API 5CT Qib N80 Casing Pipe yog dab tsi?
API 5CT Qib N80 yog siab -lub zog carbon-manganese seamless steel yeeb nkab siv rau kab roj thiab roj qhov dej. Nws yog tsim los ntawm kub dov thiab muaj nyob rau hauv ob qib khoom: N80-1 thiab N80Q. Qib N80 zaum hauv nruab nrab ntawm API 5CT casing lub zog ntaiv, saum toj J55 thiab K55 thiab qis dua P110, thiab tau dav dav teev rau nruab nrab casing, ntau lawm casing thiab dej-zoo casing qhov twg ntau dua vau thiab tawg tiv thaiv yuav tsum tau.
Ntsiab Mechanical Properties
Qhov kev ua tau zoo ntawm N80 casing yog txhais los ntawm API 5CT thiab txheeb xyuas los ntawm kev sim tensile, flattening testing thiab hydrostatic testing ntawm txhua qhov kub. Cov lus hauv qab no qhia txog qhov yuav tsum tau ua.
| Khoom | N80 Kev xav tau |
|---|---|
| Yield zog | 552-758 MPa (80,000-110,000 psi) |
| Tensile zog | 689 MPa yam tsawg kawg nkaus (100,000 psi) |
| Elongation | Muab xam los ntawm API 5CT formula e=625,000 A^0.2 / U^0.9, feem ntau 13-18% rau qhov ntau thiab tsawg |
| Kev kho cua sov, N80-1 | Raws li - dov, normalized, los yog normalized thiab tempered |
| Kev kho cua sov, N80Q | Quenched thiab tempered, nrog Charpy V-notch impact verification |
| Deg mob | Seamless, kub- dov tiav, nrog lossis tsis muaj kev tshuaj ntsuam xyuas ib API 5CT |
N80-1 vs N80Q
Qhov txawv ntawm N80-1 thiab N80Q yog nyob rau hauv lub tshav kub- txoj kev kho mob thiab qhov ua rau muaj kev ruaj ntseg toughness. N80-1 tej zaum yuav raug xa raws li{10}} dov los yog normalized, yog li nws tsis muaj kev lav phib xaub rau Charpy. N80Q yuav tsum tau quenched thiab tempered thiab raug rau Charpy V-notch cuam tshuam kev ntsuam xyuas raws li teev nyob rau hauv API 5CT, uas ua rau nws nyiam xaiv qhov uas tsis muaj-kub ductility thiab notch toughness teeb meem nyob rau hauv lub zoo tsim.
Hauv Suav teb, 36Mn2V micro-alloyed steel feem ntau yog siv los tsim N80-1 casing yam tsis muaj quenching thiab tempering. Los ntawm kev tswj cov dov kub, txias tus nqi thiab deformation, cov yeeb nkab ncav cuag lub zog yuav tsum tau ncaj qha los ntawm lub zeb, uas yooj yim rau cov txheej txheem ntau lawm thiab txo cov nqi tsim khoom thaum tseem ntsib API 5CT lub hnab ntawv lub zog.
Muaj Qhov Loj, Qib thiab Kev Sib Txuas
N80 casing yog muab los ntawm tus qauv API casing loj ntau yam nrog puag ncig- xov los yog lub taub qab- xov txuas.
| Yam khoom | Ntau yam |
|---|---|
| Casing sab nraud txoj kab uas hla | 4-1/2, 5, 5-1/2, 6-5/8, 7, 7-5/8, 8-5/8, 9-5/8, 10-3/4, 11-3/4, 13-3/8, 16, 18-5/8 thiab 20 nti |
| Cov qib steel ntawm tib txoj haujlwm zeb | J55, K55, N80-1, N80Q, L80-1, P110, L80-3Cr, 9Cr, 13Cr thiab P110-13Cr |
| Hom kev sib txuas | Short round thread STC, long round thread LTC, buttress thread BTC and premium gas-tight connections |
| Cov txheej txheem ntau lawm | Kub- dov seamless |
| Ntim | Steel sawb los yog steel ncej bundles, los yog ib tug neeg yuav tsum tau |
Tej kev siv
N80 casing yog siv nyob rau hauv cov roj thiab roj drilling rau saum npoo casing, intermediate casing thiab ntau lawm casing, nyob rau hauv cov dej sib sib zog nqus dej{1}} zoo tsim thiab nyob rau hauv lub geothermal qhov dej. Lub 552-758 MPa yield range muab kev sib tsoo zoo nyob rau hauv qhov sib sib zog nqus los yog qhov siab-siab thaum seem sib xws nrog cov txheej txheem rig tuav, cementing thiab perforating xyaum.
Xaiv thiab tuav cov ntsiab lus
Xaiv N80Q es tsis txhob N80-1 thaum tus tsim hu rau Charpy cuam tshuam kev kuaj, piv txwv li nyob rau hauv txias-kev ua haujlwm hauv cheeb tsam lossis qhov kev tshuaj ntsuam nruj yog ib feem ntawm cov khoom specification. Rau kev lees paub qhov kev pabcuam qaub, tshuaj xyuas L80 lossis 13Cr qib, uas muaj cov kev txwv nyuaj uas tsis muaj N80. Tiv thaiv cov xov nrog kev pom zoo xov sib txuas thiab cov khoom tiv thaiv, siv cov khoom siv tsis sib xws, thiab xyuas txhua qhov sib koom ua ke tiv thaiv daim ntawv pov thawj zeb rau cov xov tooj cua sov, qhov loj, qib thiab hom kev sib txuas ua ntej khiav txoj hlua.
Kev Ntseeg Tsis Zoo
N80 casing tsis tuaj yeem tiv taus corrosion; N80 dawb tsis muaj lub hau tawv thiab tsis yog qhov kev xaiv zoo rau hydrogen -sulfide kev pabcuam. Tus lej qib siab dua tsis yog ib txwm txhais tau tias muaj qhov zoo dua, vim tias qhov kev sib tsoo thiab tawg yog nyob ntawm phab ntsa tuab thiab hom kev sib txuas ntau npaum li lub zog. N80Q tsis yog qhov muaj zog dua ntawm N80; Lub zog ntau yam zoo ib yam, thiab Q lub npe hloov pauv tsuas yog kev kho cua sov thiab kev ruaj ntseg toughness.
FAQ
N80 txhais li cas hauv API 5CT?
N80 tsim cov casing thiab tubing nrog qhov tsawg kawg nkaus lub zog ntawm 80,000 psi (552 MPa) thiab lub zog tensile yam tsawg kawg nkaus ntawm 100,000 psi (689 MPa).
Qhov txawv ntawm N80-1 thiab N80Q yog dab tsi?
N80-1 tej zaum yuav raug xa raws li- dov los yog normalized, thaum N80Q yuav tsum tau quenched thiab tempered thiab yuav raug rau Charpy V-notch cuam tshuam kuaj raws li teev nyob rau hauv API 5CT.
Puas yog N80 casing haum rau kev pabcuam qaub?
Tsis yog. Rau hydrogen-sulfide ib puag ncig API 5CT pom zoo cov qib nrog hardness txwv xws li L80. Plain N80 tsis nqa qhov siab tshaj plaws hardness yuav tsum tau.
Cov kev sib txuas dab tsi muaj rau N80 casing?
Cov kev xaiv muaj xws li luv round thread STC, ntev round thread LTC, buttress thread BTC thiab premium gas-tight connections.
Dab tsi yog qhov kev tawm dag zog ntawm N80 casing?
N80 yield zog yog 552-758 MPa, sib npaug rau 80,000-110,000 psi.
N80 casing tuaj yeem siv rau cov dej hauv qhov dej?
Yog lawm, N80 seamless casing feem ntau siv hauv dej tob -qhov kev tsim kho qhov chaw muaj zog dua qhov tawg ua rau cov nqi khoom siv.