威远地区页岩气水平钻井井壁稳定影响因素分析

威远地区页岩气水平钻井井壁稳定影响因素分析Title: Analysis of Factors Influencing Wellbore Stability in the Weiyuan Shale

威远地区页岩气水平钻井井壁稳定影响因素分析 Title:AnalysisofFactorsInfluencingWellboreStabilityinthe WeiyuanShaleGasHorizontalDrilling Abstract: Theexplorationandproductionofshalegashavegained significantattentioninrecentyearsduetoitspotentialasanew andabundantenergysource.InareaslikeWeiyuan,theextraction ofshalegasrequireshorizontaldrillingtechniquesforimproved productionefficiency.However,wellborestabilityremainsamajor concernduringthedrillingprocess.Thispaperaimstoanalyzethe variousfactorsthatinfluencewellborestabilityintheWeiyuan shalegasregionandproposepotentialmitigationmeasures. 1.Introduction 1.1Background 1.2Objectives 2.LiteratureReview 2.1ShaleGasExtractionTechniques 2.2WellboreStabilityFactors 2.2.1MechanicalPropertiesofShale 2.2.2PorePressureandFluidFlow 2.2.3RockBrittleness 2.2.4In-situStressandStressAnisotropy 3.Methodology 3.1DataCollection 3.2AnalysisTechniques 4.FactorsInfluencingWellboreStability 4.1MechanicalPropertiesofShale 4.1.1ShaleComposition 4.1.2ShaleStrength