ISSN1008-9446CN13-1265/TE承德石油高等专科学校学报JournalofChengdePetroleumCollege第25卷第2期,2023年4月Vol.25,No.2,Apr.2023渤海A油田潜山裂缝发育特征及预测赵汉卿,李卓,郭诚,张立安,刘超(中海石油(中国)有限公司天津分公司,天津300459)摘要:渤海A油田位于渤海湾盆地渤南低凸起潜山带中部,为古潜山裂缝油田,裂缝的发育特征及预测对油田开发意义重大。综合利用岩心、镜下薄片、倾角测井资料和地震资料,分析了A油田潜山裂缝发育特征。分析表明其储层主要为碳酸盐岩沉积,裂缝明显存在多期作用,裂缝基本上沿北东和北西两个方向展布,这与渤海湾盆地应力场变化相吻合;裂缝多为高角度裂缝,裂缝角度多在45°以上(寒武系凤山组裂缝甚至超过了80°);应用地震资料,以地震属性和反演方法相结合,对A油田下古生界裂缝发育带进行半定量化预测。A油田下古生界上油层组裂缝较为发育,平面上主要发育在油田中南部,下油层组裂缝发育较弱,这为油田后期综合调整指明了方向,也为同类油田的裂缝预测提供思路。关键词:古潜山;裂缝发育;裂缝预测;地震属性;渤海湾盆地中图分类号:P618.13文献标志码:A文章编号:1008-9446(2023)02-0004-07FractureDevelopmentCharacteristicsandPredictionofBuriedHillinBohaiAOilfieldZHAOHan-qing,LIZhuo,GUOCheng,ZHANGLi’an,LIUChao(CNOOCTianjinBranch,Tianjin300459,China)Abstract:BohaiAOilfieldislocatedinthemiddleofBonanlowupliftburiedhillbeltinBohaiBayBasin,whichisafracturedburiedhilloilfield.Itsfracturedevelopmentcharacteristicsandpredic-tionhavegreatsignificanceinoilfielddevelopment.Basedoncore,thinsectionundermicroscope,diplogandseismicdata,thispaperanalyzesfracturedevelopmentcharacteristicsofburiedhillinAOilfield.Studyshowsthesedimentaryreservoirsaremainlycarbonaterocks,andthefracturesaredistributedalongtheNEandNWdirections,whichisconsistentwiththemulti-stagestressfieldchangesinBohaiBayBasin;mostofthefracturesarehighanglefractures,andthefractureangleismorethan45°(thefractureofCambrianFengshanformationisevenmorethan80°).Byusingseis-micdata,combiningseismicattributeswithinversionmethod,semiquantitativepredictionoffrac-turedevelopmentzoneofLowerPaleozoicinAOilfieldiscarriedout.Resultsshowthatfracturesintheupperoilgrouparerelativelydeveloped,...
