API 5CT N80-1 API Tubing
1. Core Specification: API 5CT
Nws yog dab tsi:Lub koom haum American Petroleum (API) specification rau "Casing thiab Tubing."
Lub hom phiaj:Txhais cov txheej txheem kev xa khoom rau cov kav dej steel (casing, tubing, thiab pup joints) siv hauv cov roj thiab roj qhov dej.
Contrast nrog yav dhau los:Thaum cov specs ua ntej (API 5L) yog raukab cev(surface pipelines), API 5CT yog raudownhole tubularuas tsim lub qhov dej nws tus kheej.
2. Yam khoom: Tubing
Muaj nuj nqi:Tubing yog qhovsab hauv- feem ntau txoj hlua ntawm cov yeeb nkabkhiav hauv qhov dej ua tiav.
Lub hom phiaj:Nws ua haujlwm raws li cov kav dej uas muaj roj, roj, lossis lwm yam kua dejua los ntawm lub reservoir mus rau saum npoo. Nws tau nruab rau hauv qhov loj dua - txoj kab uas hla.
Cov yam ntxwv tseem ceeb:Cov kab me me dua li casing, yuav tsum tswj lub siab sab hauv, corrosion, thiab txhua yam khoom thaum lub sij hawm tsim khoom.
3. Qib: N80
Qhov no yog qhovqib khoom siv, hais txog yam tsawg kawg nkaus txhua yam khoom:
Yam tsawg kawg nkaus Yield Strength:80,000 psi (552 MPa)
Yam tsawg kawg Tensile Strength:100,000 psi (689 MPa) - Tus nqi zoo; qhov yuav tsum tau muaj tseeb nyob ntawm subclass.
Hardness:Qhov siab tshaj plaws ntawm HRC 23 (rau N80-1, saib hauv qab).
4. Sub-Class: Hom 1 (N80-1)
Qhov no yog ibqhov tseemceeb. API 5CT N80 los ntawm ntau hom, feem ntau txawv hauvKev kho cua sovthiabtawv:
N80-1 (Tib 1):Qib no yogquenched thiab tempered (Q & T). Qhov kev kho cua sov no muab kev sib xyaw ua ke zoo ntawm lub zog thiab toughness.
N80-Q (Feem ntau sib npaug):Kuj quenched thiab tempered. "N80-1" feem ntau hais txog Q&T mob.
Lwm yam N80 Hom:N80-2 (rau H₂S kev pabcuam) yog normalized lossis normalized thiab tempered. N80-CR (Corrosion Resistant alloy) yog cov khoom sib txawv.
Lub ntsiab lus tseem ceeb:N80-1/Q yogTSIS tau txais kev pabcuam qaub(ib puag ncig muaj hydrogen sulfide, H₂S). Rau kev pabcuam qaub, yuav tsum muaj kev txwv tshwj xeeb ntawm hardness thiab kuaj ntxiv (feem ntau raws li NACE MR0175 / ISO 15156). N80-1 qee zaum siv tau rau hauv kev pabcuam qaub me me nrog kev tsim nyog.
Cov tshuaj lom neeg muaj pes tsawg leeg (kwv yees - Nws txawv los ntawm Chaw Tsim Tshuaj):
Cov pa roj carbon (C): 0.20 - 0.35%
Manganese (Mn): 1.00 - 1.50%
Lwm Yam Khoom:Tswj cov nyiaj ntawm Si, P, S, Cr, Mo, Ni, thiab lwm yam.
Summary & Ib Daim Ntawv Thov:
Koj tab tom saibsiab -lub zog, quenched thiab tempered steel tubingtsim los rau downhole ntau lawm kev pab cuam nyob rau hauv cov roj thiab roj qhov dej.
Kev siv ntau:
Cov tubing ntau lawm hauv cov qauv (tsis yog- qaub) roj qhov dej.
Txhaj tubing rau dej los yog roj txhaj.
Kev ua haujlwm thiab ua tiav cov hlua.
Siv nyob rau hauv lub qhov dej qhov nruab nrab lub zog (80 ksi tawm los) yog yuav tsum tau los lis downhole pressures thiab loads.
Cov ntaub ntawv uas ploj lawm (feem ntau teev nyob rau hauv ib qho kev txiav txim):
Loj:Piv txwv li, 2-3/8", 2-7/8", 3-1/2" (sab nraum txoj kab uas hla)
Phab ntsa Thickness / Nyhav:eg, 4.70 lb/ft, 6.50 lb/ft
Xov Hom & Coupling:Piv txwv li, API EUE (External Upset End) nrog API Coupling, lossis kev sib txuas hwm zoo li VAM, Hydril, thiab lwm yam.
Ntev Ntau:Piv txwv li, Range 2 (≈ 6.1 - 7.6 m), Range 3 (≈ 11 - 12 m)
Delivery condition:Piv txwv li, Plain End, Threaded & Coupled (T&C).
Kab hauv qab:Qhov no yog tus qauv, dav siv qib ntawm cov tubing ntau lawm rau cov kev siv zoo li qub. Qhov kev xaiv "N80-1" yog qhov tseem ceeb, lees tias nws nyob hauv qhov kub thiab txias.
