API 5CT L80-13Cr Casing Pipe
L80-13Crsiv chromium (Cr) ua cov ntsiab lus alloying, thiab nws cov khoom siv kho tshuab tuaj yeem hloov kho los ntawm cov txheej txheem kho cua sov kom ua tiav qib L80 thiab Super 13Cr110. Hauv CO₂- muaj cov roj thiab roj ib puag ncig, nws tus nqi corrosion tsuas yog 1/30 txog 1/300 uas zoo tib yamN80Qsteel, qhia tau zoo heev corrosion kuj. Nws kuj muaj seawater corrosion kuj, ua rau nws haum rau offshore roj thiab roj extraction.
API 5CT L80-13Cr Casing Steel Yeeb Nkab Qhia Txog Xim Band Rooj
Txhawm rau paub qhov txawv ntawm qhov siab no -tus nqi alloy yeeb nkab nyob rau hauv daim teb, API 5CT qhia tshwj xeeb xim coding system:
| Qib | Lub cev Band Xim | Coupling Xim |
| L80-13Cr | 1 Liab + 1 Brown band | Tag nrho coupling Liab nrog 1 Brown kab txaij |
API 5CT L80-13Cr Casing Tubing Chemical Composition (%)
Kev tiv thaiv corrosion ntawm 13Cr yog muab los ntawm nws cov ntsiab lus Chromium siab.
| Lub ntsiab | C | Mn | P | S | Si | Cr | Ni | Cu |
| Cov ntsiab lus (%) | Tsawg dua lossis sib npaug li 0.22 | 0.25 - 1.00 | Tsawg dua los yog sib npaug rau 0.020 | Tsawg dua lossis sib npaug li 0.010 | Tsawg dua los yog sib npaug li 1.00 | 12.0 - 14.0 | Tsawg dua los yog sib npaug li 0.50 | Tsawg dua los yog sib npaug li 0.25 |
API 5CT L80-13Cr Seamless Oil Pipe Mechanical Properties
| Khoom | Kev xav tau |
| Yield zog | 552 - 655 MPa (80 - 95 ksi) |
| Tensile zog | Ntau dua lossis sib npaug rau 655 MPa (95 ksi) |
| Maximum Hardness | Tsawg dua lossis sib npaug li 23 HRC |
| Min. Elongation | Muab xam raws li API qauv rau ib cheeb tsam |
API 5CT L80-13Cr Roj Thiab Roj Casing Pipes Chaw Tsim Tshuaj
Vim lub metallurgical yam ntxwv ntawm 13Cr, cov txheej txheem tsim yog nruj me ntsis tswj:
Seamless (SML):API 5CT tau txiav txim siab tias L80-13Cr yuav tsum tau tsim los siv cov txheej txheem seamless.
Tsis muaj vuam:Hluav taws xob Resistance Vuam (ERW) thiab lwm yam vuam txoj kev yog nruj me ntsis txwv tsis pub vim lub weld cheeb tsam yog heev raug rau kev ua tau zoo degradation nyob rau hauv corrosive ib puag ncig.
Txoj kev kho cua sov rau cov kav dej L80-13Cr
Kev kho cua sov yog qhov tseem ceeb rau kev ua tiav cov qauv martensitic thiab corrosion kuj:
Quench & Temper (Q&T):Cov kav dej yuav tsum tau puv -ntev quenching thiab tempering.
Lub Hom Phiaj:Txhawm rau tsim cov txheej txheem tempered martensite, ua kom cov khoom ua tiav 80 ksi yield zog thaum khaws cov hardness nyob rau hauv ib qho tshwj xeeb los tiv thaiv brittleness.
API 5CT L80-13Cr OCTG Casing Dimension thiab Tolerances Table
| Parameter | Tolerance Yuav Tsum Tau |
| Sab nraud txoj kab uas hla (OD) |
Ntau tshaj los yog sib npaug rau Greater dua los yog sib npaug 4.5 ": +1.00% / -0.50%; < 4.5": ± 0.79mm |
| Phab ntsa Thickness (WT) | Yam tsawg kawg nkaus87.5%ntawm nominal (-12.5%) |
| Qhov hnyav | Ib qho kev sib koom ua ke: +6.5% / -3.5%; Load: -1.75% |
| Kev ncaj | Tag nrho kev sib txawv Tsawg dua lossis sib npaug Less dua lossis sib npaug 0.2% ntawm qhov ntev |
| Drift | Yuav tsum dhau tus qauv API drift mandrel |
API 5CT L80-13Cr Petroleum Casing Pipe Connection Hom, Xaus, thiab Couplings
Vim tias 13Cr feem ntau siv rau hauv siab - cov roj qhov dej siab, kev xaiv kev sib txuas yog qhov tseem ceeb:
Hom kawg:Plain End (PE), Threaded & Coupled (T&C).
Standard API Xov:BTC (Buttress Thread), LTC (Long Round Xov).
Kev sib txuas hwm hwm:Gas - nrujHwm Kev Sib Txuasmuaj ntau heev nyob rau hauv 13Cr tej yaam num los xyuas kom meej xoom to nyob rau hauv siab - siab CO2 ib puag ncig.
Kev Kho Coupling:Feem ntau suav nrog phosphating los yog tshwj xeeb los tiv thaiv- txhuam txheej los tiv thaivsiab, uas stainless hlau yog heev nquag mus rau thaum lub sij hawm ua -up.
Kev tshuaj xyuas rau L80-13Cr Casing thiab Tubing
Txij li thaum 13Cr yog siv rau hauv qhov dej tseem ceeb, kev tshuaj xyuas yuav tsum nruj dua li cov pa roj carbon steel:
Full -Length Ultrasonic Testing (UT):Txhawm rau txheeb xyuas qhov tsis zoo sab hauv thiab sab nraud hauv cov yeeb nkab lub cev.
Electromagnetic Inspection (EMI):Txhawm rau pab txhawm rau txheeb xyuas qhov tawg ntawm qhov chaw.
Kev kuaj Hardness:Qhov yuav tsum tau ua kom ntseeg tau tias qhov hardness nyob rau hauv API txwv (tiv thaiv hydrogen{0}}induced cracking).
Hydrostatic Test:Txhawm rau txheeb xyuas qhov siab ncaj ncees thiab muaj peev xwm sealing.
Drift Test:Txhawm rau kom ntseeg tau tias lub taub sab hauv yog qhov tseeb rau cov cuab yeej downhole.
Metallographic Analysis:Txhawm rau txheeb xyuas qhov microstructure yog tag nrho tempered martensite.
API 5CT L80-13Cr Oil Well Drilling Casing Pipe test thiab tshuaj xyuas
API 5CT L80-13Cr Casing yeeb nkab Hoobkas
FAQ
13cr L80 khoom yog dab tsi?
API 5CT L80-13Cryog martensitic stainless hlau casing thiab tubing muaj kwv yees li 13% chromium, tshwj xeeb tshaj yog tsim los tiv thaiv carbon dioxide (CO2) corrosion, feem ntau hu ua "kev pab qab zib." Kev ua tiav raws li cov yeeb nkab quenched thiab tempered seamless yeeb nkab, nws muab lub zog tawm ntawm 80 ksi thaum tuav lub hardness txwv ntawm 23 HRC, muab tus nqi tshaj plaws - siv tau los hloov cov qauv carbon steel hauv siab - CO2ib puag ncig kom ncua ntev lifespan. Txawm li cas los xij, nws yog feem ntau npaj rau kev pabcuam qab zib thiab tsis tsim nyog rau kev pabcuam qaub qaub nrog cov ntsiab lus siab ntawm Hydrogen Sulfide ( H2S ).
Lub zog tawm ntawm L80-13Cr yeeb nkab yog dab tsi?
Lub zog tawm los ntawm API 5CT L80-13Cr yeeb nkab tau txhais raws li hauv qab no:
Yam tsawg kawg nkaus Yield Strength:80,000 psi (552 MPa)
Maximum Yield Strength:95,000 psi (655 MPa)
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