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5、~-~=~~#;*W#;#~;M#~x~~=~ffl~1LSubject:ResearchandApplicationofsafedisposaltechnologyoflong-closedwellSpeciality:OilandNaturalGasEngineeringABSTRACTWermanoilfieldishighpressureandhighgas/oilratioreservOir.After30yearsofdevelopment,ithasprovidedalargeamountofoilandga
6、sresourcesforourcountry.However,withtheexploitationoftheundergroundoilandgasresources,theoilfieldisageing.Andthenumberoflong-closedwellisbecominglarger.Astheinvestmentofwellcontrolislessandstandardisnotunifiedintheoldoilfield,thehiddendangersoflong-closedwellforwe
7、llcontrolismoreandmoreprominent.Since2012,throughthegroundsupportingperfecting,processinnovation,operationprocedurespecificationanddownholehandlingtechnologyinnovation,ithasformedtheWermanoilfieldsafetydisposaltechnologyoflong-closedwellcontrol,withthecombinationo
8、fgroundandundergroundandmanagement.The255longclosedandabandonedwellshasbeeneffectivelydisposedsafely,whicheffectivelyavoidedenvironmentalpollutionandthe
