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一种利用注采数据评价水驱油藏井间连通性的新方法.docx

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一种利用注采数据评价水驱油藏井间连通性的新方法 Title:ANewMethodforEvaluatingInterwellConnectivityinWaterfloodedReservoirsusingPressureTransientAnalysis Abstract: Waterfloodingisawidelyusedmethodforoptimizingoilrecoveryinreservoirs.Evaluatingtheinterwellconnectivityiscrucialtoassesstheeffectivenessofwaterfloodingandidentifyareaswithpoorconnectivity.Inthispaper,weproposeanewmethodforevaluatinginterwellconnectivityinwaterfloodedreservoirsusingpressuretransientanalysisofinjectionandproductiondata.Themethodologyutilizestheinformationobtainedfrompressureresponsesinthereservoirtoinferthedegreeofconnectivitybetweenwells.Thispaperpresentsthetheoreticalbackground,thestep-by-stepimplementationofthemethod,andacasestudytodemonstrateitsapplicability. 1.Introduction Theobjectiveofwaterfloodinginoilreservoirsistoimprovesweepefficiencyandsweeppatternsoftheinjectedfluidsbyenhancingtheinterwellconnectivity.Understandingtheconnectivitybetweentheinjectionandproductionwellsiscrucialtooptimizeproductionandincreaseoilrecovery.Traditionalmethodsforevaluatinginterwellconnectivity,suchastracertestingandproductiondataanalysis,havelimitationsinaccuratelydeterminingtheconnectivityincomplexreservoirsystems.Hence,thereisaneedforanewmethodthatprovidesamorereliableandaccurateassessmentofinterwellconnectivity. 2.Methodology Theproposedmethodinvolvesutilizingpressuretransientanalysistechniquestoevaluateinterwellconnectivity.Thestepsinvolvedinthemethodologyinclude: -Datacollectionandpreparation:Collectinginjectionandproductiondatafromwaterfloodingoperationsandpreparingthemforanalysis. -Pressuretransientanalysis:Analyzingpressureresponsesinthereservoirtoidentifypressureinterferenceandcharacterizetheconnectivitybetweenwells. -Pressureinterferencediagnosticplots:Constructingdiagnosticplotsusingpressuredatatovisuallyrepresenttheconnectivitybetweeninjector-producerpairs. -Quantitativeassessmentofconnectivity:Estimatingtheconnectivityindexbasedonpressureresponsesandcomparingitwithestablishedcriteriaforeffectiveinterwellconnectivit