PRESSURE TRANSIENT ANALYSIS OF HETEROGENOUS RESERVOIRS WITH IMPERMEABILITY BARRIER USING PERTURBATION BOUNDARY ELEMENT METHOD

(整期优先)网络出版时间:2005-01-11
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Thetransientflowmathematicalmodelofarbitraryshapedheterogeneousreservoirswithimpermeabilitybarrierisproposedinthispaper.Inordertoestablishthismodel,theperturbationmethodisemployedandthesolutionofmodelisexpandedintoaseriesinpowersofperturbationparameter.ByusingtheBoundaryElementMethod(BEM)andDuhamelprinciple,wellborepressurewitheffectsofskinsandwellborestorageisobtained.Thetypecurvesareplottedandanalyzedconsideringeffectsofheterogeneity,arbitraryshapeandimpermeablebarriers.Finally,theresultsobtainedbyperturbationboundaryelementmethodiscomparedwiththeanalyticalsolutionandisavailableforthetransientpressureanalysisofarbitraryshapedreservoirs.