渤海海域新生代盆地结构与构造单元划分

225201010中国海上油气CHINAOFFSHOREOILANDGASVol.22No.5Oct.2010*(40802030)()(SC06TJ-TQL-004):,,,(),E-mail:[e-mail]*周心怀1余一欣2,3汤良杰2,3吕丁友1王应斌1(1();2();3())在对渤海海域13条区域地震剖面进行精细解释的基础上,解剖新生代盆地结构特征,确定构造单元划分标准,并进行一二级构造单元划分渤海海域不同地区新生代盆地结构存在较大差异,沉积地层时代和厚度也有所不同根据地质结构和沉积地层的差异,渤海海域可分为辽东湾坳陷(海域)渤中坳陷济阳坳陷(海域)黄骅坳陷(海域)和埕宁隆起(海域)等5个一级构造单元,进一步可划分出二级构造单元35个,其中凸起13个低凸起4个凹陷18个渤海海域新生代盆地地质结构的精细解剖和构造单元划分对优选有利油气勘探区带具有重要指导意义渤海海域新生代盆地盆地结构构造单元,,,[1],,,,,40,[1-3],,,[3],,,,1,20104km2,,NE,,,[4][5][6-7][2,8],,(E2k)(E2-3s)(E3d)(N1g)(N1-2m)(Qp),,NENWEW,,,,213,,,2862010:,;,();,,,,5,14;35,13418(11)5,,4,,,(1)13,,NE(1)23,,,;,,,225:2871(km2)()()(1)(11)2036(12)418(13)1978(14)1350(15)62(16)734(2)(21)927(22)3298(23)780(24)271(25)517()()(1)(11)444(12)1047(13)304(2)(21)2725(22)4308(23)4782()(1)(11)226(12)1208(13)242(14)305(2)(21)8634(22)3342(23)2527()()(1)(11)1189-(12)518(13)745(2)(21)875(22)1087(23)1783(24)3309()()(1)(11)26(2)(21)670(22)1910(23)1783:1,;,,;,;,,,(12),,,,(14)2428,,()(56)NEEW,,(56),,,(1)2,,(1)28820104(1AA),,(5),,NEEW,2,(1),()EW,,EW,,(7),,[9],EW,[10]()NE,()NW,,,4km,1000m(8),,(78)2,,,,,,,225:2898BH-3(1)4(1),()()()()5,,4(2)535,134183:,,,[1].[J].(),2000,14(2):93-99.[2],,.[J].,2001,22(2):14-18.[3],,.[J].,2001,21(4):37-43.[4].[J].,1981,1(1):3-20.[5],,.[J].,2006,28(5):409-413.[6].[J].,2001,23(1):27-31.[7].[J].,2004,31(1):15-22.[8],,.[J].:,1998,34(4):503-509.[9],,.[J].,2001,22(2):19-25.[10],,,.[J].,2009,30(5):654-660.:2010-03-12:2010-04-23(:)CenozoicoffshorebasinarchitectureanddivisionofstructuralelementsinBohaiseaZhouXinhuai1YuYixin2,3TangLiangjie2,3LDingyou1WangYingbin1(1.TianjinBranchofCNOOCLimited,Tianjin,300452;2.StateKeyLaboratoryofPetroleumResourcesandProspecting,ChinaUniversityofPetroleum,Beijing,102249;3.BasinandReservoirResearchCenter,ChinaUniversityofPetroleum,Beijing,102249)Abstract:Basedonarefinedinterpretationof13regionalsismicsectionsinBohaisea,thearchitec-tureofCenozoicoffshorebasinsisanatomized,andthestructuralelementsoffirstandsecondordersaredividedbyestablishingadivisioncriterion.ThereareconsiderabledifferencesintheCenozoicbasinarchitectureamongvariouspartsofBohaisea,withtheirstratigraphicagesandthicknessesquitevariable.Fivefirst-orderstructuralelementscanbedividedinBohaisea,includingLiaodongwan(offshore),Bozhong,Jiyang(offshore)andHuanghua(offshore)depressionsandChengninguplift(offshore),accordingtothevariabilityingeologicalarchitectureandsedimentarysequence.Furthermore,thirty-fivesecond-orderstructuralelementshavebeenrecognized,includingthirteenrises,fourlowrisesandeighteensags.Thisre-finedanatomyofCenozoicbasinarchitectureandthedivisionofstructuralelementsmaybeimpor-tanttoguidingoptimizationoffavourableexplora-tionplaysinBohaisea.Keywords:Bohaisea;Cenozoicbasin;basinarch-itecture;structuralelement