QHD32-6堵水酸化联作技术

104d8dd2020/1/10堵水酸化联作工艺技术研究ResearchonWaterShutoff－AcidizingJointOperationTechnologyinQHD32-6OilField西南石油学院石油工程学院SOUTHWESTPETROLEUMINSTITUTE2003.6.17,TangGuTianJin204d8dd2020/1/10概述Introduction储层特点及伤害因素、开采现状、ReservoirCharacter，FormationDamageFactorsandProductionBehavior堵水酸化酸型及浓度确定DeterminingofAcidtypeandConcentration堵水酸化添加剂单项性能评价、酸液配方体系优选、性能评价Acidizingadditivesperfomanceevaluation,Acidformulaedesignanditsperformanceevaluation酸流动效果评价Acidflowtest堵剂体系合成、性能评价和流动效果评价Developmentofwatershutoffagent，perfomanceevaluationandcoreflowtest堵水酸化注入强度和速度研究DeterminingofInjectionRateandIntensity施工参数选择DeterminingofJobparameters实施工艺及方案OperationTechnologyandjobProgramme结论Conclusions汇报提纲Outline304d8dd2020/1/10概述－立项背景Backgroud海洋油田开发特殊性需要加快采油速度EnhanceproductionrateQHD32-6油田储层易伤害因素多，需要解堵RemovealofFormationDamage-Acidizing油田开发早期出水，甚至水淹，产油量递减速度快Oilproductiondeclineduetowaterincursion-WaterControlling构造内幕复杂，受管柱等条件限制，机械卡水局限性强Complicatedreservoir，mechanicalwatershutoffmeasuresarelimitedforpracticing堵水酸化措施Waterpluggingandacidizing增油控水LowerwatercutEnhanceoilproductionrate404d8dd2020/1/10概述－主要工作Mainworkofthestudy堵水酸化酸液体系Acidfluidsystem堵水酸化堵剂体系Watershutoffagentsystem堵水酸化实施工艺及参数Technologyofcombinationprocess储层及开采特点reservoir604d8dd2020/1/10概述－技术关键TechnicalKeys两大类工作液体系的选择和研制DevelopmentofwaterShutoffagentsystemandacidformulaesystem堵液与酸液体系的适应性CompatbilityofwaterShutoffagentsystemandacidformulaesystem堵剂体系的交联时间确定CrosslinkingTimeofwaterShutoffagentsystem堵剂体系的强度和耐冲刷性Strengthandanti-washwaypropetyofwaterShutoffagentsystemand堵剂体系的选择性进入油藏Goodselectivityforinjectionunderreservoirconditions堵液前置液保护技术Prefluidprotectingtechniquebeforeinjectingpluggingfluid合理施工规模确定DeterminingofReasonablescaleoftreatment施工压力确定DeterminingofJobPressure施工工艺和方式确定OperatingTechnologyandMethod704d8dd2020/1/10概述－研究思路ResearchApproach804d8dd2020/1/10储层特点、伤害因素ReservoirBehavoir，FactorsofFormationDamage多断层Richfaults河流相沉积Fluvialdeposit岩石疏松Looserock多油水系统Richoil-watersystem以边、底水为主Edgewater,Bottomwater底水油藏油柱高度低LowoilColum(5~15m)储层垂向渗透率高(Kv/Kh=0.7)油水粘度比大uo/uw=100－500重(稠）油Heavycrudeoil904d8dd2020/1/10•储层岩芯电镜扫描分析TheSEMAnalysisofReservoirCoresQHD32-6-7井岩芯扫描电镜分析结果表明：TheSEManalysisshowsthat:•储层岩石疏松，孔隙发育，粒间孔为主，溶蚀形成的次生孔隙所占比例大，孔隙的连通性良好。Therockofreservoirhasunconsolidatedstructure,growthpore,largequantityofintergranularpores,highratioofsecondaryporeformedbycorrosion,betterporeconnectivity•充填物主要为伊利石和高岭石，且有少量蒙伊混层填隙物，孔隙中可见书状堆迭的高岭石，部分粘土的表面有少量莓球状黄铁矿。•ThefillerismainlyIandK,littleM/I.Illiteusuallyexistsamonggrainswithclaybridgeshape.Kaolinitewithbookshapemayexistinpore.Theporefilledusuallyisgrowth.Thesurfaceofsomeclayhasafewpyriteswithberryshape.1004d8dd2020/1/10一定水敏性伤害晶格膨胀或分散堵塞孔喉WaterSensitivityDamage一定流速敏感性微粒运移VelocitySensitivity一定盐敏性粘土矿物缩聚、分散、脱落，运移堵塞孔喉SaltSensitivity一定碱敏性粘土矿物解离和胶结物溶解后释放出微粒AlkaliSensitivity酸敏性产生氢氧化铁沉淀AcidSensitivity较强的出砂趋势SandingTendency储层伤害潜在因素分析AnAnalysisofPotentialFactorsforFormationDamage1104d8dd2020/1/10储层伤害机理TheMechanismofFormationDamage钻井泥浆伤害TheDrillingMudDamage注水泥伤害TheCementingDamage(清洗液与隔离液、水泥浆、挤水泥、射孔)完井及修井液伤害TheDamageofWellCompletionandtheWell-WorkoverLiquid砾石充填中的伤害TheDamageofGravelPack增产过程中的伤害(酸化、堵水等)TheDamageDuringStimulation(acidizing，waterpluggingetc)1204d8dd2020/1/10开采特点ProductionBehaviour欠产原因ReasonsofLowProduction含水上升快HighWaterCut边水推进(EdgeWater)底水锥进(BottomWater)水窜(WaterBreakthrough)储层伤害FormationDamage过高的比采油指数Over-designedProductionIndex1304d8dd2020/1/10出水类型－边水推进TypeofWaterOut－EdgeWaterEdgeWaterEdgeWater秦皇岛32-6油田北区明下段油Ⅳ组第一小层含油组面积图Rr4structuremapOWC-1267mOWC-1267mOWC-1267mEdgeWaterEdgeWater1404d8dd2020/1/10出水类型－边水推进TypeofWaterOut－EdgeWaterA8射孔00000000000000防砂防砂防砂油组Nm0Nm1Nm2Nm3Nm4Nm5小层1236611233433441222231122211234445DENRSCNGRRD结论井深950100010501100115012001250130013501400SPA9DENCNRSRD射孔0000000000000防砂防砂防砂防砂防砂油组Nm0Nm1Nm2Nm3Nm4Nm5小层12334566133421122111223341GR结论井深950100010501100115012001250130013501400SPA10RD结论井深95010001050110011501200125013001350GRRSSPDENCN小层223446133423123油组Nm0Nm1Nm2Nm3Nm4防砂防砂防砂防砂防砂射孔000000000B5RD结论井深950100010501100115012001250130013501400SPGRRSCNDEN小层244+56233233422312331油组Nm0Nm1Nm2Nm3Nm4防砂防砂防砂防砂防砂射孔00000000000B6DENCNRSGR射孔00000000000油组Nm0Nm1Nm2Nm3Nm4小层246133333341122211313RD结论井深95010001050110011501200125013001350SP防砂防砂防砂防砂B7DENCNRSGR射孔0000000000000防砂防砂防砂防砂油组Nm0Nm1Nm2Nm3Nm4小层2377883342122321111RD结论井深95010001050110011501200125013001350SPBW1RD结论井深9501000105011001150120012501300135014001450SPGRRSCNDEN油组Nm1Nm2Nm3Nm4Nm5NgI防砂射孔小层22713312232111341112251B8DENCNRSGR射孔00000防砂防砂防砂油组Nm0Nm1Nm2Nm3Nm4小层226113331231111231RD结论井深95010001050110011501200125013001350SPB7BW1B8EdgeWaterEdgeWater1504d8dd2020/1/10出水类型－边水推进TypeofWaterOut－EdgeWater1604d8dd2020/1/10出水类型－底水锥进TypeofWaterOut－ConingofBottomWater1704d8dd2020/1/10出水类型－底水锥进TypeofWaterOut－ConingofBottomWater1804d8dd2020/1/10出水类型－底水锥进TypeofWaterOut－ConingofBottomWater1904d8dd2020/1/10出水类型－水窜？TypeofWaterOut－waterBreakthrough2004d8dd2020/1/10已采取的增产措施StimulationshavePracticed机械卡水Y分采效果好，丢手管柱差，7”（56口）套管井受限Mechanicwatershutoff酸化，已显著增产效果Acidizing,yielddesiredresult换大泵UsinglargeFlowrat