Thawj qhov sib txawv ntawmJ55thiabL80tubing nyob rau hauv lawv lub zog txhua yam thiab ib puag ncig tsim nyog:J55yog ib qho kev lag luam, dav dav - hom phiaj qib nrog qhov tsawg kawg nkaus tawm lub zog ntawm 55,000 psi tsim los rau "qab zib" (tsis yog- corrosive) qhov dej, whereasL80yog qib siab dua - qib zog (80,000 psi min yield) uas tau txais kev tshwj xeeb quenching thiab tempering kom muaj qhov siab tshaj plaws ntawm 23 HRC, ua rau nws qhov tseem ceeb rau "qaub" qhov chaw pabcuam uas muaj Hydrogen Sulfide (H2S) txhawm rau tiv thaiv kev nyuaj siab tawg.
Tau Txais Tus Nqi Tam Sim No rau API 5CT J55 & L80 Tubing - Thov Koj Tso Cai Hnub No!
J55 yog ib qho tseem ceeb tshaj plaws thiab siv dav hauv qib tubing hauv qabAPI 5 CTspecification.
Qhov chaw:A "general{0}}lub hom phiaj," qis- zog steel qib.
Nta:Tus nqi siab -zoo nrog kev ua haujlwm zoo thiab kev ua haujlwm zoo.
Ib puag ncig siv tau:Feem ntau siv hauv"Sweet Wells"(dawb lossis nruab nrab qhov tob) qhov twg Hydrogen Sulfide (H2S) yog tsis tuaj los yog ib puag ncig yog corrosive tsawg.
Kev kho cua sov:API cov lus qhia tshwj xeeb tsis tso cai rau kev kho cua sov tshwj xeeb rau J55; nws yog feem ntau normalized los yog muab nyob rau hauv lub xeev "as-rolled".
L80 belongs rau "Group 2" ntawm API 5CT specification (Tshwj xeeb Yield Strength qib) thiab yog tsim tshwj xeeb rau cov kev pabcuam qaub.
Qhov chaw:Qhov nruab nrab - mus rau - siab zog steel nrog nruj tswj nruj.
Nta:Muaj kev tiv thaiv zoo heev rauSulfide Stress Cracking (SSC).
Ib puag ncig siv tau:Siv hauv"Sour Wells"muaj H2S, raws li zoo raws li nyob rau hauv qhov sib sib zog nqus qhov dej nrog siab siab.
Sub- pawg:
L80-1:Txheem carbon steel (feem ntau).
L80-9Cr / L80-13Cr:Muaj Chromium, tshwj xeeb yog siv rau ib puag ncig nrog cov pa roj carbon dioxide hnyav (CO2) corrosion.
Kev kho cua sov:Yuav tsum tau txaisQuenching thiab Tempering (Q & T)los xyuas kom meej ib tug uniform thiab ruaj khov microstructure.
Cov lus sib piv: J55 vs. L80 Parameters
Cov lus hauv qab no qhia txog qhov sib txawv ntawm cov khoom siv kho tshuab, tshuaj lom neeg, thiab kev siv:
| Parameter | j55 cev | L80 (Hom 1) Tubing |
| API Group | Pawg 1 (Lub Hom Phiaj) | Pab Pawg 2 (Tshwj xeeb tshaj tawm) |
| Yield zog (Min) | 55,000 psi (379 MPa) | 80,000 psi (552 MPa) |
| Yield zog (Max) | 80,000 psi (552 MPa) | 95,000 psi (655 MPa) |
| Tensile zog (Min) | 75,000 psi (517 MPa) | 95,000 psi (655 MPa) |
| Yuav tsum tau Hardness | Tsis muaj kev txwv siab tshaj plaws | Max Hardness Tsawg dua los yog sib npaug rau 23 HRC(tseem ceeb) |
| Elongation | High (zoo ductility) | Nruab nrab |
| Kev kho cua sov | Tsis tas yuav tsum tau ua | Yuav tsum tau quenched & Tempered (Q&T) |
|
H2SH2S Kev tiv thaiv |
Tsis resistant (Nyob rau hydrogen embrittlement) | Resistant (Sour Service) |
| API Xim Code | Ib Leeg Ntsuab Band | Ib Band |
| Daim ntawv thov tseem ceeb | Cov qhov dej ntiav, tsis yog -corrosive | Qhov dej tob, siab siab, qaub roj |
| Tus nqi txheeb ze | qis (Economical) | Siab dua (Cov nqi ntau lawm) |
J55 vs. L80 Tubing Xaiv Kev Txiav Txim Matrix
| Txoj Cai Xaiv | Field Condition Description | Pom zoo Qib | Tswv yim & tswv yim |
| Hydrogen sulfide (H2S ) | MuajH2S (Ib nrab siab> 0.05 psi) |
L80 (Tib 1) |
H2S ua rau hydrogen embrittlement thiab Sulfide Stress Cracking (SSC). L80's txwv hardness (tsawg dua los yog sib npaug rau 23 HRC) yog qhov nkag - qib kev xaiv rau kev pabcuam qaub.J55 raug txwv nruj heev. |
| Cov pa roj carbon dioxide (CO2 ) | SiabCO2 cov ntsiab lus(Ib nrab siab> 30 psi) |
L80 (9Cr/13Cr) | Tsis yog J55 lossis tus qauv L80-1 tiv taus CO2corrosion. Yog CO2 hnyav heev, siv Chromium-alloyed L80 variants (piv txwv li, 13Cr). |
| Qhov tob (Tensile) | Qhov dej ntiav / nruab nrab (< 2,500m) | J55 | J55 muaj lub zog qis zog tab sis txaus los txhawb nws tus kheej txoj hlua hnyav hauv qhov dej ntiav. |
| Deep / Ultra{0}}Deep Wells (> 3,000m) | L80 | L80 lub zog muaj zog ntau dua (80 ksi) tuaj yeem txhawb nqa txoj hlua hnyav dua thiab siab dua tensile loads. | |
| Wellhead/Formation Pressure | Tsawg-Pressure Wells | J55 | Rau qis- ib puag ncig kev ntxhov siab, J55 qhov kev ntsuas tawg thiab tawg yog feem ntau txaus thiab tus nqi ntau dua - zoo. |
| Nruab nrab mus rau siab -Pressure Wells | L80 | L80 muab lub zog sab hauv (Burst) thiab sab nraud siab (Collapse) tsis kam vim nws cov khoom siv zog. | |
| Kub | Ambient / Nruab Nrab Temp | J55 | Tsis muaj kev txwv kub tshwj xeeb. |
| High -Tsub Dej | L80 | Vim tias L80 yog quenched & Tempered, nws cov khoom siv kho tshuab nyob ruaj khov dua ntawm qhov kub thiab txias piv rau J55. | |
| Economics / Nyiaj txiag | Cov peev nyiaj-sensitive / Temporary Wells | J55 | J55 yog qib qis tshaj plaws steel qib hauv API 5CT specification. |
| Ntev-lub sij hawm / siab-Cov dej ntau lawm | L80 | Xav txog tus nqi ntawm lub neej (txo cov nqi ua haujlwm los ntawm corrosion / tawg), L80 yog qhov kev xaiv ntau dua. |
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FAQ
Lub zog tawm los ntawm J55 tubing yog dab tsi?
Lub zog tawm los ntawmJ55tubing yog:
Yam tsawg kawg nkaus:55,000 psi (379 MPa)
Qhov siab tshaj plaws:80,000 psi (552 MPa)
L80 tubing yog dab tsi?
l80 cevyog ib qho nruab nrab - zog, tswj- hardness steel yeeb nkab siv nyob rau hauv cov roj thiab roj qhov dej.
