Use of Rate Transient Analysis to Evaluate Hydraulically Fractured Well Performance in A Mature Gas Field
- Basayir Al-Lawati (Petroleum Development Oman) | Thomas Blasingame (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE International Hydraulic Fracturing Technology Conference and Exhibition, 16-18 October, Muscat, Oman
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petroleum Engineers
- 1.6.9 Coring, Fishing, 1.6 Drilling Operations, 1.10 Drilling Equipment, 1.6.1 Drill String Components and Drilling Tools (tubulars, jars, subs, stabilisers, reamers, etc), 5.6.3 Pressure Transient Analysis, 5 Reservoir Desciption & Dynamics, 5.5.8 History Matching, 5.5 Reservoir Simulation
- Power-law Exponential, Modified Hyperbolic, Decline Curve Analysis, Oman, Rate Transient Analysis
- 2 in the last 30 days
- 248 since 2007
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In this work, we assess the historical well performance for a mature gas condensate field in Oman (the field name is designated as "BHA," where "BHA" is a pseudonym). The reservoirs of the BHA field are complex and have low permeabilities which results in substantial uncertainty in reserves estimation, which in turn has resulted in regular modifications of the booked volumes. To confine these booked volumes, we employed two techniques: "time-rate" analysis (or Decline Curve Analysis (DCA)) and "time-rate-pressure" analysis (or Rate Transient Analysis (RTA)).
To perform the decline curve analysis work we used Microsoft Excel to match data using both the Modified Hyperbolic (MH) and Power-Law Exponential (PLE) DCA relations. We also used the Kappa Engineering product "Topaze" to conduct the Rate Transient Analysis (or RTA) by first estimating reservoir parameters and then performing a simulation history match of both the rate and pressure data. The DCA and RTA models were both used to construct a 30-year forecast and 30-year EUR values were obtained using these forecasts. Finally, we created parametric correlations using estimated reservoir properties from RTA and the matched parameters obtained using the MH and PLE relations for DCA.
The core purpose of this work was to provide assurance in the booked reserves volumes for these low permeability reservoirs and to obtain correlations of reserves and reservoir property estimates for fields like the BHA field.
|File Size||2 MB||Number of Pages||19|
Al-Hussainy, R., Ramey, H.J., Jr., Crawford, P.B. 1966. The Flow of Real Gases Through Porous Media. Journal of Petroleum Technology 18 (05). SPE-1243-A-PA. http://dx.doi.org/10.2118/1243-A-PA.
Arps, J.J. 1945. Analysis of Decline Curves. Transactions of the AIME 160 (01). SPE-945228-G. http://dx.doi.org/10.2118/945228-G.
Blasingame, T.A., Johnston, J.L., Lee, W.J. 1989. Type-Curve Analysis Using the Pressure Integral Method. SPE California Regional Meeting, Bakersfield, California, 5-7 April. SPE-18799-MS. http://dx.doi.org/10.2118/18799-MS.
Blasingame, T.A., Lee, W.J. 1986. Variable-Rate Reservoir Limits Testing. Permian Basin Oil and Gas Recovery Conference, Midland, Texas, 13-15 March. SPE-15028-MS. http://dx.doi.org/10.2118/15028-MS.
Blasingame, T.A., McCray, T.L., Lee, W.J. 1991. Decline Curve Analysis for Variable Pressure Drop/Variable Flowrate Systems. SPE Gas Technology Symposium, Houston, Texas, 22-24 January. SPE-21513-MS. http://dx.doi.org/10.2118/21513-MS.
Blasingame, T.A., Rushing, J.A. 2005. A Production-Based Method for Direct Estimation of Gas in Place and Reserves. SPE Eastern Regional Meeting, Morgantown, West Virginia, 14–16 September. SPE-98042-MS. http://dx.doi.org/10.2118/98042-MS.
Carter, R.D. 1985. Type Curves for Finite Radial and Linear Gas-Flow Systems: Constant-Terminal-Pressure Case. Society of Petroleum Engineers Journal 25 (05): 719–728. SPE-12917-PA. http://dx.doi.org/10.2118/12917-PA.
Fetkovich, M.J. 1980. Decline Curve Analysis Using Type Curves. Journal of Petroleum Technology 32 (06): 1065–1077. SPE-4629-PA. http://dx.doi.org/10.2118/4629-PA.
Fraim, M.L., Wattenbarger, R.A. 1987. Gas Reservoir Decline-Curve Analysis Using Type Curves With Real Gas Pseudopressure and Normalized Time. 2 (04): 671–682. SPE-14238-PA. http://dx.doi.org/10.2118/14238-PA.
Ilk, D., Anderson, D.M., Stotts, G.W.J.. 2010. Production Data Analysis--Challenges, Pitfalls, Diagnostics. SPE Reservoir Evaluation & Engineering 13 (03): 538–552. SPE-102048-PA. http://dx.doi.org/10.2118/102048-PA.
Ilk, D., Jenkins, C.D., Blasingame, T.A. 2011. Production Analysis in Unconventional Reservoirs - Diagnostics, Challenges, and Methodologies. North American Unconventional Gas Conference and Exhibition, The Woodlands, Texas, 14–16 June. SPE-144376-MS. http://dx.doi.org/10.2118/144376-MS.
Ilk, D., Rushing, J.A., Blasingame, T.A. 2011. Integration of Production Analysis and Rate-Time Analysis via Parametric Correlations — Theoretical Considerations and Practical Applications. SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, 24–26 January. SPE-140556-MS. http://dx.doi.org/10.2118/140556-MS.
Ilk, D., Rushing, J.A., Perego, A.D.. 2008. Exponential vs. Hyperbolic Decline in Tight Gas Sands: Understanding the Origin and Implications for Reserve Estimates Using Arps’ Decline Curves. SPE Annual Technical Conference and Exhibition, Denver, Colorado, 21–24 September. SPE-116731-MS. http://dx.doi.org/10.2118/116731-MS.
Palacio, J.C., Blasingame, T.A. 1993. Decline-Curve Analysis With Type Curves - Analysis of Gas Well Production Data. Low Permeability Reservoirs Symposium, Denver, Colorado, 26-28 April. SPE-25909-MS. http://dx.doi.org/10.2118/25909-MS.
Sureshjani, M.H., Gerami, S. 2011. A New Model for Modern Production-Decline Analysis of Gas/Condensate Reservoirs. Journal of Canadian Petroleum Technology 50 (7/8): 10–23. SPE-149709-PA. http://dx.doi.org/10.2118/149709-PA.
Valko, P. P. 2009). Assigning Value to Stimulation in the Barnett Shale: A Simultaneous Analysis of 7000 Plus Production Histories and Well Completion Records. Society of Petroleum Engineers. https://doi.org/10.2118/119369-MS