L80-9Cr Roj Casing
API 5CT L80-9Cr Roj Casing yog dab tsi?
API 5CT L80-9Cryog ib qho tshwj xeeb corrosion-resistant alloy (CRA) casing yeeb nkab tsim rau cov qhov dej nrog nruab nrabCov pa roj carbon dioxide (CO2 )qib thiab kub siab. Nws yog cov hlau alloy uas muaj9% Chromiumthiab1% Molybdenum.
Technically, L80-9Cr txuas qhov sib txawv ntawm tus qauvL80-1 (carbon steel) thiabL80-13Cr(stainless hlau). Cov ntsiab lus 9% Chromium muab cov txheej txheem tiv thaiv qhov hnyav -tsis xeb, thaum Molybdenum txhim kho kev tiv thaivpittingthiab tuav lub zog ntawm qhov kub thiab txias. Nws yog qib "tswj hardness" (max 23 HRC), ua rau nws tsim nyog rau ib puag ncig uas me me ntawm H2S tej zaum yuav muaj nyob nrog
CO2 .
Kev txheeb xyuas ntawm Xim Band rau L80-9Cr
Raws li API 5CT, cov xim bands yog pleev xim rau ntawm cov yeeb nkab lub cev thiab cov couplings rau kev txheeb xyuas qhov chaw ceev.
| Qib / Hom | Band 1 | Band 2 | Band 3 | Band 4 |
| L80-9Cr | Liab | Xim av | Txiv kab ntxwv | Txiv kab ntxwv |
Txoj kev kho cua sov rau L80-9Cr kav
Kev kho cua sov yog qhov tseem ceeb rau kev ua kom cov qauv martensitic thiab 23 HRC hardness txwv.
| Txheej txheem | Txoj kev | Kev piav qhia |
| Austenitizing | Cua sov | Cov yeeb nkab yog rhuab mus rau 900℃-950℃los ua kom tiav austenite qauv. |
| Quenching | Kev txias txias | Accelerated txias (feem ntau yog roj los yog dej) hloov austenite rau hauv martensite. |
| Tempering | Rov ua dua | Reheated rau 650℃-750℃kom ua tiav lub hom phiaj 80,000 psi yield zog thiab xyuas kom muaj zog toughness. |
Chemical Composition thiab Mechanical Properties
Chemical Composition (Mass Fraction, %)
| Lub ntsiab | Cim | L80-9Cr Requirement |
| Cov pa roj carbon | C | Tsawg dua lossis sib npaug li 0.15% |
| Chromium | Cr | 8.00% – 10.00% |
| Molybdenum | Mo | 0.90% – 1.10% |
| Manganese | Mn | 0.30% – 0.60% |
| Silicon | Si | Tsawg dua los yog sib npaug li 0.50% |
| Phosphorus | P | Tsawg dua lossis sib npaug li 0.020% |
| Sulfur | S | Tsawg dua lossis sib npaug li 0.010% |
Mechanical Properties
| Khoom | Tus nqi (Imperial) | Tus nqi (Metric) |
| Yield zog | 80,000 - 95,000 psi | 552-655 MPa |
| Tensile zog (Min) | 95,000 psi | 655 MPa ua |
| Hardness (Max) | 23 HRC | 241 HWB |
| Elongation | Formula raws | ~ 15% yam tsawg kawg nkaus |
API 5CT L80-9Cr Casing Pipe Dimensions thiab Tolerances
Cov Dimensions
| OD (inch) | Qhov hnyav (lb / ft) | Phab ntsa Thickness (mm) | Txoj kab uas hla (mm) |
| 5-1/2" | 17.00 | 7.72 | 121.08 |
| 7" | 29.00 | 10.59 | 155.45 |
| 9-5/8" | 47.00 | 11.99 | 216.53 |
Tolerances
| Parameter | Ua siab ntev |
| Sab nraud Diameter (OD) | -0.75% rau +1.00% |
| Phab ntsa Thickness | -12.5%(Tsis muaj kev txwv zoo, txwv los ntawm qhov hnyav) |
| Qhov hnyav | -3.5% rau +6.5% (Ib leeg ntev) |
| Kev ncaj | < 0.2% of total length |
Kev sib txuas hom, xaus, thiab couplings
Xaus:Feem ntau Threaded thiab Coupled (T&C).
API Kev Sib Txuas:
STC (Short Round Xov):Cov ntawv thov txheem.
LTC (Long Round Xov):Zoo dua nro thiab foob.
BTC (Tebchaws)Txaus siab rau 9Cr vim zoo dua torque thiab load kuj.
Kev sib txuas hwm hwm:Feem ntau siv nrog 9Cr rauGas -Tightsealing hauv siab -cov pa roj qhov dej.
Couplings:Yuav tsum tau ua los ntawm cov khoom siv L80-9Cr thiab raug rau tib Q&T kev kho cua sov raws li cov yeeb nkab.
Cov yam ntxwv tseem ceeb
Intermediate Corrosion Resistance:Superior rau carbon steel hauv CO2ib puag ncig, txawm tias tsawg dua 13Cr.
Molybdenum Advantage:Qhov 1% Mo ntxiv muab qhov ua tau zoo dua rau pitting corrosion hauv chloride-muaj dej.
Siab -Tsub stability:Ua kom muaj kev ncaj ncees ntawm cov neeg kho tshuab ntawm qhov kub siab tshaj li cov qib carbon.
Tus nqi -zoo:Muab qhov "nruab nrab- av" tus nqi taw tes rau cov qhov dej uas xav tau ntau dua L80-1 tab sis tsis nruj me ntsis yuav tsum tau cov khoom kim heev 13Cr stainless hlau.
Kev tshuaj xyuas ntawm L80-9Cr Casing Pipe
Txhawm rau lav qhov kev ua tau zoo hauv ib puag ncig corrosive, kev tshuaj xyuas hauv qab no yog qhov yuav tsum tau ua:
Kev kuaj Hardness:100% ntawm cov pob qij txha raug kuaj kom paub tseeb tias lawv tsis dhau23 HRC(tiv thaiv SSC).
Hydrostatic Test:Txhua cov yeeb nkab raug kuaj los ntawm kev kub siab raws li 80% ntawm cov khoom muaj zog (feem ntau> 8,000 psi).
Tsis yog -Kev Tshawb Fawb Kev Ua Phem (NDE):
Ultrasonic (UT):Tshawb xyuas cov phab ntsa thickness thiab sab hauv tsis xws luag.
Magnetic Particle (MPI):Nthuav cov kab nrib pleb, tshwj xeeb tshaj yog nyob ib ncig ntawm cov xov.
Drift Test:Tus qauv mandrel yog dhau los ntawm cov yeeb nkab kom ntseeg tau tias cov cuab yeej tshem tawm.
Kev tshuaj xyuas qhov muag:Kev soj ntsuam nruj me ntsis rau qhov chaw pitting lossis khawb uas tuaj yeem pib corrosion.
GNEE API 5CT L80-9CR Casing Pipe Txheej Txheej Kab
GNEE API 5CT L80-9CR OCTG Yeeb Nkab Test Equipment
100% UT Inspected & Hydro- kuaj kom paub tseeb tias tsis muaj qhov tsis zoo.Nyem rau sab laj nrog peb Cov Txheej Txheem Tswjhwm Zoo rau 9Cr Alloys.
GNEE API 5CT L80-9CR Roj zoo casing yeeb nkab daim ntawv pov thawj
FAQ
Qhov txawv ntawm API 5CT L80-1, L80-9Cr thiab L80-13Cr yog dab tsi?
Qhov sib txawv ntawm peb qib no yog lawvChromium (Cr) cov ntsiab lus, uas txiav txim siab lawv qib ntawm corrosion kuj. Thaum lawv txhua tus sib koom tib lub zog tawm los (80,000 psi), lawv siv nyob rau hauv ib puag ncig sib txawv:
| Feature | L80-1 | L80-9Cr | L80-13Cr |
| Khoom siv | Tsawg-Alloy Carbon Steel | 9% Cr + 1% Mo Alloy | 13% Cr Stainless hlau |
| Lub hom phiaj Corrosive | Kev Pab Cuam (H2S) | Moderate CO2 | SiabCO2 (Ntsuab Gas) |
| Corrosion Resistance | Basic / Tsawg | Moderate (zoo pitting kuj) | Zoo heev (Zoo tshaj rau CO2 ) |
| Max Hardness | 23 HRC | 23 HRC | 23 HRC |
| Tus nqi txheeb ze | $ (Kev lag luam) | (Intermediate) | $ (Keeb) |
Puas yog L80 9Cr muaj raws li cov yeeb nkab welded?
Tsis muaj.
Raws li covAPI 5 CTspecification, L80-9Cr (thiab L80-13Cr) yuav tsum tau tsim raws liSeamless (SML)cev xwb.
Vuam tsis raug tso cai rau cov qib siab -chromium no vim tias nws nyuaj rau kev txhim kho corrosion tsis zoo thiab cov khoom siv hlau yuav tsum tau (tshwj xeeb yog 23 HRC hardness txwv) hauv thaj chaw vuam thiab cua sov- thaj chaw cuam tshuam (HAZ).
Dab tsi yog qib ntawm casing kav?
API 5CT casing qib tau muab faib ua plaub pawg:Pawg 1(J55/K55/N80) rau qhov dej ntiav dav dav,Pab pawg 2(L80/C90/T95) rau corrosive thiab qaub (H2S) kev pabcuam, thiabPawg 3 thiab 4(P110/Q125) rau siab -siab, ultra- daim ntaub ntawv sib sib zog nqus, ua kom zoo zog thiab corrosion kuj thoob plaws txhua qhov chaw drilling.
Cim npe nrov: L80-9cr roj casing, Tuam Tshoj l80-9cr roj casing manufacturers, lwm tus neeg, Hoobkas
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