QHD32-6堵水酸化聯(lián)作技術(shù)

堵水酸化聯(lián)作工藝技術(shù)研究

ResearchonWaterShutoff－Acidizing

JointOperationTechnologyinQHD32-6OilField

西南石油學(xué)院石油工程學(xué)院SOUTHWESTPETROLEUMINSTITUTE2003.6.17,TangGuTianJin2023/2/4概述Introduction儲(chǔ)層特點(diǎn)及傷害因素、開采現(xiàn)狀、ReservoirCharacter，F(xiàn)ormationDamageFactorsandProductionBehavior堵水酸化酸型及濃度確定DeterminingofAcidtypeandConcentration堵水酸化添加劑單項(xiàng)性能評(píng)價(jià)、酸液配方體系優(yōu)選、性能評(píng)價(jià)Acidizingadditivesperfomanceevaluation,Acidformulaedesignanditsperformanceevaluation酸流動(dòng)效果評(píng)價(jià)Acidflowtest堵劑體系合成、性能評(píng)價(jià)和流動(dòng)效果評(píng)價(jià)Developmentofwatershutoffagent，perfomanceevaluationandcoreflowtest堵水酸化注入強(qiáng)度和速度研究DeterminingofInjectionRateandIntensity施工參數(shù)選擇DeterminingofJobparameters實(shí)施工藝及方案OperationTechnologyandjobProgramme結(jié)論Conclusions匯報(bào)提綱Outline2023/2/4概述－立項(xiàng)背景Backgroud海洋油田開發(fā)特殊性需要加快采油速度EnhanceproductionrateQHD32-6油田儲(chǔ)層易傷害因素多，需要解堵RemovealofFormationDamage-Acidizing油田開發(fā)早期出水，甚至水淹，產(chǎn)油量遞減速度快Oilproductiondeclineduetowaterincursion-WaterControlling構(gòu)造內(nèi)幕復(fù)雜，受管柱等條件限制，機(jī)械卡水局限性強(qiáng)Complicatedreservoir，mechanicalwatershutoffmeasuresarelimitedforpracticing堵水酸化措施Waterpluggingandacidizing增油控水LowerwatercutEnhanceoilproductionrate2023/2/4概述－主要工作Mainworkofthestudy堵水酸化酸液體系A(chǔ)cidfluidsystem

堵水酸化堵劑體系Watershutoffagentsystem

堵水酸化實(shí)施工藝及參數(shù)Technologyofcombinationprocess

儲(chǔ)層及開采特點(diǎn)reservoir

2023/2/4儲(chǔ)層分析及傷害機(jī)理堵水酸化堵劑體系研究堵劑巖心流動(dòng)試驗(yàn)研究堵水酸化酸型、添加劑配方體系研究巖心酸流動(dòng)試驗(yàn)研究注入強(qiáng)度和速度研究堵水酸化實(shí)施工藝研究堵液候凝條件和關(guān)井條件研究實(shí)施方案研究概述－主要工作Mainworkofthestudy2023/2/4概述－技術(shù)關(guān)鍵TechnicalKeys兩大類工作液體系的選擇和研制DevelopmentofwaterShutoffagentsystemandacidformulaesystem堵液與酸液體系的適應(yīng)性CompatbilityofwaterShutoffagentsystemandacidformulaesystem堵劑體系的交聯(lián)時(shí)間確定CrosslinkingTimeofwaterShutoffagentsystem堵劑體系的強(qiáng)度和耐沖刷性Strengthandanti-washwaypropetyofwaterShutoffagentsystemand堵劑體系的選擇性進(jìn)入油藏Goodselectivityforinjectionunderreservoirconditions堵液前置液保護(hù)技術(shù)Prefluidprotectingtechniquebeforeinjectingpluggingfluid合理施工規(guī)模確定DeterminingofReasonablescaleoftreatment施工壓力確定DeterminingofJobPressure施工工藝和方式確定OperatingTechnologyandMethod2023/2/4概述－研究思路ResearchApproach2023/2/4儲(chǔ)層特點(diǎn)、傷害因素

ReservoirBehavoir，F(xiàn)actorsofFormationDamage多斷層

Richfaults河流相沉積

Fluvialdeposit巖石疏松

Looserock多油水系統(tǒng)

Richoil-watersystem以邊、底水為主

Edgewater,Bottomwater底水油藏油柱高度低LowoilColum(5~15m)

儲(chǔ)層垂向滲透率高(Kv/Kh=0.7)

油水粘度比大

uo/uw=100－500重(稠）油

Heavycrudeoil2023/2/4儲(chǔ)層巖芯電鏡掃描分析TheSEMAnalysisofReservoirCoresQHD32-6-7井巖芯掃描電鏡分析結(jié)果表明：TheSEManalysisshowsthat:儲(chǔ)層巖石疏松，孔隙發(fā)育，粒間孔為主，溶蝕形成的次生孔隙所占比例大，孔隙的連通性良好。Therockofreservoirhasunconsolidatedstructure,growthpore,largequantityofintergranularpores,highratioofsecondaryporeformedbycorrosion,betterporeconnectivity充填物主要為伊利石和高嶺石，且有少量蒙伊混層填隙物，孔隙中可見書狀堆迭的高嶺石，部分粘土的表面有少量莓球狀黃鐵礦。ThefillerismainlyIandK,littleM/I.Illiteusuallyexistsamonggrainswithclaybridgeshape.Kaolinitewithbookshapemayexistinpore.Theporefilledusuallyisgrowth.Thesurfaceofsomeclayhasafewpyriteswithberryshape.2023/2/4一定水敏性傷害晶格膨脹或分散堵塞孔喉

WaterSensitivityDamage一定流速敏感性微粒運(yùn)移

VelocitySensitivity一定鹽敏性粘土礦物縮聚、分散、脫落，運(yùn)移堵塞孔喉

SaltSensitivity一定堿敏性粘土礦物解離和膠結(jié)物溶解后釋放出微粒

AlkaliSensitivity酸敏性產(chǎn)生氫氧化鐵沉淀

AcidSensitivity較強(qiáng)的出砂趨勢(shì)

SandingTendency儲(chǔ)層傷害潛在因素分析

AnAnalysisofPotentialFactorsforFormationDamage2023/2/4儲(chǔ)層傷害機(jī)理TheMechanismofFormationDamage鉆井泥漿傷害TheDrillingMudDamage

注水泥傷害TheCementingDamage(清洗液與隔離液、水泥漿、擠水泥、射孔)完井及修井液傷害

TheDamageofWellCompletionandtheWell-WorkoverLiquid礫石充填中的傷害TheDamageofGravelPack增產(chǎn)過程中的傷害(酸化、堵水等)TheDamageDuringStimulation(acidizing，waterpluggingetc)2023/2/4開采特點(diǎn)

ProductionBehaviour欠產(chǎn)原因

ReasonsofLowProduction含水上升快HighWaterCut邊水推進(jìn)(EdgeWater)底水錐進(jìn)(BottomWater)水竄(WaterBreakthrough)儲(chǔ)層傷害FormationDamage過高的比采油指數(shù)Over-designedProductionIndex2023/2/4出水類型－邊水推進(jìn)

TypeofWaterOut－EdgeWaterEdgeWaterEdgeWaterEdgeWaterEdgeWater2023/2/4出水類型－邊水推進(jìn)

TypeofWaterOut－EdgeWaterB7BW1B8EdgeWaterEdgeWater2023/2/4出水類型－邊水推進(jìn)

TypeofWaterOut－EdgeWater2023/2/4出水類型－底水錐進(jìn)

TypeofWaterOut－ConingofBottomWater2023/2/4出水類型－底水錐進(jìn)

TypeofWaterOut－ConingofBottomWater2023/2/4出水類型－底水錐進(jìn)

TypeofWaterOut－ConingofBottomWater2023/2/4出水類型－水竄？

TypeofWaterOut－waterBreakthrough2023/2/4已采取的增產(chǎn)措施

StimulationshavePracticed機(jī)械卡水Y分采效果好，丟手管柱差，7”（56口）套管井受限Mechanicwatershutoff酸化，已顯著增產(chǎn)效果Acidizing,yielddesiredresult換大泵UsinglargeFlowrateESP,enhaceproducingpressuredrop轉(zhuǎn)注WaterInjectionChemicalWaterPluggingMeasures&StimulationneededtoReducewatercut,increaseoilproductionWaterPlugging&AcidizingJointOperation2023/2/4(1)QHD32-6油田地質(zhì)條件復(fù)雜，多斷層、河流相沉積、巖石疏松、多油水系統(tǒng)、重(稠）油。整個(gè)構(gòu)造具有埋藏淺；幅度低，規(guī)模大，斷層發(fā)育和局部圈閉多等特點(diǎn)。

ThegeologicsettingofQHD32-6OilFieldiscomplicatedwhichismuchfault,fluvialfacies,unconsolidatedrock,multi-oil-watersystemandheavycrude.Thewholestructurehasthepropertyofshallowdepth,smallrange,largescale,growthfault,andparttrap.(2)QHD32-6油田儲(chǔ)集層埋藏淺，成巖作用較弱，砂巖疏松，儲(chǔ)層物性好，顯示為高孔、高滲儲(chǔ)層，酸化酸型及配方的選擇和實(shí)施應(yīng)注意保護(hù)儲(chǔ)層儲(chǔ)層結(jié)構(gòu)。ThereservoirofQHD32-6OilFieldhasthepropertyofshallowdepth,weakerdiagenesis,unconsolidatedsandstone,goodphysicalproperty,highporosityandpermeability.Weshouldprotectthestructureofreservoirwhenselectingacidfluidtypeinadditionprescriptionandpracticing小結(jié)A

BriefSummary2023/2/4(3)儲(chǔ)層粘土含量主要為蒙脫石、高嶺石、伊利石和伊/蒙混層，酸化過程中可能引起儲(chǔ)層水敏、速敏、酸敏等二次傷害。TheclaymineralsofreservoirsaremainlyMontmorillonite,Kaolinite,IlliteandI/M.Itmayresultinsecondarydamagesuchaswatersensitivity,velocitysensitivity,acidsensitivityduringacidizing(4)QHD32－6油田原油屬常規(guī)稠油,其密度大,粘度高,館陶組原油性質(zhì)好于明下段，地層水性質(zhì)總礦化度不高，屬NaHCO3型。TheoilofQHD32－6belongstoconventionalheavycrude,whichishighdensityandviscosity.ThephysicalpropertyofoilinGuantaoformationisbetterthanthatofMingxiasection.Thetrendisthephysicalpropertyofoilturnsbetterwithdepthincrease.Andtheoriginalsolutiongas–oilratioislower.Boththevolumefactorandcompressibilityfactoraresmaller.ThepropertyofformationwaterofGuantaoformationandMingxiasectionissimilarthatthetotalsalinityislow,whichbelongtoNaHCO3type.小結(jié)A

BriefSummary2023/2/4小結(jié)A

BriefSummary(5)QHD32-6油田出水類型：邊水推進(jìn)EdgeWater底水錐進(jìn)ConingofBottomWater邊水、底水復(fù)合CompositionofEdgeWater，Bottom套管外竄？OutsideCasingBreakthrough？2023/2/4堵水酸化過程中應(yīng)特別注意的問題ProblemsmustbefullyconsideredDuringwaterpluggingandacidizing堵液的選擇性Selectivityofpluggingagent酸液中必須考慮防膨、防微粒運(yùn)移、防止鐵離子沉淀、防止改變巖石的潤(rùn)濕性Clayswelling,theparticulateimmigrating,theironionprecipitationandthechangeofthewettability采用較低濃度的鹽酸預(yù)處理，合理選擇酸液濃度，防止HF溶解碳酸鹽巖造成氟化鈣沉淀LowconcentrationHClacidpretreatmenttodissolvecarbonate;properconcentrationisrequiredtoavoidthefluorationprecipitation.優(yōu)選效能高、與地層流體和巖石相配伍的添加劑Screenoutacidadditivewithgoodperformance合理選擇注酸強(qiáng)度、排液方式和反排壓力，防止出砂Properacidconcentration,flowbackmethodandflowbackhpressure,sandcontrollmusttakenintoaccount2023/2/4堵水酸化酸液體系A(chǔ)cidFormulaeSystem堵水酸化堵劑體系WatershutoffAgentSystem堵水酸化實(shí)施工藝及參數(shù)WaterShutoffandAcidizingJointTechnology儲(chǔ)層及開采特點(diǎn)Reservoir&ProductionBehavoir2023/2/4堵水酸化酸型及濃度確定

DeterminingofAcidtypeandConcentration酸化酸型分析砂巖儲(chǔ)層酸化一般采用HCl和HF進(jìn)行。適于QHD32－6油田酸化酸液體系分析土酸體系:溶蝕能力強(qiáng)，反應(yīng)速度快，對(duì)地層巖石結(jié)構(gòu)破壞嚴(yán)重SHF(SequentialHFProcess)酸液體系：粘土傷害儲(chǔ)層可采用，但施工復(fù)雜高pH值緩速酸體系：自生土酸體系(SGMA,Self-GeneratingMudAcid)和緩沖調(diào)節(jié)土酸系統(tǒng)(BRMA,Buffer-RegulatedMudAcid)氟硼酸(HBF4)體系：用于敏感性較強(qiáng)、粘土含量較高，巖石疏松和易于造成微粒移動(dòng)的地層廣泛使用的深部酸化酸液體系。2023/2/4堵水酸化酸型及濃度確定

DeterminingofAcidtypeandConcentrationDissolutionResult

ofHCltoRock(65℃)鹽酸可溶物的溶蝕率在2.21-3.76%之間.鹽酸對(duì)儲(chǔ)層巖石的溶蝕率較低，碳酸鹽巖含量較少。各井段碳酸鹽巖分布不均勻。隨著濃度的增加，溶蝕率增加，但增加幅度較小。一般鹽酸濃度低于8%時(shí)增加幅度要大些。鹽酸對(duì)巖粉的溶蝕率低，巖芯疏松，建議酸濃度采用5-8%的鹽酸較為合理。2023/2/4堵水酸化酸型及濃度確定

DeterminingofAcidtypeandConcentrationDissolutionResult

ofMudAcidtoRock(65℃)5%HCl＋x%HF

5%HCl＋x%HF

10%HCl＋x%HF

10%HCl＋x%HF

2023/2/4堵水酸化酸型及濃度確定

DeterminingofAcidtypeandConcentrationDissolutionResult

ofHBF4toRock(65℃)5%HCl＋x%HBF4

5%HCl＋x%HBF4

10%HCl＋x%HBF4

10%HCl＋x%HBF4

2023/2/4堵水酸化酸型及濃度確定

DeterminingofAcidtypeandConcentration(1)土酸體系對(duì)巖石結(jié)構(gòu)破壞作用較強(qiáng)，氟硼酸體系則能較好的保持儲(chǔ)層巖石的機(jī)械強(qiáng)度，是適于水敏性較強(qiáng)、巖石疏松和易于造成微粒運(yùn)移的儲(chǔ)層使用的深部酸化酸液體系。對(duì)于QHD32-6油田弱膠結(jié)疏松油藏酸化首選氟硼酸體系為主酸液體系。(2)酸液對(duì)QHD32-6油田儲(chǔ)層巖石溶蝕率順序?yàn)椋篐Cl+HF>HBF4+HCl>HCl。酸化時(shí)推薦酸液濃度為：HCl濃度選用5－8%；HCl+HF濃度選用5%HCl+0.5%－1HF%；HBF4濃度選用5%HCl+5%－8%HBF4較合理。考慮到堵水后堵液對(duì)后續(xù)酸液前緣的稀釋，實(shí)際應(yīng)用時(shí)酸液濃度可適當(dāng)提高

2023/2/4堵水酸化添加劑單項(xiàng)性能評(píng)價(jià)、酸液配方體系優(yōu)選、性能評(píng)價(jià)

Acidizingadditivesperfomanceevaluation,AcidformulaedesignanditsperformanceevaluationAcidfluidperformanceRequirements好的酸液配方，必須具有配伍性好，表面張力低，破乳效率高，能穩(wěn)定膠狀鐵的沉淀和防膨性能等特點(diǎn)。應(yīng)對(duì)酸液中的各種添加劑進(jìn)行單項(xiàng)性能篩選，綜合分析，優(yōu)選出性能好的添加劑。

酸液添加劑單項(xiàng)評(píng)價(jià)主要進(jìn)行：緩蝕劑表面張力測(cè)定鐵離子穩(wěn)定劑測(cè)定破乳試驗(yàn)防膨性能試驗(yàn)和配伍性試驗(yàn)。采用鹽酸、土酸、氟硼酸和混合酸進(jìn)行評(píng)價(jià)：鹽酸采用濃度5%

土酸采用濃度為5%HCl+1%HF

氟硼酸采用6%HBF4+5%HCl的濃度復(fù)合酸采用濃度為5%HCl+4%HBF4+0.5%HF。2023/2/4堵水酸化添加劑單項(xiàng)性能評(píng)價(jià)、酸液配方體系優(yōu)選、性能評(píng)價(jià)

Acidadditivesperfomanceevaluation,Acidformulaedesignanditsperformanceevaluation篩選出以下添加劑系列：Aseriesofacidadditiveswerescreenedout:鐵離子穩(wěn)定劑推薦2種：SA1-7，CT1-7Ferricionstabilizer防膨劑推薦3種：SA-18B或KCS-18、BCS-851Claystabilizer 助排劑推薦2種：SA5-5B最好，其次是CT5-4Cleanupadditive緩蝕劑推薦2種:SA1-3B和CT1-3Corrosioncontrolagent破乳劑推薦3種：SA1-1、SD-1和SD2-11

Demulsifier2023/2/4配方酸液的篩選

SelectionofAcidfluidFormulae酸液名稱Item酸液＋添加劑組合Acid+Additives前置液Padfluid5%HCl1%SA1-7+1%SA1-3B+1%SA1-1+1%SA-18B+0.5%SA5-5B+2%EGMBE+1%膠束劑處理液1TreatmentfluidI處理液2TreatmentfluidII處理液3TreatmentfluidIII5%HCl+6%HBF41%SA1-3B+1%SA1-7+1%SA-18B+1%SA1-1+0.5%SA5-5B+1%EGMBE+1%膠束劑5%HCl+1.0%HF1%SA-18B+1%SA1-3B+0.5%SA5-5B+1%SA1-7+1%SA1-1+1%EGMBE+1%膠束劑5%HCl+5%HBF4+0.5%HF1%SA1-7+1%SA-18B+1%SA1-1+1%SA1-3B+0.5%SA5-5B+1%EGMBE+1%膠束劑后置液Postpadfluid5%HCl1%SA1-3B+1%SA1-7+1%SA-18B+1%SA1-1+0.5%SA5-5B+2%EGMBE+1%膠束劑

綜合儲(chǔ)層巖性分析、巖石結(jié)構(gòu)情況、對(duì)儲(chǔ)層巖石溶蝕試驗(yàn)結(jié)果和酸液添加劑單項(xiàng)評(píng)價(jià)結(jié)果及分析，采用SA系列的添加劑與鹽酸、土酸、氟硼酸和復(fù)合酸互配，組合成以下配方：2023/2/4配方酸液特點(diǎn)

CharacteristicofAcidFormulae對(duì)儲(chǔ)層的弱溶蝕和堵塞物的有效溶蝕，保護(hù)巖石結(jié)構(gòu)，并保證深部穿透；應(yīng)用性能優(yōu)良的緩蝕劑，與酸液具有很好的配伍性和防腐蝕作用；在配方酸液中增加了膠束劑，加強(qiáng)酸液配方與地層流體和有機(jī)物的互溶性，提高酸液對(duì)反應(yīng)產(chǎn)物的懸浮能力；采用性能優(yōu)良的粘土穩(wěn)定劑，提高了配方酸液的防膨性能加強(qiáng)了化學(xué)助排劑性能，應(yīng)用了助排劑和乙二醇丁醚，有效降低酸液的表面張力，提高殘酸返排速度；加強(qiáng)溶解地層孔隙表面的油組分；使地層為水潤(rùn)濕以提高油的相對(duì)滲透率；在配方酸液中增加了膠束劑，加強(qiáng)酸液配方與地層流體和有機(jī)物的互溶性，提高酸液對(duì)反應(yīng)產(chǎn)物的懸浮能力。2023/2/4配方酸液的破乳性能評(píng)價(jià)DemulsificationPerformanceEvaluationofAcidfluidFormulaeTesttemperature:650C:Testperiod:2hour:Acid/cruderatio:40ml/40mlDemulsificationperiod:15min2023/2/4配方酸液的表面張力評(píng)價(jià)MeasurementofSurfaceTensionofAcidfluidFormulaeLowSurfaceTension，easyFlowback2023/2/4配方酸液的配伍性評(píng)價(jià)CompatibilityEvaluationofAcidfluidFormulaeTesttemperature:7C,65CAcidfluid:padfluid,treatmentfluid(I,II,II),postpadfluidAcid/formationwater:10ml/10mlFormationwater:formationwaterdepth1416.50～1391.00minQHD32-6-4wel1Salinityofformationwater:16734mg/LExcellentCompatibility

2023/2/4配方酸液的緩速性能評(píng)價(jià)RetardingPerformanceEvaluationofAcidfluidFormulaeTreatmentFluidII>TreatmentfluidIII>PadFluid>TreatmentFluidI2023/2/4配方酸液的緩蝕性能評(píng)價(jià)CorrosionCotrolPerformanceResultofAcidfluidFormulaeCorrosionspeedofpadfluidis2.1432g/(m2.hr)CorrosionspeedoftreatmentfluidIis2.42g/(m2.hr)CorrosionspeedoftreatmentfluidIIis2.99g//(m2.hr)CorrosionspeedoftreatmentfluidIIIis2.88g/(m2.hr)Corrosionpattern:UniformCNPCStandardRequirement:CorrosionRate<5g/(m2.hr)2023/2/4配方酸液的鐵離子穩(wěn)定劑的性能評(píng)價(jià)FerricIonStabilizerPerformanceEvaluationinAcidFluidFormulaeAcidformulaeallhavepreferableabilitytostabilizeferricionFerricIonStabilizingAbilityofAcid>78%TreatmentFluidI>TreatmentFluidII>TreatmentFluidIII,padFluidPreventgeneratingabundantgelprecipitationofFe(OH)3,andkeepferricionalwaysintheionicstatementsuspendedinacidfluid,2023/2/4配方酸液的防膨性能評(píng)價(jià)AntiswellingPerformanceofAcidFluidFormulaeFluidType2hrExpansionRatio(%)24hrExpansionRatio(%)ReductionofFinalExpansionRatio(%)Freshwater89.597.85Padfluid53.4555.2543.5TreatmentfluidI52.6454.7544.0TreatmentfluidII53.6555.7643.0TreatmentfluidIII53.5856.0342.7Antiswellingperformance:TreatmentfluidI>padfluid>TreatmentfluidII>TreatmentfluidIII2023/2/4配方酸液的酸渣試驗(yàn)AcidsludgeTestofAcidfluidFormulaeAcidsludgequantityinpadfluidis0.0171gIntreatmentfluidIis0.0218gIntreatmentfluidIIis0.0327gIntreatmentfluidIIIis0.0366gLowAcidSludge

2023/2/4對(duì)組合的前置液、處理液(土酸、氟硼酸、復(fù)合酸)和后置液進(jìn)行綜合評(píng)價(jià)表明，酸液配方具有：Theacidfluidformulaearechractersiticof:破乳效果好Demulsificationeffect與地層水配伍性好Goodcompatibility表面張力低Lowsurfacetension降低酸對(duì)設(shè)備腐蝕Lowcorrosionrate絡(luò)合鐵離子能力高Highcapacityofchelateferricion防膨脹性能好Avoidingofclayswelling

其中以處理液1體系效果最佳，具有很好的返排能力，對(duì)儲(chǔ)層傷害小。

TreatmentFluidIsystemisbestformula.小結(jié)ABriefSummary2023/2/4酸流動(dòng)效果評(píng)價(jià)AcidCoreFlowtest酸化流動(dòng)試驗(yàn)方法MethodofAcidCoreFlowingTestKvs.PVofAcid驅(qū)替順序DisplacementOrder4%NH4Cl(MeasureK0)→Padfluid→TreatmentFluid→Post-Pad→Post-PadReversely→4%NH4ClReversely.

2023/2/4堵水酸化效果巖心酸流動(dòng)試驗(yàn)結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest未污染巖芯-處理液IUndamadgedCoreWithTreatmentFluidIUndesiredAcidzingEffect2023/2/4堵水酸化效果巖心酸流動(dòng)試驗(yàn)結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest未污染巖芯-處理液IIUndamadgedCoreWithTreatmentFluidIIUndesiredAcidzingEffect2023/2/4堵水酸化效果巖心酸流動(dòng)試驗(yàn)結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest未污染巖芯-處理液IIIUndamadgedCoreWithTreatmentFluidIIIUndesiredAcidzingEffect2023/2/4堵水酸化效果巖心酸流動(dòng)試驗(yàn)結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest污染巖芯-處理液IDamadgedCoreWithTreatmentFluidIDesiredAcidzingEffect2023/2/4堵水酸化效果巖心酸流動(dòng)試驗(yàn)結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest污染巖芯-處理液IIDamadgedCoreWithTreatmentFluidIIDesiredAcidzingEffect2023/2/4堵水酸化效果巖心酸流動(dòng)試驗(yàn)結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest污染巖芯-處理液IIIDamadgedCoreWithTreatmentFluidIIIDesiredAcidzingEffect2023/2/4堵水酸化酸液體系A(chǔ)cidFormulaeSystem堵水酸化堵劑體系WatershutoffAgentSystem堵水酸化實(shí)施工藝及參數(shù)WaterShutoffandAcidizingJointTechnology儲(chǔ)層及開采特點(diǎn)Reservoir&ProductionBehavoir2023/2/4耐酸性SPA系列堵劑體系研究StudyontheSPA-031Anti-acidPluggingAgentSystem堵水劑材料無機(jī)和有機(jī)兩大類:無機(jī)類堵劑價(jià)格便宜、強(qiáng)度高，但成膠時(shí)間不易控制，一旦誤堵則不易解封有機(jī)類堵劑應(yīng)用更廣泛新型調(diào)堵劑SPA-031屬就地共聚合交聯(lián)體(30-130℃)SPA-032低聚腈胺鹽物質(zhì)(50℃~90℃)2023/2/4耐酸性SPA-031堵劑研究StudyontheSPA-031Anti-acidPluggingAgent化學(xué)作用機(jī)理MechanismofChemistryReaction由第一主劑、第二主劑、引發(fā)劑、速度控制劑和熱穩(wěn)定劑組成。將主劑和添加劑混配成水溶液，注入地層后在地層條件下發(fā)生共聚合反應(yīng)，形成凝膠。SPA-031pluggingagentwascomposedofSPA-031-M1as1stmainagent,SPA-031-K1as2ndmainagent,initiator,controllingrateagentandthermo-stabilityagent.Aqueoussolutionwaspreparedwithmainagentsandadditivesatcertainproportioninsitu.Thentheaqueoussolutionwasinjectedformation.Themainagentsintheaqueoussolutionpolymerized,andshapedcolloidfinally.2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

配方組成Formulations：第一主劑為4～5%第二主劑為0.8～1.2%、引發(fā)劑為0.01～0.12%、熱穩(wěn)定劑5～20mg/l時(shí)，體系成膠時(shí)間在7～45小時(shí)可控(溫度為30～130℃)TheconcentrationofSPA-031-M1:4-5%TheconcentrationofSPA-031-K1:0.8-1.2%Theamountofcross-linkingagentintherawmaterials:0.01-0.12%Theconcentrationofthermo-stabilizer:5-20mg/LReactiontime:7-45hrBathtemperature:30-120℃

2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

主劑1對(duì)成膠時(shí)間影響EffectofSPA-031-K1

C12%3%4%5%t(hr)(gellingtime)／48-5424-3015流動(dòng)性Flowability水一樣稀Likewater倒置略變形Littlechangingshape倒置不動(dòng)Stillness倒置不動(dòng)StillnessNote：C1ConcentrationofSPA-031-K1

；“／”符號(hào)表示5天未成膠第一主劑濃度增加，成膠時(shí)間明顯縮短，凝膠硬度增大ThegeltimeisshortenedwiththeincreasingoftheconcentrationofSPA-031-K1

2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

主劑2對(duì)成膠時(shí)間影響EffectofSPA-031-K1

(90OC)隨著第二主劑濃度的增加,成膠時(shí)間縮小,但進(jìn)一步增加濃度,成膠時(shí)間延長(zhǎng)

GeltimeisshortenedwiththeincreasingoftheconcentrationofSPA-031-K1,however,thegeltimewouldbepostponedwiththemoreincreasingoftheconcentrationofSPA-031-K1

CSPA-031-K100.75%2.5%3.75%4.5%5.75%7.5%成膠時(shí)間t(h)/2015101318/膠體流動(dòng)性MobilityofgelAlikeWaterDistortasbeinginvertedImmobilizeasbeinginvertedImmobilizeasbeinginvertedImmobilizeasbeinginvertedSlightlyDistortasbeinginvertedViscosityincreasingNote：“/”----nogelin24h；Formulation:5%SPA-031-M1+0.01%initiatingagent+10mg/Lheatstabilizer

2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

引發(fā)劑對(duì)成膠時(shí)間影響EffectofPolymerInitiatingAgentConcentration(90oC)引發(fā)劑濃度在0.005%~0.025%時(shí)均可成膠，隨引發(fā)劑濃度增加，成膠時(shí)間明顯縮短，且膠體流動(dòng)性變差A(yù)llsystemcouldformgelwhentheconcentrationofinitiatingagentis0.005%~0.025%.Withtheincreasingconcentrationofinitiatingagent,thetimeofgelobviouslyshortenedConcentrationofinitiatingAgent0.005%0.01%0.015%0.02%0.025%成膠時(shí)間t(hr)41382063流動(dòng)性MobilityofgelAlikewaterDistortasbeinginvertedImmobilizeasbeinginvertedImmobilizeasbeinginvertedImmobilizeasbeinginvertedFormulation：5%SPA-031-M1＋1%SPA-031-K1＋5mg/Lheat-stabilizer2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

阻聚劑對(duì)成膠時(shí)間影響

EffectofPolymerRetardingAgentConcentration隨阻聚劑濃度增加，成膠時(shí)間延長(zhǎng)；當(dāng)阻聚劑濃度為20mg/L時(shí),體系僅增稠；濃度繼續(xù)增加，體系中單體不能被引發(fā)，故體系的外觀仍像水Thetimeofgelextendedwithincreasingtheconcentrationofpolymeringretardingagent.Theconcentrationofpolymeringretardingagentis20mg/L,thesystemthickenonly,andthesinglecouldn’tbeinitiatedwithcontinuallyincreasingtheconcentration，thesystemstillresemblethewater.C3(g/L)2510152030成膠時(shí)間t(hr)3037427070/膠體流動(dòng)性MobilityofgelSlightlyDistortasbeinginvertedSlightlyDistortasbeinginvertedSlightlyDistortasbeinginvertedSlightlyDistortasbeinginvertedFlowasbeinginvertedAlikeWaterNote：“/”----nogel；C3----concentrationofpolymeringretardingagentFormulation:4%SPA-031-M1+0.05%polymerretardingagent

2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

溫度對(duì)成膠時(shí)間影響

EffectofTemperatureonGelTimeThetemperature30~50℃：氧化-還原引發(fā)體系即引發(fā)劑＋亞硫酸氫鈉

Theformulationoftheredoxinitiatingsystemis5＃：3%SPA-031-M1＋1%SPA-031-K1＋0.015%initiatingagent＋0.015%deoxidant

溫度T(℃)304050成膠時(shí)間t(hr)544124膠體流動(dòng)性MobilityofgelDistortasbeinginvertedDistortasbeinginvertedDistortasbeinginvertedUpwards60℃,theformulationis6＃:5%SPA-031-M1＋0.01%initiatingagent＋1%SPA-031-K1＋10mg/Lheatstabilizer溫度

(℃)708090100120130t(hr)81~84502420~1818~1518~15MobilityofgelDistortasbeinginvertedDistortasbeinginvertedDistortasbeinginvertedDistortasbeinginvertedDistortasbeinginvertedDistortasbeinginverted體系配方一定時(shí),隨溫度升高,成膠時(shí)間縮短,即聚合交聯(lián)反應(yīng)速度加快2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

堵劑粘時(shí)關(guān)系Viscosityvs.Time

RelationshipofAgentFormulation：SPA-031-M1is3%,4%or5%,0.01%initiatingagent,1%SPA-031-K1and10mg/Lheat-stabilizer.2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

堵劑熱穩(wěn)定性和鹽穩(wěn)定性TheThermalStabilityandSalt-StabilityofWaterShutoffAgent良好的熱穩(wěn)定性FavorableThermalStability膠體在90℃下于100ml不銹鋼瓶中置放六個(gè)月，粘度由9.1×104mPa.s下降為7.6×104mPa。s，粘度損失率約16.5%，Beingputinthe100mlsteelbottleforsixmonthsat90℃,theviscosityofthegeldropfrom9.1×104mPa.sdownto7.6×104mPa.s,thelosingrateofviscosityisabout16.5%較好的抗鹽性Finesaltresistance用總礦化度為1.36×105mg/l的人工鹽水配置堵劑，在90℃溫室條件下靜放三個(gè)月，粘度由7.3×104mPa.s變?yōu)?.2×104mPa.s，粘度損失為28.8%。

Watershutoffagentiscompoundedwiththeman-madebrineofgeneralmineraldegreeas1.36×105mg/l,beingsetforthreemonthsat90℃,theviscosityofthewatershutoffagentdropfrom7.3×104mPa.sdownto5.2×104mPa.s，thelosingrateofviscosityisabout28.8%.

2023/2/4影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

堵劑體系強(qiáng)度StrengthOfSPA-0312023/2/4選擇性堵水作用

SelectivityWaterShutoffAgent將SPA-031膠體分別置于油田人工地層水和混合油(原油∶煤油為1∶1)中，5天后水中膠體體積脹大1~3倍油中膠體體積縮小約1/4TheSPA-031gelisputinman-madestratumwaterandmixoilseparately(crudeoil∶coaloil=1∶1),thegelinwaterinflateto1~3times，thegelinoildeflateto1/4in5days影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

2023/2/4SPA-031體系的巖心模擬試驗(yàn)

TheSimulationCoreExperimentofSPA-031System

2023/2/4堵劑封堵效率，耐沖刷性和耐酸性

BlockEfficiency,anti-scourandanti-acidabilityofWatershutoffagentCoreD×L(cm)PV(ml)Breakthroughpressure(MPa)Strength(MPa/m)TreatingSolutionWaterphasepermeabilitybeforetreatmentμm2Waterphasepermeabilitybeforetreatmentμm2Bridgingefficiency%BridgingDecreaseEfficiency(50pv)12.5×8.54.773.01235.4SPA-03Blocker0.08110.001997.695.6%22.5×7.15.503.41248.7Soakgacidafterblockergels0.04210.004689.132.5×8.14.296.14077SPA-03Blocker0.02050.032599.993.1%42.5×8.45.687.55089.9Soakacidafterblockergels0.02630.002889.6TestofAcidSensitivityandEffectofWaterBlock堵劑自身強(qiáng)度高，耐沖刷性和封堵性好,良好酸敏性SPA-031體系的巖心模擬試驗(yàn)

TheSimulationCoreExperimentofSPA-031System

2023/2/4堵劑選擇進(jìn)入性

SelectiveEntryTestofWaterShutoffWaterpotentiometricPermeabilitym2PermeabilityDifference

Entryflowrate(m3/h)

Core’sporevolume(ml)

Injectedporevolume(ml)

Volumeratio

87.41:5.51010.5612415.88.131031:7.51012.210.012.513.68.870.87151:151014.3715754710.20.2不同級(jí)差雙并聯(lián)巖心中流量體積比VolumeRatioinDoubleParallelCoreswithVariousPermeabilityDifferences滲透率級(jí)差增大，高低滲透層體積比顯箸提高，有利于堵液籠統(tǒng)注入、使優(yōu)先進(jìn)入高滲透層volumetricratioinhighandlowpermeabilityformationincreasesremarkablyaspermeabilitydifferencebecomeslarge.Itdoesgoodtoinjecttogetherblockersolventandmakeitenterhighpermeabilityformation(usuallywaterproducingformation)atpriory2023/2/4堵劑選擇進(jìn)入性

SelectiveEntryTestofWaterShutoff不同排量時(shí)雙聯(lián)巖心中流量體積比FlowRateVolumeRatioinDoubleParallelCoresatDifferentFlowRate當(dāng)滲透率級(jí)差一定時(shí)，隨排驅(qū)速度的增加，高低滲透層流量分配比下降；排量較低時(shí)，進(jìn)入高低滲透層的流量體積比差異減小采用低排量注入方式堵液將主要進(jìn)入高滲區(qū)

Atagivenpermeabilitydifference,asdrivevelocityraises,distributionratiobetweenhighandlowpermeabilityformationdecreases.Soduringconstructionwhengellingtimematchtheneedoftechnology,blockerfluidwhoseflowrateislowerwillmainlyenterhighpermeabilityformation.WaterpotentiometricPermeability10-3μm2PermeabilityDifferenceCore’sporevolume(ml)Flowrate5m3/hInjectedporevolume(ml)Flowrate7m3/hInjectedporevolume(ml)Flowrate10m3/hInjectedporevolume(ml)Flowrate13m3/hInjectedporevolume(ml)117.41:5.311.761212121221.88.41.82.644.6Flowratedistributionratio6.674.632.62023/2/4前置液保護(hù)試驗(yàn)

ApplicationofPadfluid(PreventWaterplugagentFromDiluting)

TestofProtectingPadfluidCoreNo.Core’spermeability(10-3μm2)Volumeofpadfluid(PV)Volumeofblockerfluid(PV)Gel’sstrength(MPa/m)Pr-113300.3/Pr-29600.57.1Pr-31450.30.36.5Pr-41130.30.518對(duì)堵液采取弱凝膠前置液保護(hù)措施是行之的效的

Itisworkabletoprotectblockersolventbyweakgelaspadfluid2023/2/4SPA-031堵劑小結(jié)

ABriefSummaryonShutoffagentSPA-0311)SPA-031具有較強(qiáng)的抗酸性SPA-031canresistacidatsomedegree.2)該堵劑具有良好的選擇注入性、高強(qiáng)度性和高效封堵性SPA-031hasthegoodabilityofselectivewaterflowing,strengthandshutoff.3)前置液對(duì)SPA-031體系具有保護(hù)作用SPA-031canbeprotectedbypadfluid.4)堵酸聯(lián)合作業(yè)是油田控水穩(wěn)油中的一項(xiàng)新的措施，且行之有效Jointoperationofpluggingagentandacidizingisthenewmeasurementinoilfield.2023/2/4耐酸性SPA-032堵劑研究StudyontheSPA-032Anti-acidPluggingAgent油田常用堵劑主劑為聚丙烯酰胺(HPAM)，但溶解性實(shí)驗(yàn)表明，在海水和館陶水中無論是低分子量聚合物還是高分子量聚合物的溶解性都達(dá)不到施工要求，而低聚物腈胺鹽易溶于水MainagentofpluggingagentusedinoilfieldisusuallyHPAM.TheresultsindicatethatthedissolutionofpolymerwithneitherhighnorlowmolecularweightcanreachtheconstructionneedsinseawaterandGuantaowater.WhileSPA－032-Z2withlowpolymerizingdegreecandissolveinwateranditsgelstrengthishigherthanfreshwatergel.weselectSPA－032-Z2withlowpolymerizingdegreeasmainagent.低聚物腈胺鹽作為耐酸堵劑的主劑2023/2/4影響SPA-032主劑的選擇SelectionofSPA-032MainAgent低聚物腈胺鹽(AY-Ⅱ)使用濃度的確定，AY-Ⅱ濃度太低，不能成膠，濃度太高，將增加作業(yè)成本，確定交聯(lián)劑濃度為5000mg/L，改變AY-Ⅱ的濃度TheEffectofLow-PolymerizationAY-Ⅱ(%)78910成膠時(shí)間Geltime(h)18181615強(qiáng)度描述IntensityABCDA.Flowinggel:inversebottle,gelhaveobviousflowability.B.Hardlyflowinggel:inversebottle,gelhardlyflowingand/orinverseagreatpartofgeldon’tflow.C.Notflowinggelwithhighdeform:inversebottleandgelcan’tflow(gelonlyflowinsmallareaofbottle).D.Notflowinggelwithgentlydeform:inverseonlythesurfaceofgelcandeformgently.AY-Ⅱ濃度在8%~10%的范圍內(nèi)能滿足強(qiáng)度的要求Thecon.ofAY-Ⅱbetween8%to10%cansatisfytherequestofintensity2023/2/4交聯(lián)劑選擇和濃度確定TheSelectionofCrosslinkingAgentAndDeterminingofConcentration交聯(lián)劑濃度對(duì)成膠時(shí)間影響不大，但影響凝膠的最終強(qiáng)度。建議交聯(lián)劑的用量范圍為4000mg/L~6000mg/LTheconcentrationofcrosslinkingagentnothavehigheffectongeltime,butfinallyeffectgelintensity.Recommendedconcentrationbetween4000mg/Lto6000mg/L.

有機(jī)鉻交聯(lián)體系和有機(jī)復(fù)合交聯(lián)體系SPA-032-J2AdoptorganicchromiumcrosslinkingsystemandorganiccompoundcrosslinkingsystemSPA-032-J2CrosslinkingagentSPA－032-J2Con,mg/L成膠時(shí)間Geltime,hr強(qiáng)度描述Intensity2000---Notgel300022A400019B500018C600016DTheEffectofCrosslinkingAgentOnGelQuality,60℃,GuantaoWater2023/2/4SPA-032堵劑耐酸性TheAnti-AcidQualityofSPA-032WaterShutoffAgent酸液能使凝膠脫水收縮(因?yàn)橐后w的總量增加了)，凝膠的強(qiáng)度得到了進(jìn)一步增強(qiáng)，在實(shí)驗(yàn)的10天時(shí)間內(nèi)，凝膠未見被破壞。表明凝膠具有耐酸性

Acidcandehydrategel,(Becauseliquidgrossincreased)，Theintensityofgelreceivedmorebuildup,withinthetendaysoftest,gelnotbefoundtodestroy,whichshowgelhaveanti-acidquality

堵劑的耐酸性實(shí)驗(yàn)現(xiàn)象TestPhenomenaofAnti-AcidWaterShutoffAgent酸浸時(shí)間Dunktime(hr)試驗(yàn)現(xiàn)象Testph