Lub ntsiab
API spec 5ct(Casing thiab tubing specification) yog ib txoj kev luam tawm los ntawm American petroleum lub koom haum (API) uas yuav tsum tau ua rau cov kav dej steel (cov khoom siv
N80yog ib qho tshwj xeebteem nqiNtawm cov hlau txhais hauv qhov kev qhia tshwj xeeb no. "N" Sawv rau qib nrog nominal xa lub zog, thiab "80" qhia tias aYam tsawg kawg nkaus los lub zog ntawm 80,000 PSI(80 ksi).
Tsis ntseHais txog kev tsim khoom tsim mus qhov twg cov yeeb nkab tsim los ntawm cov khoom khov kho cov hlau billet, uas yog rhuab thiab dov thiab dov mus rau qhov loj me me. Qhov no tsim cov yeeb nkab yam tsis muaj lub zog loj dua, muab lub zog zoo dua thiab lub siab ncaj ncees piv rau kev siv hluav taws xob welded, ua rau nws zoo tagnrho rau kev xav tau ib puag ncig.
Cov yam ntxwv tseem ceeb ntawm API 5CT N80 Seamless Yeeb Nkab
1. Cov Khoom Siv Neeg Kho Tshuab
Qhov no yog tus tseem ceeb ntawm N80 qib txhais.
| Ntiag tug | Qhov toob kas | Sau ntawv |
|---|---|---|
| Yam tsawg kawg nkaus xwb Zog | 80,000 psi (552 mpa) | Qhov no yog kev ntxhov siab uas cov khoom pib ua kom deform plastically. Nws yog ib qho kev tsim qauv tseem ceeb heev rau cov muaj kev ntsuas siab thiab lub tensile loads. |
| Qhov Tshaj Tawm Los Muaj Zog | 110,000 psi (758 MPA) | API teeb tsa qhov siab tshaj plaws kom ntseeg tau kev ua tau zoo thiab du. |
| Yam tsawg kawg tensile lub zog | 100,000 psi (689 MPa) | Kev ntxhov siab thaum twg cov khoom tawg. Qhov sib piv ntawm cov qoob loo - - tensile lub zog yog qhov tseem ceeb rau tsim qauv zoo. |
| Hardness (HRC) | Siab kawg 23 | Qhov no feem ntau rau covN80 hom 1qib. Cov kev txwv tawv tawv txwv yog qhov tseem ceeb rau kev pab qaub (h₂s ib puag ncig) kom tiv taus sulfide kev ntxhov siab tawg (SSC). |
2. Hom N80 Qib
Muaj ob hom tseem ceeb ntawm N80, txawv ntawm lawv txoj kev kho cua sov thiab haum rau cov kev pabcuam hauv kev pabcuam:
N80 hom 1:Nov yog tus qauv, hom feem ntau. Nws tau tiav los ntawmnormalizing, los yog ib txwm thiab npau tawsCov. Nws muaj qhov siab tshaj plaws txwv ntawm 23 teev tab sis yogTsis pom zoo rau Sour kev pabcuamTshwj tsis yog kom meej meej ntsuas thiab tsim nyog los ntawm tus neeg siv.
N80 hom Q (quenched thiab tempered):Hom no undergoes ib tug mainment ntau duaquenching thiab temperingtxheej txheem. Nws muaj ntau cov kev coj ua kom zoo dua microstructure thiab cov khoom siv zoo dua. Nws tseem muaj qhov siab tshaj plaws ntawm 23 teev. Thaum tseem tsis cia li tsim nyog,N80-Q muaj cov peev txheej zoo dua rau SSCTshaj li hom 1 thiab feem ntau tau xaiv rau cov kev mob me me tom qab ntsuas kev tshuaj xyuas kom zoo.
3. Tshuaj lom neeg muaj pes tsawg leeg
API 5CT tsis qhia meej cov tshuaj sib xyaw ua ke rau N80. Hloov chaw, nws teeb tsa kev ua tau zoo (cov khoom siv kho tshuab). Cov tshuaj lom neeg muaj pes tsawg leeg yog sab laug rau tus qauv tsim kom tau raws li cov khoom ntawd. Txawm li cas los xij, kev sib sau ua ke muaj xws li carbon, manganese, thiab lwm cov ntsiab lus kom ua tiav lub zog thiab kev nruj.
4. Tus Qauv Sab Laj
Cov kav dej yog tsim kom meej ofter at dauv (OD), phab ntsa thicknesses (wt), thiab hnyav ib txhais ko taw, raws li sau tseg hauv API 5ct. Cov qauv tsim muaj xws li:
:Diamool tshaj plaws (piv txwv li, 4-1 / 2 ", 5-1 / 2", 7, 9-5 / 8 ") siv los lis cov phiaj xwm qhov chaw nkaum.
Tubing:Cov diamital me me (piv txwv li, 2-3 / 8 ", 2-7 / 8") siv nyob rau hauv lub casing ua cov conduit rau roj thiab roj ntau lawm.
5. Xov thiab Coupling
N80 kav tuaj yeem muab tau raws li:
Plain Kawg (PE):Yeeb nkab xaus yog txiav square.
Threaded thiab Coupled (T & C):Xaus yog Threaded, thiab ib qho kev tiv thaiv kev tiv thaiv yog ntsia hlau.
Chim siab (ue):Cov yeeb nkab kawg yog forged rau ib qho sab nraud uas hla (chim siab) kom haum cov xov muaj zog. N80 muaj nyob rau hauv ob qho tib siTsis - chim (nu)thiabChim siab (EU)versions.
Hom Xov Cov Xov Xwm suav nrog API Round Xov (BTC / LC), API Buttrab Xov (BTC), thiab Hwm cov kev sib txuas rau cov ntawv tseem ceeb.
Cov Kev Siv Raug Raug
N80 yog ib qho ntau yam, nruab nrab - lub zog kawm dav dav hauv:
Ntau lawm Casing:Cov txheej txheem kawg ntawm txoj hlua uas muaj hydrocarbons tau tsim tawm.
Nruab nrab casing:Siv los cais cov qauv tsis ruaj khov los yog qis {- siab a} siab a.} siab a.} siab a.} pressure pressure} siab a.
Nto casing:Thawj txoj hlua teev nyob rau hauv lub qhov dej los tiv thaiv cov dej tsis huv.
Tubing:Rau kev tsim khoom hauv wells nrog kev ntsuas sib txawv.
Tsis - Cov Ntawv Thov Cov Tshuaj Tiv Thaiv:Vim nws lub zog zoo thiab muaj, nws kuj yog siv rau hauv cov ntawv thov kev siv tshuab, thiab cov kua kub}}} kev lag luam hauv lwm qhov kev lag luam.
Kev sib piv nrog lwm cov qib kawm
| Teem nqi | Min. Yield zog (PSI) | Cov yam ntxwv tseem ceeb & raug |
|---|---|---|
| J55 | 55,000 | Txo lub dag zog, kev lag luam, siv nyob rau hauv ntiav, tsawg - qhov zoo} qhov siab. |
| K55 | 55,000 | Zoo sib xws lub zog rau J55 tab sis nrog kev tswj tshuaj sib zog. |
| N80 | 80,000 | "Cov Tsev Haujlwm" Qib.Kev ntsuas lub zog thiab tus nqi rau nruab nrab - qhov tob. |
| L80 | 80,000 | Lub zog zoo ib yam li N80, tab sis nrog cov leeg stricter / kho cua sov tswj thiab ib qho siab tshaj plaws ntawm 23 hrc.Tsim los rau cov kev pab qaub (h₂s). |
| P110 | 110,000 | Siab zog rau kev sib sib zog nqus, siab - qhov zoo} qhov zoo. Tsis yog rau cov kev pab qaub. |
| Q125 | 125,000 | Lub zog siab heev rau huab - qhov tob thiab high- qhov kev siv siab. |
Lub ntsiab
IbAPI 5CT N80 Seamless Steel Yeeb NkabYog lub siab - Zoo, cov yeeb nkab robust tsis muaj ib txoj leeg uas yuav tsum tau ua raws li cov roj thiab roj kev lag luam. Nws txhais tau hais tias yog nws80,000 psi yam tsawg kawg nkaus los lub zog, ua nws xaiv nrov thiab txhim khu kev qha rau ntau cov kev tsim kho tau zoo thiab kev tsim khoom thiab cov neeg kho kom muaj kev txhawj xeeb tsis yog qhov kev txhawj xeeb thawj.
