Isikhwama sikawoyela si-aipayipi lensimbi engenamthungoesetshenziselwa ukusekela udonga lomthombo wemithombo yamafutha negesi ukuze kuqinisekiswe ukusebenza okuvamile kwawo wonke umthombo wamafutha ngesikhathi sokumba futhi ngemva kokuqedwa.Izingqimba eziningana ze-casing zizosetshenziselwa umthombo ngamunye ngokuya ngokujula okuhlukene kokumba kanye nezimo ze-geological.Usimende uzosetshenziselwa ukufaka usimende ngemuva kokusebenza kwebhokisi.Ihlukile epayipini likawoyela kanye nepayipi lokubhoboza futhi ayikwazi ukuphinda isetshenziswe.Yimpahla esebenzisekayo elahlwayo.Ngakho-ke, ukusetshenziswa kwamapayipi e-casing kubala ngaphezu kuka-70% wawo wonke amapayipi omthombo kawoyela.
Amapayipi kawoyela akhethekile asetshenziselwa ikakhulukazi ukumba imithombo kawoyela negesi kanye nokudluliswa kukawoyela negesi.Kuhlanganisa ipayipi lokumba uwoyela, isikhwama sikawoyela kanye nepayipi lokukhipha uwoyela.Ipayipi lokubhola likawoyela lisetshenziselwa ikakhulukazi ukuxhuma ikhola yokubhoboza kanye ne-drill bit kanye nokudlulisa amandla okumba.Isikhwama samafutha sisetshenziselwa ngokuyinhloko ukusekela udonga lomthombo ngesikhathi sokumba nangemva kokuphothulwa komthombo, ukuze kuqinisekiswe inqubo yokubhoboza kanye nokusebenza okuvamile kwawo wonke umthombo wamafutha ngemva kokuqedwa komthombo.Ipayipi elikhipha uwoyela ngokuyinhloko lithutha uwoyela negesi ngaphansi komthombo kawoyela liye phezulu.
Isikhwama samafuthaiyindlela yokuphila yokugcina ukusebenza komthombo kawoyela.Ngenxa yezimo ezihlukene zejoloji, isimo sokucindezeleka kwe-downhole siyinkimbinkimbi, futhi izingcindezi eziqinile, ezicindezelayo, ezigobayo nezinyakazayo zisebenza emzimbeni wepayipi, okubeka phambili izidingo eziphakeme zekhwalithi ye-casing ngokwayo.Uma i-casing ngokwayo ilimele ngesizathu esithile, ukukhiqizwa kwawo wonke umthombo kungase kuncishiswe noma kukhishwe.
Ngokusho kwamandla ensimbi ngokwayo, i-casing ingahlukaniswa ngamamaki ensimbi ahlukene, okuyi-H40, J55, K55, N80, L80, C90, T95, P110, q125, V150, njll. Imininingwane eyinhloko yi-139.77 * 72r- 2.Ezimweni ezigqwalile, i-casing ngokwayo nayo iyadingeka ukuthi ibe nokumelana nokugqwala.Ezindaweni ezinezimo ze-geological eziyinkimbinkimbi, i-casing nayo iyadingeka ukuze ibe nokusebenza kokulwa nokuwa.
Amafomu okucubungula okuphela kwebhokisi likawoyela: intambo eyindilinga emfushane, intambo ende eyindilinga, intambo ye-trapezoidal, ibhande elikhethekile, njll. Isetshenziselwa ikakhulukazi ukusekela udonga lomthombo ngesikhathi sokumba nangemva kokuqedwa, ukuze kuqinisekiswe inqubo yokubhoboza nokusebenza okuvamile wonke amafutha kahle ngemva kokuqedwa.
Isikhathi sokuthumela: Jun-14-2022