四川盆地长芯1井下志留统龙马溪组页岩气储层特征研究

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1、1000-0569/2013/029(03)-1073-86ActaPetrologicaSinica岩石学报四川盆地长芯1井下志留统龙马溪组页岩气*储层特征研究1，21＊＊31，21，245陈文玲周文罗平邓虎成李沁单蕊戚明辉1，21＊＊31，21，245CHENWenLing，ZHOUWen，LUOPing，DENGHuCheng，LIQin，SHANRuiandQIMingHui1.油气藏地质及开发工程国家重点试验室，成都理工大学，成都6100592.成都理工大学能源学院，成都6100593.中国石油勘探开发研究院

2、塔里木分院，北京1000834.中国煤炭科工集团西安研究院，西安7100775.四川省科源工程技术测试中心，成都6100911.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation，ChengduUniversityofTechnology，Chengdu610059，China2.CollegeofResources，ChengduUniversityofTechnology，Chengdu610059，China3.TarimBasinBranch

3、，RIPEDofPetroChina，Beijing100083，China4.Xi’anResearchInstituteofChinaCoalTechnology＆EngineeringGroupCorp，Xi’an710077，China5.KeyuanEngineeringTechnicalTestCenterofSichuanProvince，Chengdu610091，China2012-06-21收稿，2013-01-26改回.ChenWL，ZhouW，LuoP，DengHC，LiQ，ShanRandQi

4、MH.2013.AnalysisoftheshalegasreservoirintheLowerSilurianLongmaxiFormation，Changxin1well，SoutheastSichuanBasin，China.ActaPetrologicaSinica，29(3):1073－1086AbstractTheshalethicknessintheLongmaxiFormation，LowerSilurianisapproximately147minChangxin1well，Changningstru

5、cture，southeasternregionoftheSichuanBasin.LongmaxiFormationlithofaciesincludelaminatedmudstone/shale，laminatedlimemudstone/shale，laminatedandsiltymudstone/shale，alcareousconcretionsandpyriteband.Thebottom30mofwhichisorganic-richlaminatedmudstone/shale，whosequart

6、z，feldsparandpyriteaveragecontentis51.9%，theclaymineralaveragecontentis24.7%andthecalciteanddolomiteaveragecontentis23.4%，whichissimilarwiththetypicalAmericanshalereservoirs.Theaverage－32porosityofChangxin1wellis5.68%andtheaveragepermeabilityis5.96×10μm.Theyarep

7、ositivelycorrelated.ThemicroporesintheshaleobservedintheSEMaredominatedthemineralsintergranular(dissolution)pores，intergranulargaps，intragranularpores，theorganicmattermicro-poresandmicro-fractures.BasedontheMercuryintrusionporosimetry，Themaxoftheradiusoftheporet

8、hroatis33nm，theaverageis10nm.Thestudyshowsthatthedevelopmentofmicro-poresofmarineshalegasreservoirintheLongmaxiFormationinChangxin1wellarecontrolledbylithology，diagen