API 5 CTJ55 thiabK55yog cov qib steel zoo sib xws feem ntau hu ua "cov kwv tij" hauv kev lag luam roj thiab roj. Lawv sib koom tib lub zog tawm los, tab sis qhov sib txawv tseem ceeb nyob hauv lawvtensile zog.
Xim Code Identification
Cov neeg ua haujlwm hauv cheeb tsam paub qhov txawv ntawm ob qib no los ntawm cov xim bands pleev xim rau ntawm lub cev yeeb nkab:
J55: Ib tug Bright Green band.
K55: Ob lub Bright Green bands.
Mechanical Properties (Qhov txawv tseem ceeb)
Thaum ob qib muaj tib lub zog tawm los (lub ntsiab lus uas cov hlau pib deform), K55 yog tsim los kom muaj lub zog tensile siab dua (qhov taw tes uas cov hlau ua tau tawg).
| Khoom | J55 | K55 |
| Min. Yield zog | 55,000 psi (379 MPa) | 55,000 psi (379 MPa) |
| Max. Yield zog | 80,000 psi (552 MPa) | 80,000 psi (552 MPa) |
| Min. Tensile zog |
Ntau tshaj los yog sib npaug rau Greater dua los yog sib npaug 75,000 psi (517 MPa) |
Ntau tshaj los yog sib npaug rau Greater dua los yog sib npaug 95,000 psi (655 MPa) |
API 5CT J55 & K55 Chemical Composition Table (%)
| Qib | Cov pa roj carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) |
| J55 | Tsis Qhia * | Tsis Qhia * | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.030 | Tsis Qhia * |
| K55 | Tsis Qhia * | Tsis Qhia * | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.030 | Tsis Qhia * |
Daim ntawv thov sib txawv
J55:Feem ntau siv rauTubing(cov hlua ntau lawm) thiab ntiavCasing. Nws yog qhov kev xaiv pheej yig tshaj plaws rau cov qhov dej uas siab tensile loads tsis muaj kev txhawj xeeb.
K55:Feem ntau siv rauCasing. Vim tias nws lub zog tensile siab dua (95 ksi), nws yog qhov zoo dua los tiv thaiv qhov hnyav ntawm cov hlua ntev ntev dai rau hauv qhov dej. Nws kuj muaj me ntsis zoo dua tawg tsis kam tshaj J55.
Engineering xaiv Matrix
| Kev txiav txim Dimension | Qib J55 | Qib K55 | Kev xaiv tswv yim |
| Daim Ntawv Qhia Yam Khoom Tseem Ceeb | tsom rauTubing | tsom rauCasing | Xaiv J55 rau tubing; muab qhov tseem ceeb K55 rau casing. |
| Tensile Load Capacity | qis ( Ntau tshaj los yog sib npaug rau Greater dua los yog sib npaug 75 hli) |
Siab dua ( Ntau tshaj los yog sib npaug rau Greater dua los yog sib npaug 95 hli) |
XaivK55rau cov qhov tob tob nrog txoj hlua hnyav. |
| Internal Pressure (Tebchaws) | Tsawg tsis kam | Kev tiv thaiv siab dua | Ua ntejK55rau ntu uas muaj kev pheej hmoo siab sab hauv. |
| Collapse Resistance | Qib theem | Qib theem | Zoo sib xws rau ob qho tib si, tab sis K55 yog qhov ruaj khov dua vim muaj zog tensile ntau dua. |
| Tus nqi yuav khoom | Tsawg tshaj (Pib Nqe) | me ntsis siab dua J55 | XaivJ55rau qhov dej ntiav heev kom ua kom ROI ntau tshaj. |
Environmental Suitability
| Environmental Factor | Kev xaiv: J55 | Kev xaiv: K55 |
|
H2SH2S (Siab Service) |
TSEEM CEEB(Risk ntawm brittle failure) | TSEEM CEEB(Risk ntawm brittle failure) |
|
CO2 CO2 (Sweet Service) |
Txwv rau me me CO2 CO2 nkaus xwb |
Txwv rau me me CO2 CO2 nkaus xwb |
| Ambient Kub | Ib txwm ambient tej yam kev mob | Ib txwm ambient (K55 muaj zog dua me ntsis) |
| Corrosion Risk | Tsis yog -corrosive "Sweet" qhov dej nkaus xwb | Tsis yog -corrosive "Sweet" qhov dej nkaus xwb |
Daim Ntawv Qhia Tshwj Xeeb
| Daim ntawv thov Scenario | Pom zoo Qib | Kev xav |
| Nyiag Ntau Lawm Kab | J55 (Tubing) | Ntau lawm tubing bears tsawg load; J55 yog qhov kev xaiv pheej yig tshaj plaws. |
| Nto Casing | K55 (Casing) | Nto casing yuav tsum txhawb nqa txoj hlua hnyav ntxiv; K55 muaj kev ruaj ntseg tensile ntau dua. |
| Intermediate Technical Casing | K55 | Qhov tob ntxiv ntxiv txoj hlua hnyav; K55's 95 ksi tensile lub zog muaj kev nyab xeeb dua. |
| Dej Dej / Dej Dej | J55 | Tsuav tsis muaj roj acidic tam sim no, J55 muab lub zog txaus ntawm tus nqi qis. |
| Coal txaj Methane (CBM) | J55 | CBM qhov dej feem ntau yog ntiav; J55 txo qis kev siv peev thawj zaug. |
API 5CT OCTG Test thiab tshuaj xyuas
API 5CT Casing Pipe Hoobkas
FAQ
J55 yog dab tsi
API 5CT J55yog qhov siv dav tshaj plaws thiab tus nqi -kev nkag tau zoo- qib casing thiab qib tubing hauv kev lag luam roj thiab roj, uas muaj qhov tsawg kawg nkaus tawm lub zog ntawm 55,000 psi thiab feem ntau yog tsim los ntawm kev ua - dov los yog cov txheej txheem normalized. Nws yog tsim los rau cov qhov dej ntiav ntiav uas tsis tshua muaj siab nyob rau hauv cov pa "qab zib" ib puag ncig, feem ntau ua haujlwm raws li cov tubing ntau lawm los yog qhov chaw ua haujlwm; Txawm li cas los xij, vim tias nws tsis muaj kev tiv thaiv rau Hydrogen Sulfide (H2S) corrosion, nws siv nyob rau hauv ib puag ncig qaub yog nruj me ntsis txwv.
K55 khoom yog dab tsi?
API 5CT K55yog qhov nruab nrab -rau- tsis tshua muaj zog oilfield casing qib nrog lub zog tawm los zoo ib yam rau J55 (55,000 psi) tab sis ntau duaLub zog tensile kawg (tsawg kawg 95,000 psi), tso cai rau nws zoo dua txhawb nqa qhov hnyav ntawm cov yeeb nkab ntev. Feem ntau tsim los ntawm - dov los yog cov txheej txheem normalized, nws feem ntau yog siv rau kev ua haujlwm hauv qhov ntiav - mus rau - qhov nruab nrab qhov tob nruab nrab cov roj thiab cov qhov dej, ua tus nqi siab heev - kev xaiv tus qauv zoo rau kev tsim cov casing. Vim nws tsis muaj kev pabcuam qaub, nws tsuas yog tsim rau "qab zib" ib puag ncig uas tsis muaj Hydrogen Sulfide (H.2S ).
