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1、·44·天然氣工業(yè)2O13年8月蘇里格氣田水平井高效建產(chǎn)技術(shù)楊志倫趙偉蘭陳啟文董瑜張春中國石油長慶油田公司第四采氣廠楊志倫等.蘇里格氣田水平井高效建產(chǎn)技術(shù).天然氣工業(yè),2013,33(8):44—48.摘要實(shí)踐證明,蘇里格氣田采用常規(guī)開發(fā)技術(shù)難以實(shí)現(xiàn)高效開發(fā)。面對這一開發(fā)難題,近年來以開發(fā)試驗(yàn)區(qū)為載體進(jìn)行了針對低滲透氣田的水平井高效開發(fā)技術(shù)攻關(guān),在氣藏精細(xì)描述、鉆井、儲層改造等關(guān)鍵技術(shù)上均取得了新的突破,形成了以水平井井位優(yōu)選及部署、地質(zhì)導(dǎo)向、快速鉆井、儲層保護(hù)及改造等為主體的建產(chǎn)配套技術(shù),即:①逐步形成了水平井選井及部署的5種有利砂體模式、4項(xiàng)部署原則、3種部署方
2、式等3項(xiàng)成熟技術(shù);②水平井入靶及地質(zhì)導(dǎo)向形成了9項(xiàng)關(guān)鍵技術(shù);③快速鉆井形成了靶前距、井身結(jié)構(gòu)、鉆頭選型、鉆具組合、鉆井參數(shù)等優(yōu)化技術(shù);④鉆井和試氣過程中形成了儲層保護(hù)技術(shù);⑤儲層改造形成了工藝優(yōu)選及其相關(guān)工藝措施系列?,F(xiàn)場應(yīng)用結(jié)果表明:所實(shí)施水平井全部獲得成功,平均鉆井周期為57.8d,平均砂層鉆遇率達(dá)80.4,平均無阻流量為55.6×10m。/d,開發(fā)效果良好。水平井高效開發(fā)技術(shù)的目益成熟對同類型氣田的開發(fā)具有指導(dǎo)意義。關(guān)鍵詞鄂爾多斯盆地蘇里格氣田水平井生產(chǎn)能力選井部署快速鉆井儲集層改造保護(hù)D0I:10.3787/j.issn.10000976.2013.08.0
3、08HighefficiencyandproductivitytechnologyforhorizontalwellsintheSuligeGasField,OrdosBasinYangZhilun,ZhaoWeilan,ChenQiwen,DongYu,ZhangChun(N0.4GasProductionPlantofChangqingOizfieldCompany,PetroChina,X’an,Shaanxi710021,China)NATUR.GASIND.VOLUME33,ISSUE8,pp.44—48,8/25/2013.(ISSN1000—0976;
4、InChinese)Abstract:FieldpracticesprovethatitisdifficulttorealizethehighlyefficientdevelopmentoftheSuligeGasField,OrdosBasin,byuseofconventionaltechnologies.Inviewofthis,throughovercomingmanybottleneckingproblemsinachievingthehigh—efficiencydevelopmentofsuchlow—permeabilitygasreservoirs
5、byhorizontalwellsinthosepilottestareas,wemadegreatbreakthroughinac—curategasreservoirdescriptionandsuchkeytechnologiesasdrillingandreservoirreconstruction.Moreover,thesupportingtechnol—ogieswereestablishedwiththecoreofoptimizationandallocationofhorizontalwellsites,geo—steering,rapiddri
6、lling,reservoirpro—tectionandreconstruction.Inparticular,threeseriesofmaturetechnologiesweregraduallydevelopedincludingfivemodesoffavora—blesandbodiesandfourallocationprinciplesandthreeallocationmeans;ninekeytechnologieswereformulatedforthegeo—steeringandtarget—touchingofhorizontalwell
7、s;acompletesetofoptimaldesigntechniqueswasestablishedforrapiddrillingincludingpre—targetdistance,wellprofile,bitselection,drillingtoolscombination,anddrillingparameters;thereservoirprotectiontechnologywasformedduringdrillingandgastesting;andprocessoptimizationandrelevantprocessmeasur