第30卷第3期DevelopmentcharacteristicsofshalefractureandmaincontrollingfactorsinDingshan-DongxiareaXIEJiatong1，2(1.SINOPECExplorationCompany,Chengdu610041,China;2.SchoolofGeoscienceandTechnology,SouthwestPetroleumUniversity,Chengdu610500,China)Abstract:BasedontheobservationandstatisticsofthefracturecharacteristicsofthesurfaceoutcropsandcoresofLongmaxiFormationshaleinDingshan-Dongxiarea,southeastSichuan,andreferringtotheexperimentaltestdataofvarioussamples,thefracturesdevelopmentcharacteristicsandmaincontrollingfactorsarestudiedandanalyzed,andtheimpactoffracturesongasbearingpropertyisdiscussed.TheresultsshowthattheshalefracturesofLongmaxiFormationinthestudyareaaremainlyhighanglefractures,mainlyshearfracturesandformedinthreestages.FracturesofthefirststageareaffectedbytheSEdirectionstress,formingtheNEdirectionfractures.ThesecondandthirdstagesofthefracturesareaffectedbytheNEdirectionstress,formingtheNWdirectionfractures.Fracturedevelopmentisaffectedbymanyfactorssuchastectonism,rockthickness,mineralcompositionandorganiccarboncontent,amongwhichtectonismismainlyaffectedbyfoldsandfaultlocations.Amongnonstructuralfactors,thehigherthecontentofbrittlemineralsinmineralcomponents,theeasiertherockformationisbroken,andthemoredevelopedthefracturesare.Atthesametime,thehighcontentoforganiccarbonalsopromotesthedevelopmentoffractures.ThedevelopmentoffracturesinLongmaxiFormationinstudyareaplaysanimportantroleinshalegasstorageandmigration,andplaysacrucialroleinimprovingshalegasproductionandgasbearingcapacity.Keywords:fracturedevelopmentcharacteristics;maincontrollingfactor;shale;LongmaxiFormation;Dingshan-Dongxiarea丁山-东溪地区页岩裂缝发育特征及主控因素谢佳彤1，2（1.中国石化勘探分公司，四川成都610041；2.西南石油大学地球科学与技术学院，四川成都610500）基金项目：国家科技重大专项专题“四川盆地重点地区地应力与裂缝发育规律及评价方法研究”（2017ZX05036-003-003）收稿日期：2022-09-09；改回日期：2023-01-06。第一作者：谢佳彤，女，1992年生，副研究员，博士，主要从事页岩气地质综合研究工作。E-mail...
