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1、老油田开发后期精细开采固井技术第34卷第2期2012年3月石油钻采工艺OILDRILLING&PRODUCTIONTECHNOLOGYVo1.34No.2March2012文章编号:1000—7393(2012)02—0048—04老油田开发后期精细开采固井技术张宏军(胜利石油管理局黄河钻井固井公司,山东东营257064)引用格式:张宏军.老油田开发后期精细开采固井技术[J].石油钻采5-.艺,2012,34(2):48—51.摘要:开发5O余年的老油田,经过上产,高产,稳产开发,多次加密钻井,高压注水注聚,高强度开采,纵向上形成了高压低渗,低压高渗,异常高压,欠压
2、和低压漏失,多压力层系共存的局面,给后期剩余油的开采带来了许多难题.在分析,实验各种影响因素的基础上,以系统工程为指导,注重勘探,开发,地质与钻井,完井,固井工程的结合,以保证不同压力,不同渗透率层系之间的有效密封,保证一,二界面的水泥胶结质量为目的,采用了适合油藏特征,保护储层,提高采收率的复杂结构井钻井,特殊工艺完并固井新技术及多功能水泥浆体系,一界面固井质量优良率提高26.3%,二界面固井质量提高18.5%.实现了不同压力层系之间,特别是薄油层,韵律层之间的有效封隔,满足了老油田开发后期高效,精细开采的要求.关键词:老油田;精细开发;固井技术;多功能水泥浆中图分类号:
3、TE256文献标识码:AFinecementingtechniqueformaturedoilfieldproductiontailZHANGH0ngjun(HuangheDrilling&CementingCompany,ShengliOilfieldBureau,Dongying257064,China)Abstract:Forthemamredfieldsproducedformorethan50years,theyhavegonethroughtheprocessesofproductionascending,peakoilrate,stableproduc
4、tion,multi—timedrillinginfillwells,pressuredwater/polymerinjection,andhighstrengthproduction.Andsomeunfavorablefeatureshavebeenformedvertically,whicharehighpressureandlowpermeability,lowpressureandhighperme—ability,ultrahighpressure,underpressureandlowpressureloss,multipressurestratacoexis
5、tence,etc.,resultinginalotofdifficultiesofrecoverresiduleoilinproductiontailstage.Basedonanalyzingandexperimentallystudingtheeffectfactors,takingsystemengineeringasdirection,stressingthecombinationofexploration,development,geology,drilling,completionandcementing,thecomplexstruc—turewelldri
6、lling,thespecialprocesscompletionandcementingtechniques,andmulti-functionslurryaretaken,whichcansuitforthereservoircharacteristics,protectformation,andenhanceoilrecovery,withtheaimofguaranteetheeffectivesealingbetweendifferentpressureordifferentpermeabilitylayersandtheconsolidatingqualityb
7、etweenthefirstandsecondinterfaces.Theresultsshowthatthefirstinterfacecementingqualityexcellenceratioincreaseby26-3%.andthesecondinterfacecementingqualityincreaseby18.5%.Itiscarriedoutthattheeffectseparationbetweendifferentpressurelayers,expeciallybetweenthinla
