Production Performance of a Constant-Pressure Well in an Orthogogonally Fractured Reservoir
- Jacques Hagoort (Hagoort and Associates BV)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- June 2010
- Document Type
- Journal Paper
- 523 - 537
- 2010. Society of Petroleum Engineers
- 4.3.4 Scale, 5.1.1 Exploration, Development, Structural Geology, 4.1.5 Processing Equipment, 4.1.2 Separation and Treating, 5.8.6 Naturally Fractured Reservoir, 4.6 Natural Gas, 5.6.9 Production Forecasting, 5.6.4 Drillstem/Well Testing, 5.8.8 Gas-condensate reservoirs
- Fractured reservoirs
- 1 in the last 30 days
- 580 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 10.00|
|SPE Non-Member Price:||USD 30.00|
We have analyzed the production performance of a constant-pressure well in a naturally fractured reservoir made up of orthogonal matrix blocks. The fractured reservoir is modeled as a double porosity reservoir, in which interporosity flow is represented by an exact analytical transient influx function. Three distinct production modes can be recognized: Modes I, II, and III. In Mode I, the reservoir boundary is seen after flow in the matrix blocks has stabilized. In Mode II, this occurs while flow in the matrix blocks is still in the infinite-acting stage. In Mode III, the reservoir boundary is already seen before the influx from the matrix blocks has effectively set off. The effect of the natural fractures becomes increasingly evident with increasing mode number: from almost absent in Mode I, to significant in Mode II, and to dominant in Mode III. Mode I shows the best production performance, Mode III the worst. Each production mode can be subdivided into a number of distinct flow regimes. The production profiles in each of these regimes and the regime boundaries can be approximated by simple analytical formulas. These formulas may be used for production forecasting and for analyzing historical production decline.
|File Size||760 KB||Number of Pages||15|
Carlslaw, H.S. and Jaeger, J.C. 1959. Conduction of Heat in Solids,second edition. Oxford, UK: Oxford University Press.
Cinco-Ley, H. and Samienego V.F. 1982. Pressure Transient Analysis forNaturally Fractured Reservoirs. Paper SPE 11026 presented at the SPEAn-nual Technical Conference and Exhibition, New Or-leans, 26-29 September.doi: 10.2118/11026-MS.
Da Prat, G., Cinco-Ley, H., and Ramey, H.J. Jr. 1981. Decline Curve Analysis Using TypeCurves for Two-Porosity Systems. SPE J. 21 (3):354-362. SPE-9292-PA. doi: 10.2118/9292-PA.
de Swaan O.A. 1976. AnalyticalSolutions for Determining Naturally Fractured Reservoir Properties by WellTesting. SPE J. 16 (3): 117-122; Trans., AIME,261. SPE-5346-PA. doi: 10.2118/5346-PA.
Ehlig-Economides, C.A. and Ramey, H.J. Jr. 1981. Pressure Buildup for Wells Produced ata Constant Pressure. SPE J. 21 (1): 105-114.SPE-7985-PA. doi: 10.2118/7985-PA.
Hagoort, J. 2008. StabilizedWell Productivity in Double-Porosity Reservoirs. SPE Res Eval &Eng 11 (5): 940-947. SPE-110984-PA. doi:10.2118/110984-PA.
Moench, A.F. 1984. Double-Porosity Models for aFissured Groundwater Reservoir with Fracture Skin. Water Resour.Res. 20 (7): 831-846. doi:10.1029/WR020i007p00831.
Najurieta, H.L. 1980. A Theoryof Pressure Transient Analysis in Naturally Fractured Reservoirs. J PetTechnol 32 (7): 1241-1250. SPE-6017-PA. doi:10.2118/6017-PA.
Ozkan, K., Ohaeri, U., and Raghavan, R. 1987. Unsteady Flow to a Well Produced at aConstant Pressure in a Fractured Reservoir. SPE Form Eval 2 (2): 186-200. SPE-9902-PA. doi: 10.2118/9902-PA.
Sageev, A., Da Prat, G., and Ramey, H.J. Jr. 1985. Decline Curve Analysis forDouble-Porosity Systems. Paper SPE 13630 presented at the SPE CaliforniaRegional Meeting, Bakersfield, California, 27-29 March. doi:10.2118/13630-MS.
Serra, K.V., Reynolds, A.C., and Raghavan, R. 1983. New Pressure Transient AnalysisMethod for Naturally Fractured Reservoirs. J Pet Technol 35 (12): 2271-2283. SPE-10780-PA. doi: 10.2118/10780-PA.
Stehfest, H. 1970. Algorithm 368: Numericalinversion of Laplace transforms. Communications of the ACM 13 (1): 47-49. doi: 10.1145/361953.361969.
Streltsova, T.D. 1983. WellPressure Behavior of a Naturally Fractured Reservoir. SPE J. 23 (5): 769-780. SPE-10782-PA. doi: 10.2118/10782-PA.
Uraiet, A.A. and Raghavan, R. 1980. Pressure Buildup Analysis for a WellProduced at Constant Bottomhole Pressure. J Pet Technol 32 (10): 1813-1824. SPE-7984-PA. doi: 10.2118/7984-PA.
van Everdingen, A.F. 1953. The Skin Effect and Its Influence on theProductive Capacity of a Well. SPE-203-G. Trans., AIME, 198:171-176.
Warren, J.E. and Root, P.J. 1963. The Behavior of Naturally FracturedReservoirs. SPE J. 3 (3): 245-255; Trans., AIME,228. SPE-426-PA. doi: 10.2118/426-PA.