Comparison of the Methods for Analyzing Rate and Pressure Transient Data from Multistage Hydraulically Fractured Unconventional Gas Reservoirs
- Aykut Atadeger (The University of Tulsa) | Ela Batur (The University of Tulsa and Turkish Petroleum Corporation) | Mustafa Onur (The University of Tulsa) | Leslie G. Thompson (Cimarex Energy Company)
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- Society of Petroleum Engineers
- SPE Annual Technical Conference and Exhibition, 30 September - 2 October, Calgary, Alberta, Canada
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- Comparison of methods, boundary dominated flow analysis, Rate/pressure transient data, linear flow analysis, Unconventional reservoirs
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- 327 since 2007
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In this study, we provide a detailed review and comparison of the various graphical methods, available in the literature, to interpret/analyze rate and pressure transient data acquired from multistage hydraulically fractured horizontal wells (MHFHWs) completed in unconventional gas reservoirs. The methods reviewed are based on transient matrix linear flow (Ibrahim and Wattenbarger 2006; Nobakht and Clarkson 2012a, 2012b; Chen and Raghavan 2013) and boundary-dominated flow due to the stimulated reservoir volume (SRV). The methods for boundary-dominated flow are the contacted volume methods based on the ending times of linear flow (Wattenbarger et al. 1998; Behmanesh et al. 2015) and the material balance methods (FBMs); Agarwal-Gardner method (Agarwal et al. 1999) and conventional method involving plotting rate-normalized pseudo pressure versus pseudo time material-balance time. We delineate the advantages and limitations associated with each method and identify the best methods of interpretation and analysis. Three different production modes; constant rate (CR), constant bottomhole-pressure (CBHP), and variable-rate/bottomhole pressure, are considered. For comparison, various synthetic test data sets generated from a high-resolution spectral gas simulator, which treats nonlinear gas flow rigorously and accurately to simulate rate transient data, is used. Both synthetic noise-free and noisy rate/pressure data sets considering wide ranges of initial reservoir pressure and bottomhole pressure as well as real field data sets are used to compare the methods. For linear flow, the Nobakht-Clarkson method yields the best results, although its use is tedious as it requires an iterative procedure. The Chen-Raghavan method for linear flow seems to provide comparable results to the Nobakht-Clarkson method, but does not require iterative procedure. The Ibrahim-Wattenbarger method for linear flow analysis always overestimates flow capacity as compared to the other methods. For boundary dominated flow, the results show that the Agarwal-Gardner FBM method is quite vulnerable to the error in rate/pressure data, while the conventional FBM method is more robust to noise and provides more accurate estimates of gas in place. Among the methods based on the ending time of linear flow, it was found that unit-impulse method based on Behmanesh et al. (2015) provides best results for predicting gas in place.
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Agarwal R.G.,Gardner, D. C.,Kleinsteiber, S.W., and Fussell, D.D. 1999. Analyzing Well Production Data Using Combined-Type-Curve and Decline-Curve Analysis Concepts. SPE Res Eval & Eng 2 (5): 478-486. http://dx.doi.org/10.2118/57916-PA.
Al-Hussainy, R.,Ramey, H.J. Jr., and Crawford, P.B. 1966. The Flow of Real Gases Through Porous Media. J Pet Technol 18 (5): 624-636. SPE-1243-A-PA. http://dx.doi.org/10.2118/1243-A-PA.
Anderson, D.M. and Mattar, L. 2007. An Improved Pseudo-Time for Gas Reservoirs With Significant Transient Flow. Journal of Canadian Petroleum Technology 46 (7): 49-54. http://dx.doi.org/10.2118/07-07-05.
Anderson, D.M.,Nobakht, M.,Moghadam, S., and Mattar, L. 2010. Analysis of Production Data from Fractured Shale Gas Wells. Presented at the SPE Unconventional Gas Conference held in Pittsburgh, Pennsylvania, USA, 23-25 February. http://dx.doi.org/10.2118/131787-MS.
Barree D.R.,Miskimins, J., and Gilbert, J. 2015. Diagnostic Fracture Injection Tests: Common Mistakes, Misfires, and Misdiagnoses. SPE Production & Operations 30 (2): 84-98. http://dx.doi.org/10.2118/169539-PA.
Behmanesh, H.,Clarkson, C. R.,Tabatabaie, S. H., and Heidari Sureshjani, M. 2015. Impact of Distance-of-Investigation Calculations on Rate-Transient Analysis of Unconventional Gas and Light-Oil Reservoirs: New Formulations for Linear Flow. Journal of Canadian Petroleum Technology 54 (6): 509-519. http://dx.doi.org/10.2118/178928-PA.
Blasingame, T.A.,Johnston, J.L., and Lee, W.J. (1989). Type-Curve Analysis Using the Pressure-Integral Method. Presented at the 1989 SPE California Regional Meeting held in Bakersfield, 5-7 April. SPE 18799. http://dx.doi.org/10.2118/18799-MS
Bohacs, K.M.,Passey, Q.R.,Rudnicki, M.,Esch, W.L., and Lazar, O.R. 2013. The Spectrum of Fine-Grained Reservoirs From "Shale Gas" to "Shale Oil"/Tight Liquids: Essential Attributes, Key Controls, Practical Characterization. Presented at the International Petroleum Technology Conference held in Beijing, China, 26-28 March. IPTC-16676-MS. http://dx.doi.org/10.2523/IPTC-16676-MS.
Brown, M.L.,Ozkan, E.,Raghavan, R., and Kazemi, H. 2011. Practical Solutions for Pressure-Transient Responses of Fractured Horizontal Wells in Unconventional Shale Reservoirs. SPE Res Eval & Eng 14 (6): 663-676. http://dx.doi.org/10.2118/125043-PA.
Chen, C. and Raghavan, R. 2013. On the Liquid-Flow Analog To Evaluate Gas Wells Producing in Shales. SPE Res Eval & Eng 16 (2): 209-215. http://dx.doi.org/10.2118/165580-PA.
Cipolla, C. and Wallace, J. 2014. Stimulated Reservoir Volume: A Misapplied Concept? Presented at the SPE Hydraulic Fracturing Technology Conference held in The Woodlands, Texas, USA, 4-6 February. SPE 168596-MS. http://dx.doi.org/10.2118/168596-MS.
Cinco-Ley, H.,Samaniego-V., F., and Dominguez, N. 1978. Transient Pressure Behavior for a Well with a Finite-Conductivity Vertical Fracture. SPE Journal 18(4) 253-64. http://dx.doi.org/10.2118/SPE-6014-PA.
Dong, Zhenzhen,Holidtch, S. A.,McVay, D.,Ayers, W.B. 2012. Global Unconventional Gas Resource Assessment. SPE Economics & Management 4 (4): 222-234. http://dx.doi.org/10.2118/148365-PA.
Florence, F.A.,Rushing, J.,Newsham, K., and Blasingama, T.A. 2007. Improved Permeability Prediction Relations for Low Permeability Sands. Presented at the SPE Rocky Mountain Oil & Gas Technology Symposium held in Denver, Colorado, USA, 16-18 April. SPE-107954-MS. http://dx.doi.org/10.2118/107954-MS.
Fraim, M.L., and Wattenbarger, R.A. 1987. Gas Reservoir Decline-Curve Analysis Using Type Curves with Real Gas Pseudopressure and Normalized Time. SPE Form. Eval 2 (4) 671-682. http://dx.doi.org/10.2118/14238-PA
Holidtch, S. A. 2003. The Increasing Role of Unconventional Reservoirs in the Future of the Oil and Gas Business. Journal of Petroleum Technology 55 (11): 34-79. http://dx.doi.org/10.2118/1103-0034-JPT.
Ibrahim, M. and Wattenbarger, R.A. 2006. Analysis of Rate Dependence in Transient Linear Flow in Tight Gas Wells. Presented at the 2006 Abu Dhabi International Petroleum Exhibition and Conference held in Abu Dhabi, U.A.E., 5-8 November. SPE-100836-MS. http://dx.doi.org/10.2118/100836-MS.
Javadpour, F.,Fisher, D., and Unsworth, M. 2007. Nanoscale Gas Flow in Shale Gas Sediments. Journal of Canadian Petroleum Technology 46 (10): 55-61. http://dx.doi.org/10.2118/07-10-06.
Jiang, J.,Younis, R.,Thompson, L.,Liu, Z. 2015. Rate Transient Effects of Various Complex Fracture Network Topologies in Unconventional Gas Reservoirs: A Numerical Simulation Study. Presented at the Unconventional Resources Technology Conference held in San Antonio, Texas, USA, 20-22 July. URTEC-2174059-MS. http://dx.doi.org/10.15530/URTEC-2174059-MS.
Kuchuk, F. 2009. Radius of Investigation for Reserve Estimation from Pressure Transient Well Tests. Presented at the SPE Middle East Oil Show and Conference held in Manama, Bahrain, 15-18 March. SPE-120515-MS. http://dx.doi.org/10.2118/120515-MS.
Kuchuk, F.,Biryukov, D.,Fitzpatrick, T., and Morton, K. 2015. Pressure Transient Behavior of Horizontal Wells Intersecting Multiple Hydraulic and Natural Fractures in Conventional and Unconventional Unfractured and Naturally Fractured Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition held in Houston, Texas, USA, 28-30 September. SPE-175037-MS. http://dx.doi.org/10.2118/175037-MS.
Kuchuk, K.,Morton, M., and Biryukov, D. 2016. Rate-Transient Analysis for Multistage Fractured Horizontal Wells in Conventional and Un-Conventional Homogeneous and Naturally Fractured Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition held in Dubai, UAE, 26-28 September. SPE-181488-MS. http://dx.doi.org/10.2118/181488-MS.
Moridis, G. J.,Blasingame, T. A., and Freeman, C. M., 2010. Analysis of Mechanisms of Flow in Fractured Tight-Gas and Shale-Gas Reservoirs. Presented at the SPE Latin American & Caribbean Petroleum Engineering Conference held in Lima, Peru, 1-3 December. SPE 139250-MS. http://dx.doi.org/10.2118/139250-MS.
Nobakht, M. and Mattar, L. 2012. Analyzing Production Data From Unconventional Gas Reservoirs With Linear Flow and Apparent Skin. Journal of Canadian Petroleum Technology 51 (1): 52-59. http://dx.doi.org/10.2118/137454-PA.
Nobakht, M. and Clarkson, C.R. 2012a. A New Analytical Method for Analyzing Linear Flow in Tight/Shale Gas Reservoirs: Constant-Rate Boundary Condition. SPE Res Eval & Eng 15 (1): 51-59. http://dx.doi.org/10.2118/143990-PA.
Nobakht, M. and Clarkson, C.R. 2012b. A New Analytical Method for Analyzing Linear Flow in Tight/Shale Gas Reservoirs: Constant-Flowing-Pressure Boundary Condition. SPE Res Eval & Eng 15 (3): 370-384. http://dx.doi.org/10.2118/143989-PA.
Onur, M. and Reynolds, A.C. 1988. A New Approach for Constructing Type Curves for Well-Test Analysis. SPE Form. Eval 8 (2) 197-206. http://dx.doi.org/10.2118/16473-PA
Onur, M.,Peres, A.M.M, and Reynolds, A.C. 1993. New Well-Testing Pressure Functions With Applications. SPE Form. Eval 8 (2) 135-144. http://dx.doi.org/10.2118/191514-PA
Ozkan, E.,Brown, M.L.,Raghavan, R., and Kazemi, H. 2011. Comparison of Fractured-Horizontal-Well Performance in Tight Sand and Shale Reservoirs. SPE Res Eval & Eng 14 (2): 248-259. http://dx.doi.org/10.2118/121290-PA.
Palacio, J.C. and Blasingame, T.A. 1993. Decline-Curve Analysis Using Type Curves: Analysis of Gas Well Production Data. Presented at the 1993 Rocky Mountain Regional Meeting/Low Permeability Reservoirs Symposium and Exhibition held in Denver, Colorado, USA, 26-28 April. SPE 25909. http://dx.doi.org/10.2118/25909-MS
Roadifer, R. D. and Kalaei, R. D. 2015. Pseudo-Pressure and Pseudo-Time Analysis for Unconventional Oil Reservoirs With New Expressions for Average Reservoir Pressure During Transient Radial and Linear Flow. Presented at the Unconventional Resources Technology Conference held in San Antonio, Texas, USA, 20-22 July. URTEC-2172344-MS. http://dx.doi.org/10.15530/URTEC-2172344-MS.
Thompson, L.G. 2018a. Horizontal Well Fracture Interference - Semi-Analytical Modeling and Rate Prediction. Journal of Petroleum Science and Engineering 160 (2018): 465-473. https://doi.org/10.1016/j.petrol.2017.10.002.
Thompson, L.G. 2018b. Modeling the Effects of Fracture Interference Using a Spectral Gas Reservoir Simulator. Journal of Petroleum Science and Engineering 160 (2018): 474-482. https://doi.org/10.1016/j.petrol.2017.10.038.
Torcuk, M.A.,Kurtoglu, B.,Alharthy, N.,Kazemi, H. 2013. Analytical Solutions for Multiple Matrix in Fractured Reservoirs: Application to Conventional and Unconventional Reservoirs. SPE Journal 18 (5): 969-981. http://dx.doi.org/10.2118/164528-PA.
Wattenbarger, R. A.,El-Banbi, A. H.,Villegas, M. E., and Maggard, J. B. 1998. Production Analysis of Linear Flow Into Fractured Tight Gas Wells. Presented at the 1998 SPE Rocky Mountain Regional/Low-Permeability Reservoirs Symposium held in Denver, Colorado. 5-8 April. SPE-39931-MS. http://dx.doi.org/10.2118/39931-MS
Whittle, T. and Gringarten, A. 2008. The Determination of Minimum Tested Volume from Deconvolution of Well Test Pressure Transients. Presented at the 2008 SPE Annual Technical Conference and Exhibition held in Denver, Colorado, USA, 21-24 September. SPE 116575. http://dx.doi.org/10.2118/116575-MS
Wu, Y. S.,Wang, C.,Li, J., and Fakcharoenphol, P. 2012. Transient Gas Flow in Unconventional Gas Reservoirs. Presented at the SPE EUROPEC/EAGE Annual Technical Conference and Exhibition held in Copenhagen, Denmark, 4-7 June. SPE 154448-MS. http://dx.doi.org/10.2118/154448-MS.