OCTG Casing yog tsim los ntawm ntau qib, txhua tus muaj nws tus kheej cov yam ntxwv tshwj xeeb, txhawm rau ua kom tau raws li qhov xav tau ntawm cov ntawv thov tshwj xeeb. Cov qib zoo ntawm OCTG casing yeeb nkab cov khoom suav nrog API J55, API K55, API L80, API N80, API P110, API Q125, API S135 thiab API V150. Cia peb saib cov qib no kom ntxaws ntxiv.
API J55
API J55 casing yog cov hom phiaj dav dav uas yog qib feem ntau siv rau cov roj thiab roj qhov dej. Nws yog lub npe hu rau nws tus nqi pheej yig thiab ntau yam xwm txheej. Nws feem ntau yog xaiv thaum tus nqi yog qhov kev txiav txim siab loj. J55 casing muaj cov txiaj ntsig qis thiab lub zog tensile, xws li ntawm 73, 000 psi mus rau 92, 000 psi feem. Nws yog feem ntau siv nyob rau hauv qhov dej ntiav uas tsuas yog yuav tsum muaj kev tswj hwm me me los yog thaum muaj kev pheej hmoo tsawg ntawm hydrogen sulfide corrosion.
API K55
K55 casing muaj zog me ntsis dua J55 thiab raug cais raws li qib nruab nrab lub zog. Nws yog qhov zoo tshaj plaws rau kev siv hauv cov qhov dej ntiav uas tsis muaj kev txwv nruj thiab yuav tsum muaj corrosion. Nws tseem muaj zog dua thiab tuaj yeem tiv taus siab dua li J55. Nws muaj lub zog nruab nrab ntawm 82, 000 psi thiab qhov nruab nrab tensile zog ntawm 110, 000 psi. Nws yog feem ntau siv nyob rau hauv qhov dej onshore xav tau nruab nrab tensile thiab yield zog.
API L80
L80 casing yog qib siab zog dua li J55 thiab K55. Nws combines zoo zog thiab toughness nyob rau hauv ib qib. Nws yog tshwj xeeb tshaj yog haum rau kev ua haujlwm qaub thiab feem ntau siv offshore. Nws muaj lub zog nruab nrab ntawm 83,500 psi thiab qhov nruab nrab tensile zog ntawm 95,000 psi. Nws muab kev tiv thaiv corrosion zoo dua, ua rau nws zoo tagnrho rau cov qhov tob tob nrog cov khoom siv siab dua.
API N80
N80 casing yog qib siab dua L80 thiab muaj lub zog zoo dua thiab kev ua tau zoo hauv qhov tob txog li 20, 000 ft. Nws yog feem ntau siv nyob sab nraud thiab muaj qhov nruab nrab tawm los ntawm 85, 000 psi thiab qhov nruab nrab tensile zog ntawm 100, 000 psi. Nws muab kev tiv thaiv zoo tshaj plaws tiv thaiv corrosion ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov qhov dej sib sib zog nqus, siab-siab.
API P110
P110 casing yog qib siab tshaj ntawm OCTG casing muaj. Nws ua ke tshwj xeeb lub zog thiab ductility, nrog qhov nruab nrab tawm los ntawm 105, 000 psi thiab qhov nruab nrab tensile zog ntawm 125, 000 psi. Nws yog feem ntau siv offshore thiab haum rau qhov tob txog li 30, 000 ft. Nws kuj tseem tiv taus corrosion thiab muaj peev xwm tswj tau zoo dua.
API Q125
Q125 casing yog cov khoom lag luam zoo tshaj plaws nrog lub zog tshwj xeeb thiab ductility. Nws feem ntau xaiv rau kev thov, xws li qhov tob tob thiab siab siab. Nws muaj lub zog nruab nrab ntawm 115, 000 psi thiab qhov nruab nrab tensile zog ntawm 140, 000 psi. Nws yog feem ntau siv nyob rau hauv qhov dej offshore, tab sis kuj tuaj yeem pom nyob rau hauv qee qhov dej hiav txwv.
API S135
S135 casing yog cov khoom siv rau kev siv qhov tob tob, xws li cov qhov dej tob tob. Nws yog lub npe hu rau nws lub zog superior thiab ductility thiab muaj peev xwm tiv taus siab heev. Nws muaj qhov nruab nrab tawm lub zog ntawm 125, 000 psi thiab qhov nruab nrab tensile zog ntawm 155, 000 psi. Nws kuj tseem tiv taus corrosion thiab yog li zoo tagnrho rau cov xwm txheej huab cua tshaj plaws.
API V150
V150 casing yog qib siab tshaj ntawm OCTG casing muaj. Nws muaj qhov nruab nrab lub zog ntawm 135, 000 psi thiab qhov nruab nrab tensile zog ntawm 165, 000 psi. Nws yog tsim los tiv thaiv qhov siab tshaj plaws thiab qhov tob, thiab feem ntau yog siv hauv cov dej tob tob. Nws lub zog zoo dua thiab ua haujlwm ntev ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev ua haujlwm nyuaj drilling.
