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XC气田须五段气藏水平井井壁稳定性分析.docx

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XC气田须五段气藏水平井井壁稳定性分析 Title:AnalysisofWellboreStabilityintheFive-StageReservoirsoftheXCGasField Abstract: Thestabilityofwellboresiscrucialfortheefficientandsafeexploitationofhydrocarbonreservoirs.Inthisstudy,weanalyzethestabilityofwellboresinthefive-stagereservoirsoftheXCGasField.ThispaperprovidesanoverviewoftheXCGasField,followedbyanin-depthanalysisofwellborestabilityfactorssuchasin-situstress,porepressure,rockmechanics,anddrillingfluidproperties.TheanalysisaimstoassessthepotentialissuesrelatedtowellborestabilityintheXCGasFieldandrecommendsuitablemitigationmeasures. 1.Introduction: TheXCGasFieldischaracterizedbyfive-stagereservoirs,whichposeuniquechallengesintermsofwellborestability.Thispaperaimstoanalyzethestabilityofwellboresinthesereservoirsbyconsideringvariousfactorsthatinfluencewellborestability. 2.In-SituStressAnalysis: Understandingthein-situstressdistributioniscrucialforensuringwellborestability.Thissectiondiscussestechniquesforestimatingin-situstressandprovidesinsightsintothestressregimeintheXCGasField. 3.PorePressureAnalysis: Porepressureplaysasignificantroleinwellborestabilityasitaffectstheeffectivestressesandrockstrength.Thissectionexaminesdifferentmethodsforporepressureevaluationanddiscussesthevariationsofporepressureinthefive-stagereservoirs. 4.RockMechanics: ThemechanicalpropertiesoftherocksintheXCGasField,suchasbrittleness,strength,andelasticproperties,greatlyinfluencethewellborestability.Thissectionpresentsananalysisofrockmechanicsparametersobtainedfromcoresamplesanddiscussestheirimplicationsforwellborestability. 5.DrillingFluidProperties: Thepropertiesofdrillingfluidshaveadirectimpactonwellborestability.Thissectionexplorestheeffectsofdrillingfluidproperties,suchasrheologicalparameters,density,andfiltrationcharacteristics,onwellborestability.ItalsodiscussestheselectionofsuitabledrillingfluidsfortheXCGasField. 6.WellboreStabilityAnalysis: Basedontheanalysisofin-situstress,porepressure,rockmechanics,anddrillingfluidproperties,thissectionevaluatesthepot