Lapho kumbiwa imithombo kawoyela negesi, ukuhambisa i-casing kuze kufike phansi emgodini kanye nokuthola izinga elihle likasimende kubalulekile. I-Casing ishubhu elehlela emthonjeni ukuvikela umthombo ekubhidlikeni futhi ihlukanise indawo ekhiqizayo kwezinye izinhlobo. I-Casing kufanele igxile ngokuphelele futhi ivikeleke endaweni ukuze kuqinisekiswe ukusebenza kahle nokuphepha. Lapha kulaphoama-centralizersngena ukudlala.
A ama-centralizersiyithuluzi elisiza ukugcina i-casing isendaweni futhi igcine imaphakathi ne-borehole ngesikhathi senqubo yokufaka usimende.Ama-Centralizersziyizingxenye ezibalulekile zemishini yokuqedela ngoba ziqinisekisa ukuthi usimende ugcwalisa ngokulinganayo i-annulus phakathi kwe-casing nodonga lomthombo, okudala isibopho esiqinile futhi kuvimbele ukufuduka koketshezi.
Ama-Centralizersbanezinhlobonhlobo zemiklamo nezitayela, kusukela entwasahlobo yomnsalo kanyeama-centralizers aqinilekuya ezinguqulweni ezintsha, ezithuthuke kakhulu njengezigcinamandla ezizungezisayo nezingazungezi. Lawa madivaysi akhethwa ngokuya ngezimo zemithombo kanye nezidingo zikasimende. Isibonelo, ama-centralizers aqinile asekela imithombo afanele imithombo eqondile kanye nemithombo ethambekele kakhulu egoba kancane, kuyilapho.bow spring centralizersafanele imithombo ethambekele kanye nemithombo yama-engeli amancane anezidingo ezinkulu.
Uma i-casing ingagxiliwe ngokwanele, usimende ngeke usatshalaliswe ngokulinganayo, okungaholela emigodleni yesimende yendawo noma imiphumela yomzila. Lokhu nakho kungaba nomthelela omubi ekusebenzeni komthombo futhi, okubaluleke kakhulu, nokuphepha. Ingxenye yesigxobo sikasimende ingabangela usimende ukuba ungaphumeleli futhi uvumele ukufuduka koketshezi, kubeke engcupheni ubuqotho bomthombo nokudala izingozi ezingaba khona zemvelo.
Ukuze uvimbele izinkinga ezinjalo, kubalulekile ukukhetha i-centralizer efanele futhi uqinisekise ukufakwa okufanele. Abanyeama-centralizers, ikakhulukazi izinhlobo ezintsha ezijikelezayo nezingaphenduki, zinikeza ukunemba okukhulu kokubeka kanye namazinga okusebenza aphezulu kunama-centralizers okuvamile.
Izindlela zokufaka ezifanele kufanele zilandelwe ukuze kuzuzwe ukuxhumana okuphezulu phakathi kwe-casing nodonga lomthombo. Ngokulandela le mihlahlandlela, iama-centralizersingafaka usimende umthombo futhi imise ikeseji kahle, okuholele ekutheni kube nekhwalithi ephezulu, ekhiqizayo futhi ephephile kahle.
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Isikhathi sokuthumela: May-16-2023
