API 5CT Gr Q125 Casing Steel Yeeb Nkab
API 5CT Q125yog ib qho ultra-siab- lub zog casing steel qib tau teev tseg los ntawm American Petroleum Institute (API), categorized nyob rau hauvPab pawg 4ntawm API 5CT tus qauv. Nws yog tsim tshwj xeeb rau cov qhov dej sib sib zog nqus, ultra- qhov dej tob, thiab cov cheeb tsam nyuaj uas muaj kev kub ntxhov heev. Q125 yuav tsum tau ua kom tiav -ntev Quenched & Tempered (Q&T) kev kho cua sov kom ntseeg tau tias thaum nws muaj lub zog tawm los siab heev, nws kuj tseem tswj tau qhov tsim nyog toughness thiab vau tsis kam.
Sib tw Ultra-Deep Wells! Xaiv API 5CT Q125 ultra-siab lub zog casing los daws cov kev tsim muaj siab heev nrog yooj yim.Thov ib daim ntawv thov tswv yim tam sim no.
API 5CT Qib Q125 Casing & Tubing Xim Code
Hauv cov roj av, Q125 tau txheeb xyuas los ntawm cov kab txiv kab ntxwv ntawm cov yeeb nkab lub cev thiab cov couplings:
| Qib | Lub cev Band Xim | Coupling Xim |
| Q125 | 1 Txiv kab ntxwv | Painted Txiv kab ntxwv (tag nrho) |
API 5CT Q125 Mechanical Properties Table
Q125 muaj qee qhov kev ua kom muaj zog tshaj plaws hauv cov qauv API.
| Khoom | Kev xav tau |
| Yield zog | 862 - 1,034 MPa (125 - 150 tsi) |
| Tensile zog | Ntau dua lossis sib npaug rau 931 MPa (1 35 ksg) |
| Charpy V-ntsis cuam tshuam | Yuav tsum tau (min. zog xam raws li phab ntsa thickness) |
| Elongation | Muab xam raws li API qauv rau ib cheeb tsam |
Q125 Casing Chemical Composition (%)
Q125 siv nruab nrab- carbon alloy steel, nrog cov ntsiab lus xws li Chromium thiab Molybdenum ntxiv kom ntseeg tau lub zog siab tom qab kev kho cua sov.
| Element | C | Mn | P | S | Si | Cr | Mo |
| Cov ntsiab lus (%) | Tsawg dua los yog sib npaug li 0.35 | Tsawg dua lossis sib npaug li 1.35 | Tsawg dua lossis sib npaug li 0.020 | Tsawg dua lossis sib npaug li 0.010 | Tsawg dua lossis sib npaug li 0.45 | Feem ntau Alloyed | Feem ntau Alloyed |
Q125 Casing & Tubing Dimensions Daim Ntawv Qhia (Cov Loj Loj)
Vim tias Q125 yog siv rau siab - qhov tob tob, nws cov phab ntsa tuab feem ntau ntau dua li cov qib qis.
| Qeb | Hom OD (Inch) | OD (mm) | Qhov hnyav (lb / ft) |
| Tubing | 2 3/8", 2 7/8", 3 1/2", 4 1/2" | 60.32 - 114.30 | 4.60 - 15.10 |
| Casing | 4 1/2", 5 1/2", 7", 9 5/8", 13 3/8" | 114.30 - 339.72 | 11.60 - 72.00 |
API 5CT Q125 Tubing & Casing Tolerance Table
| Parameter | Tolerance Yuav Tsum Tau |
| Sab nraud Diameter (OD) |
Ntau dua lossis sib npaug 4.5 ": +1.00% / -0.50%; < 4.5": ± 0.79mm |
| Phab ntsa Thickness (WT) | Yam tsawg kawg nkaus87.5%ntawm nominal thickness (-12.5%) |
| Qhov hnyav | Ib qho kev sib koom ua ke: +6.5% / -3.5%; Load: -1.75% |
| Kev ncaj | Tag nrho qhov sib txawv Tsawg dua lossis sib npaug li 0.2% ntawm qhov ntev |
Test & Tshuaj xyuas ntawm API 5CT Q125 Casings & Tubing
Raws li qhov tseem ceeb heev - cov ntaub ntawv muaj zog, Q125 yuav tsum muaj cov txheej txheem sim nruj:
Tensile Test:Txhawm rau txheeb xyuas cov txiaj ntsig thiab lub zog tensile.
Charpy Impact Test:Ib qho yuav tsum tau ua kom ntseeg tau tias cov yeeb nkab tsis raug kev txom nyem los ntawm kev ntxhov siab heev.
Hydrostatic Test:Txhawm rau txheeb xyuas kev sib khi thiab kev ncaj ncees nyob rau hauv siab sab hauv.
Tag Nrho -ntev NDT (Tsis yog-Kev Ntsuas Kev Ua Phem):Yuav tsum suav nrog Ultrasonic (UT) lossis Magnetic Particle Inspection (MPI) txhawm rau txheeb xyuas cov kab nrib pleb.
Kev kuaj Hardness:Txhawm rau saib xyuas qhov sib xws ntawm kev kho cua sov zoo.
Drift Test:Txhawm rau kom ntseeg tau tias lub taub sab hauv yog qhov tseeb rau cov cuab yeej downhole.
NtaAPI 5CT Q125 Cov Lus Qhia:
Ultra{0}}High Yield Strength:Lub 125 ksi yield zog tso cai rau nws los tiv thaiv loj tensile loads.
Zoo heev Collapse Resistance:Lub siab -lub zog Q&T yeeb nkab lub cev yog tsim los tswj kev kub siab los ntawm kev sib sib zog nqus geological formations.
Stringent Toughness Requirements:Tsis zoo liP110, Q125 muaj cov kev cai nruj dua rau kev cuam tshuam toughness, muab kev nyab xeeb dua.
Consistent Microstructure:Advanced alloying ua kom cov neeg kho tshuab zoo sib xws thoob plaws hauv cov yeeb nkab.
Daim ntawv thovAPI 5CT Q125 Cov Lus Qhia:
Ultra-Deep Wells:Siv nyob rau hauv qhov dej siab tshaj 6,000 meters qhov twg geological pressures yog heev.
High-Pressure Gas Wells:Siv los ua ntau lawm casing los lis immense internal burst pressures.
Extended Reach / Slanted Wells:Siv nyob rau hauv complex trajectory qhov dej los ris lub luj ntawm txoj hlua thiab siab tensile rog.
Ceeb toom tseem ceeb:Q125 feem ntau yogTSIS pom zoorau ib puag ncig nrog siab concentration ntawm Hydrogen Sulfide (H2S). Vim nws qhov tawv tawv heev, nws muaj kev cuam tshuam rau Sulfide Stress Cracking (SSC) hauv qhov chaw qaub. Yog tias H2S tam sim no, yuav tsum tau txo qis rau C110 lossis T95.
API 5CT Q125 Oilfield Casing Pipes Test thiab tshuaj xyuas
API 5CT Q125 Roj Zoo Drilling Tube Hoobkas
FAQ
API 5CT yog dab tsi?
API 5 CTyog lub thoob ntiaj teb specification tsim los ntawm American Petroleum lub koom haum rau casing thiab tubing siv nyob rau hauv cov roj thiab roj extraction, standardizing tag nrho cov kev xav tau kev pab xws li tshuaj muaj pes tsawg leeg, mechanical zog, manufacturing txheej txheem, dimensional tolerances, thiab soj ntsuam txoj kev (xws li hydrostatic thiab tsis -kev kuaj kev puas tsuaj). Encompassing ntau yam steel qib los ntawm J55 rau Q125, nws ua hauj lwm raws li lub hauv paus kev lag luam benchmark los xyuas kom meej kev nyab xeeb, efficiency, thiab interchangeability ntawm downhole tubulars nyob rau hauv lub ntiaj teb no drilling thiab ntau lawm cov hauj lwm.
Dab tsi yog phab ntsa thickness kam rau ua API 5CT
Phab ntsa thickness kam rau ua API 5CT yog-12.5%. Qhov no txhais tau tias cov phab ntsa tiag tiag ntawm txhua qhov chaw yuav tsum yog tsawg kawg87.5%ntawm nominal thickness. Tsis muaj kev txwv siab tshaj plaws rau phab ntsa thickness, raws li nws yog indirectly tswj los ntawm qhov hnyav kam rau ua.
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