pressure Decline. Paper presented at the SPE Annual Technical Conference and Exhibition, Las Vegas, Nevada, 23–26 September. SPE-8341-MS. http://dx.doi.org/10.2118/8341-MS.
Nolte, K. G. 1986. A General Analysis of Fracturing Pressure Decline with Application to Three Models. SPE Form Eval 6 (1): 571–583. SPE-12941-PA. http://dx.doi.org/10.2118/12941-PA.
Ovens, J. E. V., Larsen, F. P., and Cowie, D. R. 1997. Making Sense of Water Injection Fractures in the Dan Field. Paper presented at SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 5-8 October. SPE-38928-MS. https://doi.org/10.2118/38928-MS.
Saeby, J., Bjorndal, H. P., and Van den Hoek, P. J. 2005. Managed Induced Fracturing Improves Waterflood Performance in South Oman. Paper presented at International Petroleum Technology Conference, Doha, Qatar, 21-23 November. IPTC-10843-MS. https://doi.org/10.2523/IPTC-10843-MS.
Spivey, J. P., and Lee, W. J. 1999. Variable Wellbore Storage Models for a Dual-Volume Wellbore. Paper presented at SPE Annual Technical Conference and Exhibition, Houston, Texas, 3-6 October. SPE-56615-MS. https://doi.org/10.2118/56615-MS.
Suri, A., Sharma, M. M., Peters, E. Estimates of Fracture Lengths in an Injection Well by History Matching Bottomhole Pressures and Injection Profile. SPE Res Eval & Eng 14 (04): 405–417. SPE-132524-PA. https://doi.org/10.2118/132524-PA.
van Dam, D. B., Pater, C. J., and Romijn, R. 1998. Analysis of Hydraulic Fracture Closure in Laboratory Experiments. Paper presented at SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, 8-10 July. SPE-47380-MS. https://doi.org/10.2118/47380-MS.
van den Hoek, P. J. 2002. Pressure Transient Analysis in Fractured Produced Water Injection Wells. Paper presented at SPE Asia Pacific Oil and Gas Conference and Exhibition, Melbourne, Australia, 8-10 October. SPE-77946-MS. https://doi.org/10.2118/77946-MS.
van den Hoek, P. J. 2005. A Novel Methodology to Derive the Dimensions and Degree of Containment of Waterflood-Induced Fractures from Pressure Transient Analysis. Paper presented at SPE Annual Technical Conference and Exhibition, Denver, Colorado, 5-8 October. SPE-84289-MS. http://dx.doi.org/10.2118/84289-MS.
van den Hoek, P. J, Mahani, H., Hustedt, B., . 2008. Dynamic Induced Fractures in Waterflooding and EOR. Paper presented at SPE Russian Oil and Gas Technical Conference and Exhibition, Moscow, Russia, 28-30 October. SPE-115204-MS. https://doi.org/10.2118/115204-MS.
van den Hoek, P. J. 2017. A Simple Unified Pressure-Transient-Analysis Method for Fractured Waterflood Injectors and Minifractures in Hydraulic-Fracture Stimulation. SPE prod & Oper Preprint. SPE-181593-PA. https://doi.org/10.2118/181593-PA.
Waheibi, H. A., Garimella, S., Wardy, W. 2013. Safeguarding Reserves of A large Carbonate Waterflood Field by Preventing Induced Fractures. Paper presented at SPE Reservoir Characterization and Simulation Conference and Exhibition, Abu Dhabi, 16-18 September. SPE-165967-MS. https://doi.org/10.2118/165967-MS.
Wang, Y., Cheng S., Feng N., . 2017a. The Physical Process and Pressure-Transient Analysis Considering Fractures Excessive Extension in Water Injection Wells. J. Pet. Sci. Eng. 151 (2017): 439–454. http://dx.doi.org/10.1016/j.petrol.2017.01.006.
Wang, Y., Cheng, S., Feng, N., . 2017b. Semi-Analytical Modeling for Water Injection Well in Tight Reservoir Considering the Variation of Waterflood - Induced Fracture Properties – Case Studies in Changqing Oilfield, China. J. Pet. Sci. Eng. 159 (2017): 740–753. https://doi.org/10.1016/j.petrol.2017.09.043.
Wright, C. A., Weijers, L., Davis, E. J., . 1999. Understanding Hydraulic Fracture Growth: Tricky but Not Hopeless. Paper presented at SPE Annual Technical Conference and Exhibition, Houston, Texas, 3-6 October. SPE-56724-MS. https://doi.org/10.2118/56724-MS.
Yousef, A. A., Liu, J. S., Blanchard, G. W., . 2012. Smart Waterflooding: Industry. Paper presented at SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 8-10 October. SPE-159526-MS. https://doi.org/10.2118/159526-MS.