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临兴地区石盒子组低阻气层成因分析.docx

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临兴地区石盒子组低阻气层成因分析 Title:AnalysisoftheFormationofLow-ResistivityGasZonesintheShihetziFormationoftheLinxingArea Abstract: Thepresenceoflow-resistivitygaszonesintheShihetziFormationoftheLinxingareahasattractedsignificantattentionduetoitspotentialimpactontheeconomicfeasibilityofgasreservoirs.Thisstudyaimstoanalyzethepossiblecausesandmechanismsunderlyingtheformationofsuchlow-resistivitygaszones.Theanalysisincludesexaminationofdepositionalenvironment,mineralogicalcomposition,porestructure,andfluidproperties.Thefindingsofthisanalysiscanprovidevaluableinsightsintoreservoircharacterizationandproductionoptimizationstrategies. 1.Introduction: TheLinxingareainChinahasbeenaprolificsourceofnaturalgasreserves,withtheShihetziFormationbeingoneofthemostsignificantreservoirs.However,thepresenceoflow-resistivitygaszoneswithinthisformationposeschallengestoproductionoptimizationandreservoirmanagement.Understandingthefactorscontributingtotheformationoftheselow-resistivityzonesiscrucialforformulatingeffectivedrillingandcompletionstrategies. 2.Methodology: 2.1DepositionalEnvironmentAnalysis: Thedepositionalenvironmentgreatlyaffectstherockcharacteristicsandfluidproperties.Thisanalysisinvolvesexaminingthesedimentaryfacies,depositionalsettings,anddiagenetichistorytoidentifypotentialfactorsinfluencingtheformationoflow-resistivitygaszones. 2.2MineralogicalCompositionAnalysis: ThemineralogyoftheShihetziFormationcanhaveasignificantimpactonitselectricalproperties.X-raydiffraction(XRD)andscanningelectronmicroscopy(SEM)techniquesareemployedtodeterminethedominantmineralsandtheirdistributionwithintheformation. 2.3PoreStructureAnalysis: Theporestructureplaysacrucialroleintheflowoffluidswithinthereservoir.Thisanalysisinvolvesmeasuringtheporesizedistribution,porosity,andpermeabilitythroughtechniquessuchasmercuryintrusionporosimetryandnuclearmagneticresonance(NMR). 2.4FluidPropertiesAnalysis: Thefluidproperties,includingresistivity,conductivity,andsalinity,areanalyzedtounderstandtheirinfluenceontheelectrica