I-Casing iyipayipi lensimbi elisekela izindonga zemithombo kawoyela negesi. Umthombo ngamunye usebenzisa izingqimba eziningana ze-casing kuye ngokujula kokumba kanye ne-geology. I-Casing emva komthombo wokusebenzisa usimende kusimende, i-casing kanye ne-tubing, i-drill pipe ihlukile, ayikwazi ukuphinda isetshenziswe, iyingxenye yokusetshenziswa kwezinto ezibonakalayo ngesikhathi esisodwa. Ngakho-ke, ukusetshenziswa kwe-casing kubala ngaphezu kuka-70% wawo wonke amapayipi omthombo kawoyela. I-Casing ingahlukaniswa ibe yipayipi, i-surface casing, i-technical casing kanye ne-oil layer casing ngokusho kokusetshenziswa, futhi isakhiwo sabo emthonjeni wamafutha kuboniswa emfanekisweni.
Ipayipi: elisetshenziswa kakhulu ekubholeni olwandle nasogwadule, ukuhlukanisa amanzi olwandle nesihlabathi, ukuqinisekisa ukubhola okubushelelezi, imininingwane eyinhloko yalolu ngqimba lwe-casing yilena: ∮762mm(30in) ×25.4mm, ∮762mm(30in) ×19.06mm.
I-Surface casing: ikakhulukazi esetshenziselwa ukubhola kokuqala, ukubhola inhlabathi ethambile etsheni, ukuze kuvalwe le ngxenye yenhlabathi ngaphandle kokudilika, kudingeka kusetshenziswe i-surface casing ukuze kuvalwe. Ukucaciswa okuyinhloko kwe-surface casing: 508mm(20in), 406.4mm(16in), 339.73mm(13-3/8in), 273.05mm(10-3/4in), 244.48mm(9-5/8in), njll. ukujula kwepayipi kuncike ekujuleni kokwakheka okuthambile, okuvamise ukuba ngu-80 ~ 1500m. Ukucindezela kwayo kwangaphandle nokucindezela kwangaphakathi akukukhulu, ngokuvamile kusetshenziswa i-K55 steel grade noma i-N80 steel grade.
I-casing yobuchwepheshe: isetshenziselwa inqubo yokubhoboza yokwakheka okuyinkimbinkimbi, lapho ihlangana nongqimba lokuwa, ungqimba lwamafutha, ungqimba lwegesi, ungqimba lwamanzi, ungqimba olulahlekile, ungqimba lokunamathisela usawoti kanye nezinye izingxenye eziyinkimbinkimbi, ludinga ukuvalwa, ngaphandle kwalokho ukubhoboza kungafakwa. angenziwa. Eminye imithombo ijulile futhi iyinkimbinkimbi, futhi ukujula komthombo izinkulungwane zamamitha, lo mthombo ojulile udinga izingqimba eziningana ze-casing yobuchwepheshe, izakhiwo zayo zemishini kanye nezidingo zokusebenza zokuvala ziphezulu, ukusetshenziswa kwebanga lensimbi nakho kuphakeme, ngaphezu kwalokho. I-K55, i-N80 eyengeziwe kanye nebanga lensimbi le-P110, amanye ama-Well ajulile aphinde asebenzise i-Q125 noma izinga eliphezulu lensimbi engeyona i-API njenge-V150. Ukucaciswa okuyinhloko kwebhokisi lobuchwepheshe yilezi: 339.73mm(13-3/8in), 273.05mm(10-3/4in),244.48mm(9-5/8in),219.08mm(8-5/8in),193.68 mm(7-5/8in), 177.8mm(7in), njll.
Isikhwama sesendlalelo sikawoyela: Uma ubhoboza ungqimba oluhlosiwe (ungqimba oluphethe uwoyela negesi), kuyadingeka ukuvala ungqimba lukawoyela negesi kanye nokwakheka okuveziwe okuphezulu ngegobolondo likawoyela, futhi ipayipi likawoyela lingaphakathi kwebhokisi likawoyela. Kuzo zonke izinhlobo ze-casing casing, ukujula kokumba kujule kakhulu, futhi izakhiwo zakhona zemishini kanye nezidingo zokusebenza zokuvala nazo ziphakeme kakhulu. Amabanga ensimbi yi-K55, N80, P110, Q125, V150 njalonjalo. Imininingwane eyinhloko ye-reservoir casing yilezi: 177.8mm(7in), 168.28mm(6-5/8in), 139.7mm(5-1/2in),127mm(5in),114.3mm(4-1/2in), njll. .
Isikhathi sokuthumela: Oct-13-2023
Igumbi 703 Isakhiwo B, isikhungo saseGreenland, indawo yokuthuthukiswa kwe-Hi-tech Xi'an, China
86-13609153141
