Dab tsi yog API J55 EUE kav rau borewell system
May 25, 2026
API J55 EUE cov kav dejyog tus nqi siab heev-cov kev daws teeb meem zoo tubular tshwj xeeb tsim los rau lub tshuab nqus tsev, nrog rau cov dej tob, hauv qab dej kub, thiab qhov dej ntiav roj/gas. Kev siv lubJ55 steel qib, uas muab lub zog tawm los ntawm55,000-80,000 psi (379-552 MPa)thiab qhov tsawg kawg nkaus tensile lub zog ntawm75,000 psi (517 MPa), cov kav dej no tso siab tau rau kev tsim cov siab ntawm ntiav mus rau nruab nrab - qhov tob tob.
Kev txhaisEUE (Tshooj Sab Nraud Upset End)kev sib txuas nta lub thickened-kawg tsim uas ua kom lub zog sib koom ua ke ntau tshaj li ntawm cov yeeb nkab lub cev, tiv thaiv kev tsis sib xws lossis kev ua haujlwm tsis zoo nyob rau hauv qhov hnyav hnyav ntawm cov yeeb nkab ntev lossis cov twj submersible. Qhov no ua rau nws yog ib qho kev lag luam- kev xaiv tus qauv uas zoo kawg nkaus sib npaug kev lag luam tus nqi nrog tshwj xeeb tensile stability thiab sealing kev ua tau zoo.
J55 ID API xim code
J55 Tubing: Ib lub paj ntsuab ci ntsa iab, coupling ci ntsuab thiab tsis muaj bands.
API 5CT J55 Roj Tubing Chemical Composition
| Qib | C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
| API 5CT J55 | 0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.15 | 0.20 | 0.20 | / |
API 5CT J55 Oilfield Tubing Mechanical Property
| Qib Steel | Yield zog (Mpa) | Tensile zog (Mpa) | Tag nrho elongation nyob rau hauv load% |
| API 5CT J55 | 379-552 | Ntau dua lossis sib npaug li 517 | 0.5 |
API 5CT J55 Seamless Roj Yeeb Nkab Loj Daim Ntawv Qhia
| Sab nraud | Phab ntsa Thickness | Qhov hnyav | Qib | Xov | Ntev | |
| hauv | mm | kg/m | lb/ft | |||
| 4 1/2″ | 114.3 | 14.14-22.47 | 9.50-11.50 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 5″ | 127 | 17.11-35.86 | 11.50-24.10 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 5 1/2″ | 139.7 | 20.83-34.23 | 14.00-23.00 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 6 5/8″ | 168.28 | 29.76-35.72 | 20.00-24.00 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 7″ | 177.8 | 25.30-56.55 | 17.00-38.00 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 7 5/8″ | 193.68 | 35.72-63.69 | 24.00-42.80 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 8 5/8″ | 219.08 | 35.72-72.92 | 24.00-49.00 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 9 5/8″ | 244.48 | 48.07-86.91 | 32.30-58.40 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 10 3/4″ | 273.05 | 48.73-97.77 | 32.75-65.70 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 11 3/4″ | 298.45 | 62.50-89.29 | 42.00-60.00 | J55 | LTC/STC/BTC | R1/R2/R3 |
| 13 3/8″ | 339.72 | 71.43-107.15 | 48.00-72.00 | J55 | LTC/STC/BTC | R1/R2/R3 |
API 5CT J55 Roj Zoo Drilling Casing Pipe Tolerance
| Yam khoom | Kev kam rau siab | |
| Sab nraud txoj kab uas hla | Lub cev | D Tsawg dua lossis sib npaug 101.60mm ± 0.79mm |
| D Ntau dua lossis sib npaug rau 114.30mm+1.0% | ||
| -0.5% | ||
| Phab ntsa thickness | -12.5% | |
| Wight | Ib daim | +6.5%+3.5% |
| Tag nrho qhov hnyav | -1.75 | |
Kev sim thiab tshuaj xyuas ntawm API J55 EUE kav rau borewell system
Mechanical & Chemical Test (Material Integrity)
Cov kev ntsuam xyuas no tau lees paub tias qib steel J55 ua tau raws li cov qauv tsim qauv.
| Hom kev xeem | API 5CT Requirement | Lub hom phiaj |
| Tensile Test | Tawm tswv yim: 55-80 ksi; Tensile: Min 75 ksi | Xyuas kom cov yeeb nkab tuaj yeem txhawb nqa qhov hnyav ntawm lub twj tso kua mis thiab hlua. |
| Flattening Test | Yuav tsum tau rau ERW kav dej | Tshawb xyuas qhov zoo ntawm cov vuam seam kom paub tseeb tias nws yuav tsis tawg nyob rau hauv siab. |
| Tshuaj ntsuam xyuas | P Tsawg dua lossis sib npaug rau 0.030%, S Tsawg dua lossis sib npaug rau 0.030% | Txwv impurities los tiv thaiv brittleness thiab xyuas kom ntev -lub sij hawm durability. |
Dimensional soj ntsuam (geometry & haum)
Precise qhov ntev yog qhov tseem ceeb rau lub tshuab borewell kom ntseeg tau tias cov yeeb nkab haum rau qhov borehole thiab cov khoom siv.
| Cov khoom soj ntsuam | Txoj kev / Standard | Qhov tseem ceeb rau Borewells |
| OD & Phab ntsa Thickness | Calipers / Micrometers | Ua kom zoo sib xws thiab kev ua haujlwm siab. |
| Drift Test | Mandrel dhau los ntawm cov yeeb nkab | Tseem ceeb:Xyuas kom lub twj tso kua mis submersible lossis cov cuab yeej sab hauv tuaj yeem dhau los ntawm kev ywj pheej. |
| Kev soj ntsuam siab | Visual & Gauge check | Xyuas covEUE (Kev ntxhov siab sab nraud)thaj tsam rau kev sib hloov du thiab zoo thickness. |
| Kev ntsuas ntev | Ntau yam 1, 2, lossis 3 | Siv los xam qhov tseeb qhov tob ntawm lub twj tso kua mis. |
Tsis yog -Kev Ntsuas Kev Ntsuas & Kev Ntsuas Siab (Kev Tiv Thaiv Tsis Txaus)
Cov kev ntsuam xyuas no xyuas kom cov yeeb nkab yog "gas{0}} nruj" thiab "dej- nruj" yam tsis ua rau cov khoom puas.
| Hom kev xeem | Kev piav qhia | Lub hom phiaj |
| Hydrostatic Test | Txhua lub kav dej yog ntim nrog dej ntawm qhov siab | Yuav tsum tau. Xyuas kom tsis txhob muaj qhov xau hauv cov yeeb nkab lub cev lossis EUE txuas. |
| NDT (Ultrasonic / Eddy) | Ultrasonic (UT) los yog Sib Nqus Particle (MPI) | Txheeb xyuas qhov tsis zoo hauv lub cev lossis cov kab nrib pleb hauv qhov vuam / lub cev. |
| Kev tshuaj xyuas qhov muag | Surface check los ntawm cov kws tshuaj ntsuam xyuas | Tshawb xyuas qhov pits, gouges, lossis nplai uas tuaj yeem ua rau xeb hauv dej. |
Xov & Txuas Kev Tshuaj Xyuas (API 5B)
Txij li thaum EUE yog ib qho kev sib txuas ntawm threaded, kev ncaj ncees ntawm kev sib koom ua ke yog qhov tseem ceeb los tiv thaiv cov yeeb nkab hlua los ntawm kev poob rau hauv qhov dej.
| Yam khoom | Kev soj ntsuam ntxaws | Kev xav tau |
| Xov Gauging | Lead, Taper, thiab qhov siab | Xyuas kom cov EUE threads phim zoo kawg nkaus nrog cov coupling. |
| Standoff / Tes- nruj | Manual check ntawm thread engagement | Xyuas kom tseeb tias qhov kev sib txuas yuav ua tiav lub foob kom raug thaum torqued. |
| Xov Visual | Kev tshuaj xyuas rau burrs lossis torn threads | Tiv thaiv "galling" (stripping) thaum lub sij hawm installation ntawm qhov chaw zoo. |
GNEE API J55 EUE kav rau borewell system Hoobkas
GNEE API J55 EUE kav rau borewell system test equipments
GNEE API J55 EUE kav rau borewell system Certificate
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)
Cov tshuaj muaj pes tsawg leeg ntawm J55 yog dab tsi?
Raws li covAPI 5 CTspecification, tshuaj muaj pes tsawg leeg ntawmJ55Feem ntau tsom rau kev txwv cov impurities kom ntseeg tau tias weldability thiab durability. Nws yog ibcarbon{0}}manganese hlaunrog rau cov kev xav tau hauv qab no:
Phosphorus (P):Qhov siab tshaj plaws0.030%
Sulfur (S):Qhov siab tshaj plaws0.030%
Carbon (C), Manganese (Mn), thiab Silicon (Si):Tsis muaj kev txwv nruj nruj hauv cov lus API rau cov ntsiab lus no; lawv raug kho los ntawm cov chaw tsim khoom kom ntseeg tau tias cov yeeb nkab nce mus txog qhov yuav tsum tau muaj zog (55,000 psi tawm los).
J55 steel yog dab tsi?
j55 cevyog cov qib siab tshaj plaws thiab kev lag luam ntawm carbon steel siv rau casing thiab tubing hauv kev lag luam roj thiab roj, tswj hwm los ntawmAPI 5 CTtxheem.
