油井出砂机理分析与在东辛油田的应用

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1、～fI'，●StudyontheMechanismofSandProductionanditsApplicationinDongxinOilRegionYangJing(Oil&GasEngineering)DirectedbyProf．DongChangyinAbstractDongxinoilregionincludesDongxin，Yongan，Guanglioilfieldandsoonwiththefieldpropertiesofcomplexgeologicalstructures，Theres

2、ervoirtypeismoreandThecomplexgeologicalstructure，Itiscomposedoffinesandandsiltandfinesand．100secementationin；partreservoirs，weakstrengthofcementingmaterialandpoorcompaction,whichleadstopervasivesandproduction．Forinstance，Sha-2segmentinYonganoilfieldshowsloos

3、ecementationsignificantly．muchlateralfloodingandhorizontalwells，whichmakesitdifficulttopreventsandproduction．Asaresult，someprecautionsshouldbetakentocontrolsandbeforenewwellsgointofullproduction．Nowadays，sandproductionhasbecomeoneofthesignificantdifficulties

4、foroilwellstoworknormally,theharmofwhichrangesfrompumpfailure，oilwellsstoppage，workloadincreaseforproductionandsandcleaningtodismissedorceaseproduction．Eventhestratumcollapseandwellcasingdamagewillbeproducedbysand—buriedoilreservoirsandpipelines．Alltheseriou

5、sconsequenceswouldinterferewitllnotmerelyoilwellsproductivitybutoilfiledproduction．Furthermore，thefinaloilrecoveryratewouldalsobeaffectedbyunbalancedinjection-productionunderground．Thispaperanalyzedthemainlaws，causationandmechanismofsandproduction．Thentofore

6、castthesandproductionqualitativelybyusingintervaltransittime，porosity,indexofsandproduction，combinedmodulusandSchlumbergerratio，whichcanhelptoensurethethresholdvalueofeachparameter．Basingonthestudyofmodemdataminingtechnology,dynamicpredictionmodelofsandprodu

7、ctioninDongxinoilfieldcouldbeestablishedfrommultivariatestandpoint．Besides，thepredictionandanalysissystemcouldalsobedevelopedbythesameway．Finally,correspondingimprovementswereproposed、)l，itlltheresearchonsandingrule，mechanism，predictionresearchandchiefproble

8、msofsandcontrolinDongxinoilregionatpresent．TheresearchonmechanismandpredictionofsandproductioninDongxinoilfieldcould■r，k■■r●beappliedtoachievetheearlypredictionofsandproductionbehaviorthentheeff