QHD326堵水酸化聯(lián)作技術(shù)

概述Introduction儲層特點及傷害因素、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性能評價、酸液配方體系優(yōu)選、性能評價Acidizingadditivesperfomanceevaluation,Acidformulaedesignanditsperformanceevaluation酸流動效果評價Acidflowtest堵劑體系合成、性能評價和流動效果評價Developmentofwatershutoffagent，perfomanceevaluationandcoreflowtest堵水酸化注入強度和速度研究DeterminingofInjectionRateandIntensity施工參數(shù)選擇DeterminingofJobparameters實施工藝及方案OperationTechnologyandjobProgramme結(jié)論Conclusions匯報提綱Outline2023/4/21現(xiàn)在是1頁\一共有96頁\編輯于星期一概述－立項背景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)幕復雜，受管柱等條件限制，機械卡水局限性強Complicatedreservoir，mechanicalwatershutoffmeasuresarelimitedforpracticing堵水酸化措施Waterpluggingandacidizing增油控水LowerwatercutEnhanceoilproductionrate2023/4/21現(xiàn)在是2頁\一共有96頁\編輯于星期一概述－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

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

儲層及開采特點reservoir

2023/4/21現(xiàn)在是3頁\一共有96頁\編輯于星期一儲層分析及傷害機理堵水酸化堵劑體系研究堵劑巖心流動試驗研究堵水酸化酸型、添加劑配方體系研究巖心酸流動試驗研究注入強度和速度研究堵水酸化實施工藝研究堵液候凝條件和關(guān)井條件研究實施方案研究概述－主要工作Mainworkofthestudy2023/4/21現(xiàn)在是4頁\一共有96頁\編輯于星期一概述－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)時間確定CrosslinkingTimeofwaterShutoffagentsystem堵劑體系的強度和耐沖刷性Strengthandanti-washwaypropetyofwaterShutoffagentsystemand堵劑體系的選擇性進入油藏Goodselectivityforinjectionunderreservoirconditions堵液前置液保護技術(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OperatingTechnologyandMethod2023/4/21現(xiàn)在是5頁\一共有96頁\編輯于星期一概述－研究思路ResearchApproach2023/4/21現(xiàn)在是6頁\一共有96頁\編輯于星期一儲層特點、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

Heavycrudeoil2023/4/21現(xiàn)在是7頁\一共有96頁\編輯于星期一儲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.2023/4/21現(xiàn)在是8頁\一共有96頁\編輯于星期一一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移

VelocitySensitivity一定鹽敏性粘土礦物縮聚、分散、脫落，運移堵塞孔喉

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較強的出砂趨勢

SandingTendency儲層傷害潛在因素分析

AnAnalysisofPotentialFactorsforFormationDamage2023/4/21現(xiàn)在是9頁\一共有96頁\編輯于星期一儲層傷害機理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)2023/4/21現(xiàn)在是10頁\一共有96頁\編輯于星期一開采特點

ProductionBehaviour欠產(chǎn)原因

ReasonsofLowProduction含水上升快HighWaterCut邊水推進(EdgeWater)底水錐進(BottomWater)水竄(WaterBreakthrough)儲層傷害FormationDamage過高的比采油指數(shù)Over-designedProductionIndex2023/4/21現(xiàn)在是11頁\一共有96頁\編輯于星期一出水類型－邊水推進

TypeofWaterOut－EdgeWaterEdgeWaterEdgeWaterEdgeWaterEdgeWater2023/4/21現(xiàn)在是12頁\一共有96頁\編輯于星期一出水類型－邊水推進

TypeofWaterOut－EdgeWaterB7BW1B8EdgeWaterEdgeWater2023/4/21現(xiàn)在是13頁\一共有96頁\編輯于星期一出水類型－邊水推進

TypeofWaterOut－EdgeWater2023/4/21現(xiàn)在是14頁\一共有96頁\編輯于星期一出水類型－底水錐進

TypeofWaterOut－ConingofBottomWater2023/4/21現(xiàn)在是15頁\一共有96頁\編輯于星期一出水類型－底水錐進

TypeofWaterOut－ConingofBottomWater2023/4/21現(xiàn)在是16頁\一共有96頁\編輯于星期一出水類型－底水錐進

TypeofWaterOut－ConingofBottomWater2023/4/21現(xiàn)在是17頁\一共有96頁\編輯于星期一出水類型－水竄？

TypeofWaterOut－waterBreakthrough2023/4/21現(xiàn)在是18頁\一共有96頁\編輯于星期一已采取的增產(chǎn)措施

StimulationshavePracticed機械卡水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&AcidizingJointOperation2023/4/21現(xiàn)在是19頁\一共有96頁\編輯于星期一(1)QHD32-6油田地質(zhì)條件復雜，多斷層、河流相沉積、巖石疏松、多油水系統(tǒng)、重(稠）油。整個構(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。

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

BriefSummary2023/4/21現(xiàn)在是20頁\一共有96頁\編輯于星期一(3)儲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

BriefSummary2023/4/21現(xiàn)在是21頁\一共有96頁\編輯于星期一小結(jié)A

BriefSummary(5)QHD32-6油田出水類型：邊水推進EdgeWater底水錐進ConingofBottomWater邊水、底水復合CompositionofEdgeWater，Bottom套管外竄？OutsideCasingBreakthrough？2023/4/21現(xiàn)在是22頁\一共有96頁\編輯于星期一堵水酸化過程中應(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、防微粒運移、防止鐵離子沉淀、防止改變巖石的潤濕性Clayswelling,theparticulateimmigrating,theironionprecipitationandthechangeofthewettability采用較低濃度的鹽酸預處理，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合理選擇注酸強度、排液方式和反排壓力，防止出砂Properacidconcentration,flowbackmethodandflowbackhpressure,sandcontrollmusttakenintoaccount2023/4/21現(xiàn)在是23頁\一共有96頁\編輯于星期一堵水酸化酸液體系A(chǔ)cidFormulaeSystem堵水酸化堵劑體系WatershutoffAgentSystem堵水酸化實施工藝及參數(shù)WaterShutoffandAcidizingJointTechnology儲層及開采特點Reservoir&ProductionBehavoir2023/4/21現(xiàn)在是24頁\一共有96頁\編輯于星期一堵水酸化酸型及濃度確定

DeterminingofAcidtypeandConcentration酸化酸型分析砂巖儲層酸化一般采用HCl和HF進行。適于QHD32－6油田酸化酸液體系分析土酸體系:溶蝕能力強，反應(yīng)速度快，對地層巖石結(jié)構(gòu)破壞嚴重SHF(SequentialHFProcess)酸液體系：粘土傷害儲層可采用，但施工復雜高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、粘土含量較高，巖石疏松和易于造成微粒移動的地層廣泛使用的深部酸化酸液體系。2023/4/21現(xiàn)在是25頁\一共有96頁\編輯于星期一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.鹽酸對儲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%時增加幅度要大些。鹽酸對巖粉的溶蝕率低，巖芯疏松，建議酸濃度采用5-8%的鹽酸較為合理。2023/4/21現(xiàn)在是26頁\一共有96頁\編輯于星期一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

2023/4/21現(xiàn)在是27頁\一共有96頁\編輯于星期一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

2023/4/21現(xiàn)在是28頁\一共有96頁\編輯于星期一堵水酸化酸型及濃度確定

DeterminingofAcidtypeandConcentration(1)土酸體系對巖石結(jié)構(gòu)破壞作用較強，氟硼酸體系則能較好的保持儲層巖石的機械強度，是適于水敏性較強、巖石疏松和易于造成微粒運移的儲層使用的深部酸化酸液體系。對于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QHD32-6油田儲層巖石溶蝕率順序為：HCl+HF>HBF4+HCl>HCl。酸化時推薦酸液濃度為：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?？紤]到堵水后堵液對后續(xù)酸液前緣的稀釋，實際應(yīng)用時酸液濃度可適當提高

2023/4/21現(xiàn)在是29頁\一共有96頁\編輯于星期一堵水酸化添加劑單項性能評價、酸液配方體系優(yōu)選、性能評價

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。應(yīng)對酸液中的各種添加劑進行單項性能篩選，綜合分析，優(yōu)選出性能好的添加劑。

酸液添加劑單項評價主要進行：緩蝕劑表面張力測定鐵離子穩(wěn)定劑測定破乳試驗防膨性能試驗和配伍性試驗。采用鹽酸、土酸、氟硼酸和混合酸進行評價：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的濃度復合酸采用濃度為5%HCl+4%HBF4+0.5%HF。2023/4/21現(xiàn)在是30頁\一共有96頁\編輯于星期一堵水酸化添加劑單項性能評價、酸液配方體系優(yōu)選、性能評價

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SD2-11Demulsifier2023/4/21現(xiàn)在是31頁\一共有96頁\編輯于星期一配方酸液的篩選

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

綜合儲層巖性分析、巖石結(jié)構(gòu)情況、對儲層巖石溶蝕試驗結(jié)果和酸液添加劑單項評價結(jié)果及分析，采用SA系列的添加劑與鹽酸、土酸、氟硼酸和復合酸互配，組合成以下配方：2023/4/21現(xiàn)在是32頁\一共有96頁\編輯于星期一配方酸液特點

CharacteristicofAcidFormulae對儲層的弱溶蝕和堵塞物的有效溶蝕，保護巖石結(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，加強酸液配方與地層流體和有機物的互溶性，提高酸液對反應(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了化學助排劑性能，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；加強溶解地層孔隙表面的油組分；使地層為水潤濕以提高油的相對滲透率；在配方酸液中增加了膠束劑，加強酸液配方與地層流體和有機物的互溶性，提高酸液對反應(yīng)產(chǎn)物的懸浮能力。2023/4/21現(xiàn)在是33頁\一共有96頁\編輯于星期一配方酸液的破乳性能評價DemulsificationPerformanceEvaluationofAcidfluidFormulaeTesttemperature:650C:Testperiod:2hour:Acid/cruderatio:40ml/40mlDemulsificationperiod:15min2023/4/21現(xiàn)在是34頁\一共有96頁\編輯于星期一配方酸液的表面張力評價MeasurementofSurfaceTensionofAcidfluidFormulaeLowSurfaceTension，easyFlowback2023/4/21現(xiàn)在是35頁\一共有96頁\編輯于星期一配方酸液的配伍性評價CompatibilityEvaluationofAcidfluidFormulaeTesttemperature:7C,65CAcidfluid:padfluid,treatmentfluid(I,II,II),postpadfluidAcid/formationwater:10ml/10mlFormationwater:formationwaterdepth1416.50～1391.00minQHD32-6-4wel1Salinityofformationwater:16734mg/LExcellentCompatibility

2023/4/21現(xiàn)在是36頁\一共有96頁\編輯于星期一配方酸液的緩速性能評價RetardingPerformanceEvaluationofAcidfluidFormulaeTreatmentFluidII>TreatmentfluidIII>PadFluid>TreatmentFluidI2023/4/21現(xiàn)在是37頁\一共有96頁\編輯于星期一配方酸液的緩蝕性能評價CorrosionCotrolPerformanceResultofAcidfluidFormulaeCorrosionspeedofpadfluidis2.1432g/(m2.hr)CorrosionspeedoftreatmentfluidIis2.42g/(m2.hr)CorrosionspeedoftreatmentfluidIIis2.99g//(m2.hr)CorrosionspeedoftreatmentfluidIIIis2.88g/(m2.hr)Corrosionpattern:UniformCNPCStandardRequirement:CorrosionRate<5g/(m2.hr)2023/4/21現(xiàn)在是38頁\一共有96頁\編輯于星期一配方酸液的鐵離子穩(wěn)定劑的性能評價FerricIonStabilizerPerformanceEvaluationinAcidFluidFormulaeAcidformulaeallhavepreferableabilitytostabilizeferricionFerricIonStabilizingAbilityofAcid>78%TreatmentFluidI>TreatmentFluidII>TreatmentFluidIII,padFluidPreventgeneratingabundantgelprecipitationofFe(OH)3,andkeepferricionalwaysintheionicstatementsuspendedinacidfluid,2023/4/21現(xiàn)在是39頁\一共有96頁\編輯于星期一配方酸液的防膨性能評價AntiswellingPerformanceofAcidFluidFormulaeFluidType2hrExpansionRatio(%)24hrExpansionRatio(%)ReductionofFinalExpansionRatio(%)Freshwater89.597.85Padfluid53.4555.2543.5TreatmentfluidI52.6454.7544.0TreatmentfluidII53.6555.7643.0TreatmentfluidIII53.5856.0342.7Antiswellingperformance:TreatmentfluidI>padfluid>TreatmentfluidII>TreatmentfluidIII2023/4/21現(xiàn)在是40頁\一共有96頁\編輯于星期一配方酸液的酸渣試驗AcidsludgeTestofAcidfluidFormulaeAcidsludgequantityinpadfluidis0.0171gIntreatmentfluidIis0.0218gIntreatmentfluidIIis0.0327gIntreatmentfluidIIIis0.0366gLowAcidSludge

2023/4/21現(xiàn)在是41頁\一共有96頁\編輯于星期一對組合的前置液、處理液(土酸、氟硼酸、復合酸)和后置液進行綜合評價表明，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，對儲層傷害小。

TreatmentFluidIsystemisbestformula.小結(jié)ABriefSummary2023/4/21現(xiàn)在是42頁\一共有96頁\編輯于星期一酸流動效果評價AcidCoreFlowtest酸化流動試驗方法MethodofAcidCoreFlowingTestKvs.PVofAcid驅(qū)替順序DisplacementOrder4%NH4Cl(MeasureK0)→Padfluid→TreatmentFluid→Post-Pad→Post-PadReversely→4%NH4ClReversely.

2023/4/21現(xiàn)在是43頁\一共有96頁\編輯于星期一堵水酸化效果巖心酸流動試驗結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest未污染巖芯-處理液IUndamadgedCoreWithTreatmentFluidIUndesiredAcidzingEffect2023/4/21現(xiàn)在是44頁\一共有96頁\編輯于星期一堵水酸化效果巖心酸流動試驗結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest未污染巖芯-處理液IIUndamadgedCoreWithTreatmentFluidIIUndesiredAcidzingEffect2023/4/21現(xiàn)在是45頁\一共有96頁\編輯于星期一堵水酸化效果巖心酸流動試驗結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest未污染巖芯-處理液IIIUndamadgedCoreWithTreatmentFluidIIIUndesiredAcidzingEffect2023/4/21現(xiàn)在是46頁\一共有96頁\編輯于星期一堵水酸化效果巖心酸流動試驗結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest污染巖芯-處理液IDamadgedCoreWithTreatmentFluidIDesiredAcidzingEffect2023/4/21現(xiàn)在是47頁\一共有96頁\編輯于星期一堵水酸化效果巖心酸流動試驗結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest污染巖芯-處理液IIDamadgedCoreWithTreatmentFluidIIDesiredAcidzingEffect2023/4/21現(xiàn)在是48頁\一共有96頁\編輯于星期一堵水酸化效果巖心酸流動試驗結(jié)果StudyResultsofWaterShutoff&AcidizingEffectTest污染巖芯-處理液IIIDamadgedCoreWithTreatmentFluidIIIDesiredAcidzingEffect2023/4/21現(xiàn)在是49頁\一共有96頁\編輯于星期一堵水酸化酸液體系A(chǔ)cidFormulaeSystem堵水酸化堵劑體系WatershutoffAgentSystem堵水酸化實施工藝及參數(shù)WaterShutoffandAcidizingJointTechnology儲層及開采特點Reservoir&ProductionBehavoir2023/4/21現(xiàn)在是50頁\一共有96頁\編輯于星期一耐酸性SPA系列堵劑體系研究StudyontheSPA-031Anti-acidPluggingAgentSystem堵水劑材料無機和有機兩大類:無機類堵劑價格便宜、強度高，但成膠時間不易控制，一旦誤堵則不易解封有機類堵劑應(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℃)2023/4/21現(xiàn)在是51頁\一共有96頁\編輯于星期一耐酸性SPA-031堵劑研究StudyontheSPA-031Anti-acidPluggingAgent化學作用機理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.2023/4/21現(xiàn)在是52頁\一共有96頁\編輯于星期一影響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，體系成膠時間在7～45小時可控(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℃

2023/4/21現(xiàn)在是53頁\一共有96頁\編輯于星期一影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

主劑1對成膠時間影響EffectofSPA-031-K1

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

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

2023/4/21現(xiàn)在是54頁\一共有96頁\編輯于星期一影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

主劑2對成膠時間影響EffectofSPA-031-K1

(90OC)隨著第二主劑濃度的增加,成膠時間縮小,但進一步增加濃度,成膠時間延長

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

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

2023/4/21現(xiàn)在是55頁\一共有96頁\編輯于星期一影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

引發(fā)劑對成膠時間影響EffectofPolymerInitiatingAgentConcentration(90oC)引發(fā)劑濃度在0.005%~0.025%時均可成膠，隨引發(fā)劑濃度增加，成膠時間明顯縮短，且膠體流動性變差Allsystemcouldformgelwhentheconcentrationofinitiatingagentis0.005%~0.025%.Withtheincreasingconcentrationofinitiatingagent,thetimeofgelobviouslyshortenedConcentrationofinitiatingAgent0.005%0.01%0.015%0.02%0.025%成膠時間t(hr)41382063流動性MobilityofgelAlikewaterDistortasbeinginvertedImmobilizeasbeinginvertedImmobilizeasbeinginvertedImmobilizeasbeinginvertedFormulation：5%SPA-031-M1＋1%SPA-031-K1＋5mg/Lheat-stabilizer2023/4/21現(xiàn)在是56頁\一共有96頁\編輯于星期一影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

阻聚劑對成膠時間影響

EffectofPolymerRetardingAgentConcentration隨阻聚劑濃度增加，成膠時間延長；當阻聚劑濃度為20mg/L時,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成膠時間t(hr)3037427070/膠體流動性MobilityofgelSlightlyDistortasbeinginvertedSlightlyDistortasbeinginvertedSlightlyDistortasbeinginvertedSlightlyDistortasbeinginvertedFlowasbeinginvertedAlikeWaterNote：“/”----nogel；C3----concentrationofpolymeringretardingagentFormulation:4%SPA-031-M1+0.05%polymerretardingagent

2023/4/21現(xiàn)在是57頁\一共有96頁\編輯于星期一影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

溫度對成膠時間影響

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成膠時間t(hr)544124膠體流動性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,隨溫度升高,成膠時間縮短,即聚合交聯(lián)反應(yīng)速度加快2023/4/21現(xiàn)在是58頁\一共有96頁\編輯于星期一影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

堵劑粘時關(guān)系Viscosityvs.Time

RelationshipofAgentFormulation：SPA-031-M1is3%,4%or5%,0.01%initiatingagent,1%SPA-031-K1and10mg/Lheat-stabilizer.2023/4/21現(xiàn)在是59頁\一共有96頁\編輯于星期一影響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%.

2023/4/21現(xiàn)在是60頁\一共有96頁\編輯于星期一影響SPA-031成膠性能的因素FactorsofEffectonSPA-031’sPerformance

堵劑體系強度StrengthOfSPA-0312023/4/21現(xiàn)在是61頁\一共有96頁\編輯于星期一選擇性堵水作用

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

2023/4/21現(xiàn)在是62頁\一共有96頁\編輯于星期一SPA-031體系的巖心模擬試驗

TheSimulationCoreExperimentofSPA-031System

2023/4/21現(xiàn)在是63頁\一共有96頁\編輯于星期一堵劑封堵效率，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

TheSimulationCoreExperimentofSPA-031System

2023/4/21現(xiàn)在是64頁\一共有96頁\編輯于星期一堵劑選擇進入性

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不同級差雙并聯(lián)巖心中流量體積比VolumeRatioinDoubleParallelCoreswithVariousPermeabilityDifferences滲透率級差增大，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)先進入高滲透層volumetricratioinhighandlowpermeabilityformationincreasesremarkablyaspermeabilitydifferencebecomeslarge.Itdoesgoodtoinjecttogetherblockersolventandmakeitenterhighpermeabilityformation(usuallywaterproducingformation)atpriory2023/4/21現(xiàn)在是65頁\一共有96頁\編輯于星期一堵劑選擇進入性

SelectiveEntryTestofWaterShutoff不同排量時雙聯(lián)巖心中流量體積比FlowRateVolumeRatioinDoubleParallelCoresatDifferentFlowRate當滲透率級差一定時，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，進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)117.41:5.311.761212121221.88.41.82.644.6Flowratedistributionratio6.674.632.62023/4/21現(xiàn)在是66頁\一共有96頁\編輯于星期一前置液保護試驗

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對堵液采取弱凝膠前置液保護措施是行之的效的

Itisworkabletoprotectblockersolventbyweakgelaspadfluid2023/4/21現(xiàn)在是67頁\一共有96頁\編輯于星期一SPA-031堵劑小結(jié)

ABriefSummaryonShutoffagentSPA-0311)SPA-031具有較強的抗酸性SPA-031canresistacidatsomedegree.2)該堵劑具有良好的選擇注入性、高強度性和高效封堵性SPA-031hasthegoodabilityofselectivewaterflowing,strengthandshutoff.3)前置液對SPA-031體系具有保護作用SPA-031canbeprotectedbypadfluid.4)堵酸聯(lián)合作業(yè)是油田控水穩(wěn)油中的一項新的措施，且行之有效Jointoperationofpluggingagentandacidizingisthenewmeasurementinoilfield.2023/4/21現(xiàn)在是68頁\一共有96頁\編輯于星期一耐酸性SPA-032堵劑研究StudyontheSPA-032Anti-acidPluggingAgent油田常用堵劑主劑為聚丙烯酰胺(HPAM)，但溶解性實驗表明，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2023/4/21現(xiàn)在是69頁\一共有96頁\編輯于星期一影響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成膠時間Geltime(h)18181615強度描述IntensityABCDA.Flowinggel:inversebottle,gelhaveobviousflowability.B.Hardlyflowinggel:inversebottle,gelhardlyflowingand/orinverseagreatpartofgeldon’tflow.C.Notflowinggelwithhighdeform:inversebottleandgelcan’tflow(gelonlyflowinsmall