可復(fù)位式預(yù)應(yīng)力固井地錨的設(shè)計與應(yīng)用

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