Dab tsi yog qhov txawv ntawm J55 thiab L80 OCTG
Mar 30, 2026
J55 thiab 80 yog ob qib sib txawv ntawm cov roj casing hlau raws li API 5CT tus qauv. Qhov sib txawv tseem ceeb nyob hauv lawv cov khoom siv kho tshuab, kev tiv thaiv corrosion, thiab siv tau rau kev ua haujlwm: L80 muaj zog dua thiab muaj zog tiv thaiv corrosion, thiab tsim nyog rau qhov dej tob thiab corrosive ib puag ncig; J55 yog cov qib steel uas muaj nqi qis, thiab tsim nyog rau cov qhov dej ntiav thiab cov qauv geological.
Txawm hais tias koj xav tau J55 Tus Nqi -Kev Ua Haujlwm Zoo lossis L80 Kev Ua Haujlwm Siab-Nyem qhov no rau Kev Tshawb Fawb Kev Tshawb Fawb thiab Kev Tshaj Tawm hauv 1 Teev.
J55 thiab L80 OCTG Sib piv
| Cov khoom sib piv | J55 (Pab 1) | L80 (Tib 1) |
| Qhov chaw | Pas / Economical | Tswj Cov Yield / Sour Service Qib |
| Xim Code | Ib Leeg Ntsuab Band | Ib Red + Ib Brown Band |
| Corrosion Resistance | Tsis muaj kev tiv thaiv tshwj xeeb | Sulfide Stress Cracking (SSC) Resistant |
| Hom kev siv | Cov qhov dej ntiav, tsis yog- ib puag ncig qaub | Nruab nrab- qhov dej tob,qaub (
H2SH2S ) ib puag ncig |
J55 thiab L80 Casing thiab Tubing Mechanical Properties Sib piv
| Parameter | J55 | L80 (Tib 1) |
| Yield zog | 379 - 552 MPa (55 - 80 ksi) | 552 - 655 MPa (80 - 95 ksi) |
| Tensile zog | Ntau dua lossis sib npaug rau 517 MPa (75 ksi) | Ntau dua lossis sib npaug rau 655 MPa (95 ksi) |
| Hardness txwv | Tsis xav tau | Tsawg dua lossis sib npaug rau 23 HRC (Yuav Tsum Tau Txwv) |
| Hardness Variation | Tsis xav tau | Kev tswj nruj nruj (variation hauv ib lub yeeb nkab) |
| Min. Elongation | qis | Siab dua (zoo dua ductility) |
J55 thiab L80 Oilfield Casing Chemical Composition Comparison
| Khoom (%) | J55 | L80 (Tib 1) |
| Cov pa roj carbon (C) | Kev txiav txim siab ntawm tus neeg tsim khoom | Tsawg dua lossis sib npaug li 0.43 |
| Manganese (Mn) | Kev txiav txim siab ntawm tus neeg tsim khoom | Tsawg dua lossis sib npaug li 1.90 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.030 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug rau 0.010 (Stricter dua J55) |
| Chromium (Cr) | Tsis xav tau | Feem ntau ntxiv (nrog Mo) los txhim kho kev ua haujlwm |
J55 VS L80 Oilfield Casing Pipes Manufacturing & Thaum tshav kub kub kho
| Yam khoom | J55 | L80 |
| Kev kho cua sov | Raws li -rolled, Normalized (N), los yog N&T | Yuav Tsum Quenched & Tempered (Q&T) |
| Kev tsim khoom | Seamless (S) lossis Electric Welded (EW) | Seamless (S) lossis Electric Welded (EW) |
| Loj Loj | Tsis xav tau | Yuav tsum yog Fine Grain (Grain size Loj dua lossis sib npaug li 5) |
| Hydrostatic Test | Yuav tsum tau | Yuav tsum tau |
J55 thiab L80 Roj Zoo Drilling Casing Pipe Charpy V-notch Impact Test
| Qib | Yuav tsum muaj kev cuam tshuam |
| J55 | Feem ntau tsis tas yuav tsum tau (tshwj tsis yog thov los ntawm tus neeg yuav khoom). |
| L80 | Yuav tsum tau ua. Kev ntsuam xyuas cuam tshuam yuav tsum tau ua ntawm qhov ntsuas kub kom ntseeg tau tias cov khoom yuav tsis raug puas tsuaj los ntawm kev nyuaj siab. |
Qhov twg xaiv?
| Scenario | Pom zoo xaiv | Yog vim li cas |
| Conventional Shallow Onshore Wells (No
H2SH2S ) |
J55 | Tus nqi qis heev; txaus rau 55ksi lub zog xav tau. |
| Kev Pab Cuam (
H2SH2S ) Ib puag ncig |
L80 | J55 yuav ua tsis tau sai ntawm cov pob txha tawg hauv cov qhov dej qaub. L80 yog Q&T kho thiab hardness - tswj los tiv thaiv SSC. |
| Qhov tob ntawm 2,000-3,000 meters | L80 | L80 lub zog siab dua (80ksi) ua rau tus kheej loj dua - qhov hnyav thiab qhov hnyav dua li J55. |
| Txias Regions / Offshore Projects | L80 | L80 qhov cuam tshuam toughness thiab Q&T cov txheej txheem tsim khoom muaj kev ntseeg tau ntau dua. |
GNEE API 5CT OCTG Hoobkas
Nrhiav rau L80 Sour Service Casing? Xa Specs rau Hnub KawgQuote & Ntiaj teb no Logistics. J55 Kuj muaj nyob rau hauv Tshuag.
FAQ
L80 casing yog dab tsi?
L80 Casing yogntsia rau hauv cov roj qhov dej downhole los muab cov qauv kev ncaj ncees rau lub qhov dej thiab dais sab nraud -poob siab los ntawm cov pob zeb tsim thiab sab hauv- tawm los ntawm cov kua thiab roj.
J55 khoom yog dab tsi?
API 5CT Grade J55 carbon hlauseamless tubings feem ntau yog siv rau hauv cov roj drilling, tshwj xeeb tshaj yog rau cov roj qhov dej ntiav, qhov dej kub hauv qhov dej, thiab cov dej hauv dej. Hom hlau no yog tus nqi qis-, ua rau nws yog qhov kev xaiv nrov rau cov haujlwm uas tsis xav tau cov ntaub ntawv hnyav -.
L80 cov khoom sib npaug yog dab tsi?
TIAB SA 4140
L80 (API 5CT) yog nruab nrab carbon steel thiab sib npaug rauTIAB SA 4140. Peb muab L80 Casing Pipe uas ua los ntawm peb cov khoom xws li L80-1, L80 9Cr thiab L80 13Cr. Cov ntaub ntawv no muaj cov yam ntxwv zoo ib yam tab sis muaj kev kho cua sov sib txawv thiab cov tshuaj muaj pes tsawg leeg.
