可復位式預應力固井地錨的設計與應用

1、中國石油大學（華東）碩士學位論文可復位式預應力固井地錨的設計與應用姓名：張桂林申請學位級別：碩士專業(yè)：油氣井工程指導教師：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