2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、中國石油大學(xué)(華東)碩士學(xué)位論文可復(fù)位式預(yù)應(yīng)力固井地錨的設(shè)計與應(yīng)用姓名:張桂林申請學(xué)位級別:碩士專業(yè):油氣井工程指導(dǎo)教師:管志川20071001TheDesignandApplicationofRepositionablePrestressedEarthAnchorofCementingZhangGuilinrOiI&G硒WellEngineering)DirectedbyProfeSSOTGuanZllichuanAbstractTh

2、ispap目focusesontherepositionablepre—stressedearthanchoranditsapplicationinwellcementingTherepositionablepre—stressedearthanchorisakindofcasingtoolusedforprestressedcementingofthermalrecoverywell,whichCallsarisfytheneedof

3、heavyoilthermalrecoveryandmakeupthedeficienciesoftheformerprestressedcementingtechniqueCyclicsteaminjectiontechniqueiscommonlyusedintherecoveryofheavyoilreservoirAsaresultofhightemperature,thecasinginthewellwillexpandand

4、elongate,thereforeleadingtotremendouscompressivestress,whichCallcausethedistortion,breakingofthecasingascendingofthewellheadorevenwellabandonmentPrestressedcementingisakindoftechniquewhichastressisappliedonthecasingstrin

5、ginthewellbeforesolidificationofthecementslurry心eneratingprestressinthecasing)ThistechniquecandecreaseorcounteracttheelongationofthehotcasingandavoiddamagetothewellToapplypre—stress,thebottomofthecasingmustbeanchoredfirm

6、lyEarthanchorisakindoftoolusedtosecurethebottomofthecasingAspracticeproved,pre—stressedcementingtechniquecansatisfytherequirementsofsteaminjectionthermalrecoveryofheavyoilByusingthepressuredifferentialcausedbytheflowinga

7、ctionofdrillingfluidanditsliftingeffecttothecasingstring,theanchorcangoeffectandsolvetheproblemofthe‘‘capacityofgoingupwardanddownw”d”ofthecasingfortheprestressedcementingensuringtheSUCCESSrateoftheopermionWhentheearthan

8、chorismnintothewell,theanchorgrippersareinashrinkingpositionintheanchorbodyWhenthecasingisruntotheplanneddepth,theanchorjawopens,andthetipoftheanchorgrippersaresupportedbythewalloftheboreholeAtthistimethecasingisliftedup

9、wardandthenthegrippersCaBenterintotheboreholewall,realizinganchoringIfcementingisunsuccessfulwiththeearthanchorcasingcanbepickeduptochangetheanchorbystoppingthepumpandretractingtheanchorgrippersComparedwithotherprestress

10、edcementingtoolsandtechniques,theanchortoolanditscementingtechnologyareinnovativeandhave7remarkablefeaturesThrotIghlaboratorytests,fieldtestsandapplications,prestressedcementingrequirementshavebeenmet,providingtheoretica

11、landpracticalbasisforfurtherstudyoncementingwithdownholeanchortoolsTillpresent,about100setsofanchortoolshavebeenusedinShangliHenanandotheroilfields,creatingremarkabletechnicaleconomicandsocialbenefits“KFYDM—1100BEarthanc

12、horforPrestressedCementing”wasgiventhethird—classawardfurscientificandtechnologicalprogressbyShengliOilfleldThepatentrightforutilitymodelwasgrantedto“ABoreholeWallGrippingDevicefurPre—stressedCementing’’inthenameoftheabo

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