准噶尔盆地春风油田薄浅层超稠油水平井蒸汽驱试验-科技导报.PDF

科技导报2014，32（31） 准噶尔盆地春风油田薄浅层超稠油准噶尔盆地春风油田薄浅层超稠油 水平井蒸汽驱试验水平井蒸汽驱试验 朱桂林，王学忠 中国石化股份有限公司胜利油田分公司新春采油厂，东营257000 摘要摘要 针对准噶尔盆地春风油田多轮次蒸汽吞吐后开发效果变差、亟需开发接替技术的难题，立足于春风油田埋藏浅、高孔高 渗、地层平缓、温度低、储集层薄、地下原油黏度高、热采水平井整体开发的油藏条件，开展了水平井蒸汽驱先导试验。试验区动 4 用地质储量102×10 t，部署注汽井5口，对应21口油井，注汽井、生产井均为水平井，井距100m，排距140m，水平段长度200 m，注汽速度5t/h，采注比1.2。钻打了3口观察井，实时监控油层温度、压力。试验已历时19个月，从单井日产油量、含水、阶段 采出程度、地质储量采出程度等开发指标对比分析看，蒸汽驱见效明显。在考虑稠油递减规律的前提下，蒸汽驱比蒸汽吞吐产量 增幅为48%。证实，薄浅层超稠油水平井蒸汽驱技术切实可行。试验过程中形成了“立足高温微汽窜采油”的开发理念和动态监 控体系、水平井高温汽窜治理、水平井蒸汽吞吐引效、大斜度注采一体化泵等配套技术。 关键词关键词 水平井蒸汽驱；薄浅层超稠油；水平井高温汽窜治理；微汽窜采油；春风油田；准噶尔盆地 中图分类号中图分类号 TE34 文献标志码文献标志码 A doidoi 10.3981/j.issn.1000-7857.2014.31.007 HorizontalSteamFloodingPilotTestforThinShallowSuperHeavy OilofChunfengOilfieldinJunggarBasin ZHUGuilin,WANGXuezhong XinchunOilProductionPlant,ShengliOilfieldCompany,Sinopec,Dongying 257000,China AbstractAbstract Thedeteriorationoftheproductionperformanceaftermulticyclesofsteamhuffandpuffnecessitatesthedevelopmentofthe supersedetechnology,intheChunfengOilfieldinJunggarBasinreservoir.Inviewoftheshallowburialdepth,thehighporehighseepage, thepermeability,thelowformationtemperature(22-28 ℃),thethinreservoirthickness(2-6m,averaging3.5m),thehighunderground crudeoilviscosity(50000-90000 mPa·s),andthehorizontalwellthermalrecovery，thehorizontalsteamfloodingpilottestforthethin shallowsuperheavyoilofChunfengOilfieldisdevelopedandcarriedout.Thetestareaincludesgeologicalreservesof 102×10 t,5steam4 injectionwells,21productionwells.Bothsteaminjectionwellandproductionwellarehorizontalwells,withthewellspacingof 100m,the distancebetweentworowsof 140m,thehorizontalsectionlengthof200m,thesteaminjectionrateof5t/h,theproductioninjectionratio of 1.2.3observationwellsaredrilledtomonitorthereal-timereservoirtemperatureandpressure.Thepilottestlasted 19months，andthe steamfloodingshowsgoodperformanceswiththeindicationsasthesinglewelldailyoilproduction,thewatercut,theperiodic