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1、老油田開發(fā)后期精細(xì)開采固井技術(shù)第34卷第2期2012年3月石油鉆采工藝OILDRILLING&PRODUCTIONTECHNOLOGYVo1.34No.2March2012文章編號(hào):1000—7393(2012)02—0048—04老油田開發(fā)后期精細(xì)開采固井技術(shù)張宏軍(勝利石油管理局黃河鉆井固井公司,山東東營257064)引用格式:張宏軍.老油田開發(fā)后期精細(xì)開采固井技術(shù)[J].石油鉆采5-.藝,2012,34(2):48—51.摘要:開發(fā)5O余年的老油田,經(jīng)過上產(chǎn),高產(chǎn),穩(wěn)產(chǎn)開發(fā),多次加密鉆井,
2、高壓注水注聚,高強(qiáng)度開采,縱向上形成了高壓低滲,低壓高滲,異常高壓,欠壓和低壓漏失,多壓力層系共存的局面,給后期剩余油的開采帶來了許多難題.在分析,實(shí)驗(yàn)各種影響因素的基礎(chǔ)上,以系統(tǒng)工程為指導(dǎo),注重勘探,開發(fā),地質(zhì)與鉆井,完井,固井工程的結(jié)合,以保證不同壓力,不同滲透率層系之間的有效密封,保證一,二界面的水泥膠結(jié)質(zhì)量為目的,采用了適合油藏特征,保護(hù)儲(chǔ)層,提高采收率的復(fù)雜結(jié)構(gòu)井鉆井,特殊工藝完并固井新技術(shù)及多功能水泥漿體系,一界面固井質(zhì)量優(yōu)良率提高26.3%,二界面固井質(zhì)量提高18.5%.實(shí)現(xiàn)了不同壓力層系
3、之間,特別是薄油層,韻律層之間的有效封隔,滿足了老油田開發(fā)后期高效,精細(xì)開采的要求.關(guān)鍵詞:老油田;精細(xì)開發(fā);固井技術(shù);多功能水泥漿中圖分類號(hào):TE256文獻(xiàn)標(biāo)識(shí)碼:AFinecementingtechniqueformaturedoilfieldproductiontailZHANGH0ngjun(HuangheDrilling&CementingCompany,ShengliOilfieldBureau,Dongying257064,China)Abstract:Forthemamredfi
4、eldsproducedformorethan50years,theyhavegonethroughtheprocessesofproductionascending,peakoilrate,stableproduction,multi—timedrillinginfillwells,pressuredwater/polymerinjection,andhighstrengthproduction.Andsomeunfavorablefeatureshavebeenformedvertically,wh
5、icharehighpressureandlowpermeability,lowpressureandhighperme—ability,ultrahighpressure,underpressureandlowpressureloss,multipressurestratacoexistence,etc.,resultinginalotofdifficultiesofrecoverresiduleoilinproductiontailstage.Basedonanalyzingandexperimen
6、tallystudingtheeffectfactors,takingsystemengineeringasdirection,stressingthecombinationofexploration,development,geology,drilling,completionandcementing,thecomplexstruc—turewelldrilling,thespecialprocesscompletionandcementingtechniques,andmulti-functions
7、lurryaretaken,whichcansuitforthereservoircharacteristics,protectformation,andenhanceoilrecovery,withtheaimofguaranteetheeffectivesealingbetweendifferentpressureordifferentpermeabilitylayersandtheconsolidatingqualitybetweenthefirstandsecondinterfaces.Ther
8、esultsshowthatthefirstinterfacecementingqualityexcellenceratioincreaseby26-3%.andthesecondinterfacecementingqualityincreaseby18.5%.Itiscarriedoutthattheeffectseparationbetweendifferentpressurelayers,expeciallybetweenthinla
