b'STAATSOLIE MAATSCHAPPIJ SURINAME N.V.NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS FOR THE YEAR ENDED DECEMBER 31, 2020 (Continued)Thelong-termPIRANYHNo.6FuelOil1.0% As the economic assumptions used may change Sulphurcrudeoilprices(asperDecember18, and as additional geological information is obtained 2020)areusedintheestimationofthecommercial duringtheoperationofafield,estimatesofreserves are listed in the table below. recoverable reserves may change. Such changes mayimpacttheGroupsreportedfinancialpositionYearUS$/bbl andresults,whichinclude:2021 49.30 Thecarryingvalueofexplorationandevaluationassets;oilproperties;property,plantand2022 48.30 equipment;andgoodwillmaybeaffectedduetochangesinestimatedfuturecashflows.202352.24 Depreciationandamortizationchargesinthe2024 51.57 consolidatedstatementofprofitorlossmay2025 48.29 change where such charges are determined usingtheUOPmethod,orwheretheusefullifeof2026 48.61 the related assets change (Section 4.1).2027 49.33 Provisionsfordecommissioningmayrequire2028 50.06 revisionwhere changes to reserves estimates affect expectations about when such activities will 2029 50.82 occur and the associated cost of these activities (Section4.9).2030 51.59203152.51Therecognitionandcarryingvalueofdeferredtax assets may change due to changes in the 203253.45judgmentsregardingtheexistenceofsuchassetsand in estimates of the likely recovery of such 203354.41assets (Section 3.3).2034 55.392035 56.052036 56.712037 57.382038 58.05ThecarryingamountofoilpropertiesatDecember31,2020isshowninSection4.1.74 STAATSOLIE 2020 ANNUAL REPORT'