History Matching and Forecasting Tight Gas Condensate and Oil Wells by Use of an Approximate Semianalytical Model Derived From the Dynamic-Drainage-Area Concept
- Christopher R. Clarkson (University of Calgary) | Farhad Qanbari (University of Calgary)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- October 2016
- Document Type
- Journal Paper
- 540 - 552
- 2016.Society of Petroleum Engineers
- history-matching, tight oil, tight gas condensate, dynamic drainage area, forecasting
- 3 in the last 30 days
- 680 since 2007
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Recently, low-permeability (tight) gas condensate and oil reservoirs have been the focus of exploitation by operators in North America. Multifractured horizontal wells (MFHWs) producing from these reservoirs commonly exhibit long periods of transient flow, during which two-phase flow of oil and gas begins because of well flowing pressures dropping to less than saturation pressure. History matching and forecasting of such wells can be rigorously performed by use of numerical simulation, but this approach requires significant data and time to set up. Analytical methods, although requiring fewer data and less time to apply, have historically been developed only for single-phase-flow scenarios. In this work, a novel and rigorous analytical method is developed for history matching and forecasting MFHWs experiencing multiphase flow during the transient and boundary dominated flow periods. The distance-of-investigation (DOI) concept has been used for many years in pressure-transient analysis to estimate distances of reservoir boundaries to wells, among other applications. In the current work, the DOI concept is used to estimate dynamic drainage area (DDA) to forecast tight gas condensate and oil wells; a linear flow geometry is assumed. During transient flow, the DDA is calculated at each timestep by use of the linear-flow DOI formulation; a multiphase version of the linear-flow productivity index (PI) equation and material-balance equations for gas, condensate, and oil are solved iteratively for pressure, saturation, and fluid-production rate. The PI equations for gas and oil use pseudopressure, which is evaluated with saturation/pressure relationships derived from pressure/volume/temperature data. For boundarydominated flow, when the drainage area is static, the inflow equations are again coupled with material balance for both phases. The new method is validated against numerical simulation, covering a wide range of fluid properties and operating conditions. The new method matches the simulation acceptably for all cases studied. Field examples of MFHWs are also analyzed to demonstrate the practical applicability of the approach. The three liquid-rich shale examples analyzed were also chosen to represent a wide range of fluid properties. In all cases, acceptable history matches are achieved. The new analytical forecasting/history-matching procedure developed in this work provides a practical alternative to numerical simulation for tight gas condensate and oil experiencing two phase flow during the transient-flow period. The method, which does not rely on Laplace-space solutions, is conceptually simple to understand, easy to implement, and avoids the inconvenience of Laplace-space inversion.
|File Size||4 MB||Number of Pages||13|
Behmanesh, H., Hamdi, H. and Clarkson, C. R. 2015. Production Data Analysis of Liquid Rich Shale Gas Condensate Reservoirs. J. Nat. Gas Sci. Eng. 22 (January): 22–34. http://dx.doi.org/10.1016/j.jngse.2014.11.005.
Bøe, A., Skjaeveland, S. M. and Whitson, C. H. 1989. Two-Phase Pressure Test Analysis. SPE Form Eval 4 (4): 604–610. SPE-10224-PA. http://dx.doi.org/10.2118/10224-PA.
Brown, M., Ozkan, E., Raghavan, R. et al. 2011. Practical Solutions for Pressure-Transient Responses of Fractured Horizontal Wells in Unconventional Shale Reservoirs. SPE Res Eval & Eng 14 (6): 663–676. SPE-125043-PA. http://dx.doi.org/10.2118/125043-PA.
Camacho-V., R. G. and Raghavan, R. 1989. Boundary-Dominated Flow in Solution-Gas-Drive Reservoirs. SPE Res Eval & Eng 4 (4): 503–512. http://dx.doi.org/10.2118/18562-PA.
Clarkson, C. R. and Pedersen, P. K. 2010. Tight Oil Production Analysis: Adaptation of Existing Rate-Transient Analysis Techniques. Presented at the Canadian Unconventional Resources & International Petroleum Conference, Calgary, 19–21 October. SPE-137352-MS. http://dx.doi.org/10.2118/137352-MS.
Clarkson, C. R. and Qanbari, F. 2015. An Approximate Analytical Multi-Phase Forecasting Method for Multi-Fractured Light Tight Oil Wells With Complex Fracture Geometry. Presented at the Unconventional Resources Technology Conference, San Antonio, Texas, 20–22 July. SPE-178665-MS. http://dx.doi.org/10.2118/178665-MS.
Clarkson, C. R., Williams-Kovacs, J. D., Qanbari, F., et al. 2015. History-Matching and Forecasting Tight/Shale Gas Condensate Wells Using Combined Analytical, Semi-Analytical, and Empirical Methods. Journal of Natural Gas Science and Engineering 26: 1620–1647. http://dx.doi.org/10.1016/j.jngse.2015.03.025.
Juell, A. O. and Whitson, C. H. 2013. Optimized Well Modeling of Liquid-Rich Shale Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 30 September–2 October. SPE-166380-MS. http://dx.doi.org/10.2118/166380-MS.
Lee, K. S., Miller, M. A. and Sepehrnoori, K. 1998. Succession-of-States Model for Calculating Long-Time Performance of Depletion Reservoirs. SPE Journal 3 (03): 279–284. SPE-51023-PA. http://dx.doi.org/10.2118/51023-PA.
Lee, J., Rollins, J. B. and Spivey, J. P. 2003. Pressure Transient Testing. Richardson, Texas: Textbook Series, Society of Petroleum Engineers.
Muskat, M. 1937. The Flow of Homogeneous Fluids Through Porous Media. New York City: McGraw-Hill.
Nobakht, M. and Clarkson, C. R. 2012. 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. SPE-143989-PA. http://dx.doi.org/10.2118/143989-PA.
Nobakht, M., Ambrose, R., Clarkson, C. R. et al. 2013. Effect of Completion Heterogeneity in a Horizontal Well With Multiple Fractures on the Long-Term Forecast in Shale-Gas Reservoirs. J Can Pet Technol 52 (6): 417–425. SPE-149400-PA. http://dx.doi.org/10.2118/149400-PA.
Ozkan, E., Brown, M., Raghavan, R. et al. 2011. Comparison of Fractured-Horizontal-Well Performance in Tight Sand and Shale Reservoirs. SPE Res Eval & Eng 14 (2): 248–259. SPE-121290-PA. http://dx.doi.org/10.2118/121290-PA.
Qanbari, F. and Clarkson, C. R. 2013a. A New Method for Production Data Analysis of Tight and Shale Gas Reservoirs During the Transient Linear Flow Period. J. Nat. Gas Sc. Eng. 14 (September): 55–65. http://dx.doi.org/10.1016/j.jngse.2013.05.005.
Qanbari, F. and Clarkson, C. R. 2013b. Analysis of Transient Linear Flow in Tight Oil and Gas Reservoirs with Stress-Sensitive Permeability and Multi-Phase Flow. Presented at the SPE Unconventional Resources Conference Canada, Calgary, 5–7 November. SPE-167176-MS. http://dx.doi.org/10.2118/167176-MS.
Stalgorova, E. and Mattar, L. 2013. Analytical Model for Unconventional Multifractured Composite Systems. SPE Res Eval & Eng 16 (3): 246–256. SPE-162516-PA. http://dx.doi.org/10.2118/162516-PA.
Shahamat, M. S., Mattar, L. and Aguilera, R. 2014. A Physics-Based Method for Production Data Analysis of Tight and Shale Petroleum Reservoirs Using Succession of Pseudo-Steady States. Presented at the SPE/EAGE European Unconventional Resources Conference and Exhibition, Vienna, Austria, 25–27 February. SPE-167686-MS. http://dx.doi.org/10.2118/167686-MS.
Tabatabaie, S. H. 2014. Unconventional Reservoirs: Mathematical Modeling of Some Non-linear Problems. PhD dissertation, University of Calgary, Calgary.
Wattenbarger, R. A., El-Banbi, A. H., Villegas, M. E. et al. 1998. Production Analysis of Linear Flow Into Fractured Tight Gas Wells. Presented at the SPE Rocky Mountain Regional/Low-Permeability Reservoirs Symposium, Denver, 5–8 April. SPE-39931-MS. http://dx.doi.org/10.2118/39931-MS.
Whitson, C. H. and Brule, M. R. 2000. Phase Behavior. Richardson, Texas: Monograph Series, Society of Petroleum Engineers.
Whitson, C. H. and Sunjerga, S. 2012. PVT in Liquid-Rich Shale Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 8–10 October. SPE-155499-MS. http://dx.doi.org/10.2118/155499-MS.