A Comprehensive Work Flow To Characterize Waterflood-Induced Fractures by Integrating Real-Time Monitoring, Formation Test, and Dynamic Production Analysis Applied to Changqing Oil Field, China
- Yang Wang (China University of Petroleum, Beijing and Pennsylvania State University) | Shiqing Cheng (China University of Petroleum, Beijing) | Kaidi Zhang (Lusheng Petroleum Development Company Limited, Sinopec Shengli Oilfield Company) | Youwei He (China University of Petroleum, Beijing and Texas A&M Univeristy) | Naichao Feng (China University of Petroleum, Beijing) | Jiazheng Qin (China University of Petroleum, Beijing) | Le Luo (China University of Petroleum, Beijing) | Haiyang Yu (China University of Petroleum, Beijing)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- May 2019
- Document Type
- Journal Paper
- 692 - 708
- 2019.Society of Petroleum Engineers
- dynamic production analysis, formation test, waterflood-induced fracture, ITD work flow, real-time monitoring
- 7 in the last 30 days
- 359 since 2007
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It is well-known that water injection may induce formation fracturing in tight reservoirs. Especially when the field-geology condition is complex and the waterflood-induced fractures (WIFs) are not well-identified in time, the induced fractures can be of the same order as the well spacing, which has a significant, and generally undesired, impact on both areal sweep and vertical conformance. Therefore, the onset of WIFs must be identified in a timely manner, and the waterflooding performance must be evaluated comprehensively to formulate an appropriate strategy over time.
A new work flow, containing analytical/semianalytical, statistical, and numerical techniques that are based on flow-rate/BHP and formation-testing data, is applied to identify the WIFs, diagnose waterflooding direction and front distribution, analyze interwell connectivity, and interpret abnormal bottomhole-pressure (BHP) behaviors in the Changqing Oil field. The work flow includes three modules: First, real-time monitoring and analysis, including modified Hall plot, evolving skin analysis, and injection/fracturing index methods, are used to identify the start of WIFs. Then, the formation-testing module, consisting of step-rate test (SRT), radioactive-tracer logging, and passive seismic method, is applied to investigate the formation-fracturing pressure, and uneven waterflooding performance in the areal and vertical directions. On the basis of the two former modules, we adapt the third module, which includes injector/producer relationships (IPRs) and the constrained multiple-linear-regression (MLR) method, to quantitatively investigate the waterflooding direction by injection/production rates. A new model—injection well with waterflood-induced fracture (IWWIF)—is proposed to characterize the abnormal BHP behaviors considering the properties variation (shrinking fracture length and decreasing fracture conductivity) of WIFs during the falloff period.
Compared with an individual method, the ITD (which is the abbreviation of WIF identification, formation testing, and dynamic production analysis) work flow is developed to obtain a comprehensive and deep understanding of waterflooding performance. The main emphasis of this study is to integrate different approaches to address the key uncertainties rather than analyze each data source individually. On the basis of the results obtained by this work flow, the operators can make a more-proactive and -reasonable decision on waterflooding management. The work flow proposed in this paper gives a useful guidance in short- and long-term waterflooding management in tight reservoirs.
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Abbaszadeh, M. and Kamal, M. 1989. Pressure-Transient Testing of Water-Injection Wells. SPE Res Eng 4 (1): 115–124. SPE-16744-PA. https://doi.org/10.2118/16744-PA.
Albertoni, A. and Lake, L. W. 2003. Inferring Interwell Connectivity Only From Well-Rate Fluctuations in Waterfloods. SPE Res Eval & Eng 6 (1): 6–16. SPE-83381-PA. https://doi.org/10.2118/83381-PA.
Almarri, M., Prakasa, B., and Davies, D. 2017. Identification and Characterization of Thermally Induced Fractures Using Modern Analytical Techniques. Paper presented at the SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, Dammam, Saudi Arabia, 24–27 April. SPE-188084-MS. https://doi.org/10.2118/188084-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. Presented at the Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, 10–13 November. SPE-171882-MS. https://doi.org/10.2118/171882-MS.
Andrade, A., Correa, R., Vaca, S. et al. 2015. Thermal-Induced Fracture Effect With a Lower Cool-Down Reduction—Case Studies for Ecuador; Villano and CPF Water Disposal Wells. Presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, Quito, Ecuador, 18–20 November. SPE-177155-MS. https://doi.org/10.2118/177155-MS.
BinAkresh, S. A. and Rahman, N. M. A. 2011. Challenges in Interpreting Well Testing Data From Fractured Water Injection Wells With a Dual Storage Phenomenon. Presented at the SPE Middle East Oil and Gas Show and Conference, Manama, Bahrain, 25–28 September. SPE-139587-MS. https://doi.org/10.2118/139587-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. Presented at the 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. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, 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. Presented at the SPE Gas Technology Symposium, Calgary, 15–17 May. SPE-100578-MS. https://doi.org/10.2118/100578-MS.
Davletbaev, A., Baikov, V., and Bikbulatova, G. et al. 2014. Field Studies of Spontaneous Growth of Induced Fractures in Injection Wells. Presented at the SPE Russian Oil and Gas Exploration & Production Technical Conference and Exhibition, Moscow, 14–16 October. SPE-171232-MS. https://doi.org/10.2118/171232-MS.
EI-Hadidi, S. M., Falade, G. K., Dabbouk, C. et al. 1997. Water Injection Profile Modification in a Layered Reservoir Using Polymer Treatment. Presented at the Middle East Oil Show and Conference, Bahrain, 15–18 March. SPE-37762-MS. https://doi.org/10.2118/37762-MS.
Feng, Y., Jones, J. F., and Gray, K. E. 2016. A Review of Fracture Initiation and Propagation Pressures for Lost Circulation and Wellbore Strengthening. SPE Drill & Compl 31 (2): 134–144. SPE-181747-PA. https://doi.org/10.2118/181747-PA.
Goodman, C., Howell, R., and Gabbard, J. 2005. Injection Testing To Determine Reservoir Properties. Presented at the SPE Production Operations Symposium, Oklahoma City, Oklahoma, 16–19 April. SPE-93958-MS. https://doi.org/10.2118/93958-MS.
Hagoort, J. 1980.Modeling the Propagation of Waterflood-Induced Hydraulic Fractures. SPE J. 20 (4): 293–303. SPE-7412-PA. https://doi.org/10.2118/7412-PA.
Hawe, D. E. 1976. Direct Approach Through Hall Plot Evaluation Improves the Accuracy of Formation Damage Calculations and Eliminates Pressure Fall-Off Testing. SPE-5989-MS.
Hall, H. N. 1963. How To Analyze Waterflood Injection Well Performance. World Oil (Oct): 128–130.
He, Y., Cheng, S., and 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. https://doi.org/10.2118/178053-PA.
He, Y., Cheng, S., and 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. https://doi.org/10.2118/185166-PA.
He, Y., Cheng, S., Rui, Z. et al. 2018. An Improved Rate-Transient Analysis Model of Multi-Fractured Horizontal Wells With Non-Uniform Hydraulic Fracture Properties. Energies 11 (2): 393. https://doi.org/10.3390/en11020393.
Hill, A. D. and Solares, J. R. 1985. Improved Analysis Methods for Radioactive Tracer Injection Logging. J Pet Technol 37 (3): 511–520. SPE-12140-PA. https://doi.org/10.2118/12140-PA.
Hill, A. D., Boehm, K. E., and Akers, T. J. 1988. Tracer-Placement Techniques for Improved Radioactive-Tracer Logging. J Pet Technol 40 (11): 511–520. SPE-17317-PA. https://doi.org/10.2118/17317-PA.
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 (1): 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 (1): 116–123. SPE-109876-PA. https://doi.org/10.2118/109876-PA.
Izgec, B. and Kabir, C. S. 2011. Identification and Characterization of High-Conductive Layers in Waterfloods. SPE Res Eval & Eng 14 (1): 113–119. SPE-123930-PA. https://doi.org/10.2118/123930-PA.
Jackson, M. D., Gulamali, M. Y., Leinov, E. et al. 2012. Spontaneous Potentials in Hydrocarbon Reservoirs During Waterflooding: Application to Water-Front Monitoring. SPE J. 17 (1): 53–69. SPE-135146-PA. https://doi.org/10.2118/135146-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 (9): 1147–1156. SPE-3696-PA. https://doi.org/10.2118/3696-PA.
Koning, E. J. L. and Niko, H. 1985. Fractured Water-Injection Wells: A Pressure Falloff Test for Determining Fracture Dimensions. Presented at the SPE Annual Technical Conference and Exhibition, Las Vegas, Nevada, 22–26 September. SPE-14458-MS. https://doi.org/10.2118/14458-MS.
Lizak, K. F., Bartko, K. M., Self, J. F. et al. 2006. New Analysis of Step-Rate Injection Tests for Improved Fracture Stimulation Design. Presented at the SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, 15–17 February. SPE-98098-MS. https://doi.org/10.2118/98098-MS.
Lyu, W., Zeng, L., Chen, M. et al. 2018. An Approach for Determining the Water Injection Pressure of Low-Permeability Reservoirs. Energy Exploration & Exploitation (in press; posted 23 January 2018), 19 pages. https://doi.org/10.1177/0144598718754374.
Maxwell, S. C. and Urbancic, T. I. 2001. The Role of Passive Microseismic Monitoring in the Instrumented Oil Field. The Leading Edge 20 (6): 636. https://doi.org/10.1190/1.1439012.
Nwokolo, C. 2013. Application of Novel Techniques to Fractured Injection Diagnostics in Waterflood Developments. Presented at the SPE Nigeria Annual International Conference and Exhibition, Lagos, Nigeria, 5–7 August. SPE-167564-MS. https://doi.org/10.2118/167564-MS.
Perkins, T. K. and Gonzalez, J. A. 1985. The Effect of Thermoelastic Stresses on Injection Well Fracturing. SPE J. 25 (1): 78–88. SPE-11332-PA. https://doi.org/10.2118/11332-PA.
Scott, M. P., Johnson, R. L., Datey, A. et al. 2010. Evaluating Hydraulic Fracture Geometry From Sonic Anisotropy and Radioactive Tracer Logs. Presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, Brisbane, Australia, 18–20 October. SPE-133059-MS. https://doi.org/10.2118/133059-MS.
Shchipanov, A. and Prosvirnow, M. 2017. Step Rate Test as a Way To Understand Well Performance in Fractured Carbonates. Presented at the SPE Europec featured at 79th EAGE Conference and Exhibition, Paris, 12–15 June. SPE-185795-MS. https://doi.org/10.2118/185795-MS.
Silber, R., Martin, J., Willis, S. et al. 2003. Comparing Fracture Simulation Design to Radioactive Tracer Field Results: A Case History. Presented at the SPE Eastern Regional Meeting, Pittsburgh, Pennsylvania, 6–10 September. SPE-84842-MS. https://doi.org/10.2118/84842-MS.
Singh, P. K., Agarwal, R. G., and Krase, L. D. 1987. Systematic Design and Analysis of Step-Rate Tests To Determine Formation Parting Pressure. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, 27–30 September. SPE-16798-MS. https://doi.org/10.2118/16798-MS.
Slevinsky, B. A. 2002. A Model for Analysis of Injection-Well Thermal Fractures. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, September–2 October. SPE-77568-MS. https://doi.org/10.2118/77568-MS.
Spivey, J. P. and Lee, W. J. 1999. Variable Wellbore Storage Models for a Dual-Volume Wellbore. Presented at the SPE Annual Technical Conference and Exhibition, Houston, 3–6 October. SPE-56615-MS. https://doi.org/10.2118/56615-MS.
Van den Hoek, P. J. 2002. Pressure Transient Analysis in Fractured Produced Water Injection Wells. Presented at the 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. 2003. Dimensions and Degree of Containment of Waterflood-Induced Fractures From Pressure Transient Analysis. SPE Res Eval & Eng 8 (5): 377–387. SPE-84289-PA. https://doi.org/10.2118/84289-PA.
Van denHoek, P. J. 2005. ANovelMethodology toDerive the Dimensions andDegree of Containment of Waterflood-Induced Fractures FromPressure Transient Analysis. Presented at the SPE Annual Technical Conference and Exhibition, Denver, 5–8 October. SPE-84289-MS. https://doi.org/10.2118/84289-MS.
Van den Hoek, P. J. 2016. A Simple Unified Pressure Transient Analysis Method for Fractured Waterflood Injectors and Minifracs in Hydraulic Fracture Stimulation. Presented at the SPE Annual Technical Conference and Exhibition, Dubai, 26–28 September. SPE-181593-MS. https://doi.org/10.2118/181593-MS.
Wang, Y., Cheng, S., Feng, N. et al. 2017a. The Physical Process and Pressure-Transient Analysis Considering Fractures Excessive Extension in Water Injection Wells. J. Pet. Sci. Eng. 151: 439–454. https://doi.org/10.1016/j.petrol.2017.01.006.
Wang, Y., Cheng, S., Feng, N. et al. 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: 740–753. https://doi.org/10.1016/j.petrol.2017.09.043.
Wang, Y., Cheng, S., Zhang, K. et al. 2018a. Case Studies: Pressure-Transient Analysis for Water Injector With the Influence of Waterflood-Induced Fractures in Tight Reservoir. Presented at the SPE Improved Oil Recovery Conference, Tulsa, 14–18 April. SPE-190264-MS. https://doi.org/10.2118/190264-MS.
Wang, Y., Cheng, S., Zhang, K. et al. 2018b. Impact of Shrinking Fracture Length and Decreasing Fracture Conductivity on Bottom-Hole Pressure Performance: A Semi-Analytical Model To Characterize Waterflood-Induced Fracture Around Water Injection Well. Presented at the SPE Western Regional Meeting, Garden Grove, California, 22–27 April. SPE-190060-MS. https://doi.org/10.2118/190060-MS.
Yousef, A. A., Lake, L. R., and Jensen, J. L. 2006. Analysis and Interpretation of Interwell Connectivity From Production and Injection Rate Fluctuations Using a Capacitance Model. Presented at the SPE/DOE Symposium on Improved Oil Recovery, Tulsa, 22–26 April. SPE-99998-MS. https://doi.org/10.2118/99998-MS.
Zhang, S. 2010. Application of Micro-Seismic Interwell Monitoring Technique on the Peripheral Oil Field in Daqing. MS thesis, Northeast Petroleum University, China.
Zhu, D. and Hill, A. D. 1998. Field Results Demonstrate Enhanced Matrix Acidizing Through Real-Time Monitoring. SPE Prod & Fac 13 (4): 279–284. SPE-52400-PA. https://doi.org/10.2118/52400-PA.
Zillur, R. and Al-Qahtani, M. Y. 2001. Using Radioactive Tracer Log, Production Tests, Fracture Pressure Match, and Pressure Transient Analysis to Accurately Predict Fracture Geometry in Jauf Reservoir, Saudi Arabia. Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 30 September–3 October. SPE-71650-MS. https://doi.org/10.2118/71650-MS.