API 5CT T95 Oilfield Casing Pipes

API 5CT T95yog lub siab -lub zog,txwv - tawm loscasing qib tshwj xeeb engineered rauKev pab cuam (H₂S). Nws belongs rau Pawg 2 ntawm API 5CT specification.

T95 yog qhov tseem ceeb dua -lub zog version ntawmC90. Nws muab qhov tsawg kawg nkaus yield zog ntawm95,000 psithaum tuav zoo heev tsis kam musSulfide Stress Cracking (SSC). Qhov no yog ua tiav los ntawm kev nplua -grained, tag nrho tempered martensitic microstructure. Vim tias nws muaj peev xwm tswj tau qhov nro thiab qhov hnyav dua li L80 tab sis tseem tiv taus hydrogen embrittlement, T95 yog tus qauv xaiv rau qhov sib sib zog nqus, siab - qhov dej siab muaj H₂S.

Puas yog koj qhov project xav tau 100% NACE MR0175 Ua raws? Tso koj Cov Lus Qhia rau T95 Daim Ntawv Pov Thawj thiab MTCs.

 

API 5CT Qib T95 Casing Hlau yeeb nkab Xim Code

API siv cov xim tshwj xeeb los txheeb xyuas T95 hauv daim teb:

Lub cev lub cev: Ib Band Nyiaj + Ib Band Dawb.

Couplings:Tag nrho cov coupling yog pleev xim rauNyiajnrog aDawbkab txaij.

 

API 5CT T95 Casing Specification Table

Parameter	Specification
Txuj	API Spec 5CT (Tswj tsab)
Pab pawg / Qib	Pawg 2 / T95
Hom kev tsim khoom	Seamless (SML) nkaus xwb
Kev kho cua sov	Quenched & Tempered (Q&T)
Kev Pabcuam Ib puag ncig	Kev pab cuam (H2S Environments)
Khoom Specification Level	PSL-1, PSL-2, PSL-3

 

API 5CT T95 Roj Zoo casing yeeb nkab Chemical Composition thiab Tensile & Hardness Requirement

Txhawm rau kom ntseeg tau tias SSC tsis kam, T95 siv Chromium-Molybdenum (Cr-Mo) alloy nrog qib impurity tsawg heev.

Chemical Composition (Mass Fraction, %)

Element	Cim	Kev xav tau
Cov pa roj carbon	C	0.25% – 0.35%
Chromium	Cr	0.40% – 1.50%
Molybdenum	Mo	0.25% – 0.85%
Sulfur	S	Tsawg dua lossis sib npaug li 0.005%(Tshwj xeeb nruj)
Phosphorus	P	Tsawg dua lossis sib npaug li 0.020%
Silicon	Si	Tsawg dua lossis sib npaug li 0.35%

Mechanical Properties (Cov ntaub ntawv-Tsav)

Khoom	Tus nqi (Imperial)	Tus nqi (Metric)
Yield zog	95,000-110,000 psi	655-758 MPa
Tensile zog (Min)	105,000 psi	724 MPa ua
Max Hardness	25.4 TSI	255 HWB
Yield/Tensile Ratio	Tsawg dua lossis sib npaug li 0.93	Tsawg dua lossis sib npaug li 0.93

 

T95 Casing Dimensions Table (Qhov ntau thiab tsawg)

OD (inch)	Qhov hnyav (lb / ft)	Phab ntsa Thickness (mm)	Sab hauv Dia (mm)	Txoj kab uas hla (mm)
5"	18.00	9.19	108.62	105.45
5-1/2"	20.00	9.17	121.36	118.19
7"	29.00	10.59	156.62	152.65
7"	32.00	11.51	154.78	150.81
9-5/8"	47.00	11.99	220.50	216.53
9-5/8"	53.50	13.84	216.80	212.83

 

API 5CT T95 casing yeeb nkab Tolerance Table

Parameter	Ua siab ntev
Sab nraud txoj kab uas hla (OD)	-0.75% rau +1.00%
Phab ntsa Thickness	-12.5%(Muaj phab ntsa)
Qhov hnyav	-3.5% rau +6.5% (Ib leeg ntev)
Kev ncaj	Max 0.2% ntawm tag nrho qhov ntev
Ovality	Max 1% ntawm OD

 

Kev sib txuas thiab kawg hom API 5CT T95 Casing

Xaus:Feem ntauThreaded thiab Coupled (T&C).

Standard API Xov:

BTC (Tebchaws)Txaus siab rau T95 vim muaj peev xwm nruj hauv qhov dej tob.

LTC (Long Round Xov):Feem ntau rau cov txheej txheem ntau lawm qhov tob.

Kev sib txuas hwm hwm:Feem ntau siv rau T95 los xyuas kom meejgas- nruj sealinghauv siab -cov qhov dej siab (piv txwv li, VAM, TenarisHydril).

Couplings:Yuav tsum tau ua los ntawm cov khoom siv qib T95 thiab quenched & Tempered.

Qhov tseem ceeb rau High-Pressure Gas Wells! Tau txais T95 Daim Ntawv Pom Zoo nrog Kev Sib Txuas Tshwj Xeeb rau Zero-Txoj Kev Ua Tau Zoo.

 

API 5CT T95 Casing Features

High Strength Sour Service:Txuas qhov sib txawv ntawm L80 thiab C110; ua haujlwm siab dua L80 thaum tseem muaj kev nyab xeeb los ntawm H₂S.

Restricted Yield Window:Qhov nqaim 15,000 psi yield ntau kom ntseeg tau cov khoom siv sib xws.

Hardenability:Cov ntsiab lus siab Cr thiab Mo ua kom muaj 100% martensitic qauv thoob plaws hauv phab ntsa tuab.

Zoo heev Toughness:Kev ntsuam xyuas qhov yuav tsum tau ua kom ntseeg tau tias cov yeeb nkab yuav tsis poob thaum poob siab.

 

Kev soj ntsuam yuav tsum tau ua rau T95 OCTG kav

Mechanical Property Requirements

Chemical Composition Control

SSC Resistance Test (NACE TM0177):

Yuav tsum dhau qhov kev ntsuam xyuas hydrogen sulfide kev ntxhov siab corrosion tawg, simulating ib puag ncig acidic (H₂S ib nrab siab siab dua lossis sib npaug rau 0.05 psi).

Cov qauv no suav hais tias tsim nyog yog tias nws tsis pom muaj kab nrib pleb tom qab raug kev ntxhov siab (feem ntau 75% yield zog) rau 720 teev.

NDT Requirements:

Tag nrho cov T95 yeeb nkab lub cev yuav tsum tau ua tiav kev kuaj ultrasonic (UT) thiab sib nqus particle kuaj (MT).

Couplings thiab accessories yuav tsum tau undergo 100% ultrasonic los yog radiographic kuaj kom paub tseeb tias sab hauv yog controllable.

Hydrostatic Test:

Txhua lub yeeb nkab yuav tsum tau kuaj xyuas hydrostatic. Kev ntsuas siab yuav tsum tsis pub tsawg tshaj 90% ntawm nws cov ntsuas hauv siab, thiab lub sij hawm tuav lub siab yuav tsum tsis pub tsawg tshaj 5 vib nas this, tsis muaj to.

Dimensional thiab Surface Accuracy:

Sab nraud txoj kab uas hla thiab phab ntsa thickness tolerances yuav tsum ua raws li API 5CT specifications (xws li, txheej kab sib txawv ± 0.75%, phab ntsa thickness sib txawv -12.5% ​​​​rau +15%).

Qhov saum npoo yuav tsum tsis muaj qhov tsis xws luag uas cuam tshuam rau kev siv, xws li tawg, folds, thiab nplai. Yog tias tsim nyog, tiv thaiv - cov cim corrosion tuaj yeem siv los ntawm kev pleev xim.

Re-Txoj cai tshuaj xyuas thiab rov ua dua:

Yog tias cov qauv thawj zaug tsis tsim nyog, tag nrho cov kav dej yuav raug tshuaj xyuas ib tus zuj zus, thiab cov khoom tsis tsim nyog yuav raug muab pov tseg.

Cov khoom siv tsis tsim nyog yuav raug rov-kub- kho thiab rov- tshuaj xyuas raws li cov khoom tshiab, tab sis rov- qauv thiab kuaj yuav tsum tau ua.

 

GNEE API 5CT T95 Casing yeeb nkab txheej txheem kab

 

GNEE API 5CT T95 Oil Well Casing Pipe Test Equipments

 

GNEE API 5CT T95 Casing Pipe Certificate

 

FAQ

Qhov txawv ntawm API 5CT thiab API 5L yog dab tsi?

Thawj qhov sib txawv ntawmAPI 5 CTthiabAPI 5Lyog lawv daim ntawv thov thiab hom kev ntxhov siab lawv tau tsim los daws:

Daim ntawv thov (Downholes vs. Nto):

API 5CT:Siv rauNce tojkev ua haujlwm. Cov no yogOCTG(Cov Roj Lub Tebchaws Tubular Khoom) zoo li Casing thiab Tubing uas musnyob rau hauv lub qhov dej.

API 5L:Siv rauNruab nrabkev ua haujlwm. Cov no yogKab Yeebsiv rauthaujroj, roj, los yog dej los ntawm lub qhov dej mus rau refineries los yog cia tanks.

Tsim qhov tseem ceeb:

API 5CT:Tsom ntsoov rau kev tawm tsamsab nraud siab (collapse), tensile kev nyuaj siab(qhov hnyav ntawm cov hlua khi hlua), thiab tshwj xeeb corrosive ib puag ncig (H₂S/CO₂ ).

API 5L:tsom rausab hauv siab, flow peev, thiabweldabilityrau kev koom nrog cov yeeb nkab ntev.

Xaus kev sib txuas:

API 5CT:Yuav luag ib txwmThreaded thiab Coupled(STC, LTC, BTC, lossis hwm kev sib txuas) vim tias lawv yuav tsum tau screwed ua ke rau hauv pem teb rig.

API 5L:Yuav luag ib txwmBeveled rau vuamyog li lawv tuaj yeem welded ua ke nyob rau hauv lub tshav pob los tsim ib tug nruam pipeline.

 

API 5CT txhais li cas?

API 5CT yog lub koom haum American Petroleum cov txheej txheem rauRoj Lub Tebchaws Tubular Khoom (OCTG), tshwj xeeb yog casing thiab tubing siv nyob rau hauv cov roj thiab roj qhov dej. Nws tswj kev tsim khoom, qhov ntev, cov khoom siv kho tshuab, thiab cov kev sim ntsuas rau ntau qib steel. Qhov kev qhia tshwj xeeb no ua kom ntseeg tau tias cov kav dej downhole muaj qhov ruaj khov txaus los tiv thaiv qhov hnyav sab nraud, hnyav tensile loads, thiab corrosive tej yam kev mob (H₂S/CO₂) ntsib thaum lub sijhawm ua haujlwm drilling thiab tsim khoom.

 

Qhov txawv ntawm L80 thiab T95 yog dab tsi?

L80 (tshwj xeeb tshaj yog L80-13Cr) feem ntau yog tsim los tiv thaiv CO₂ corrosion, nrog lub zog nruab nrab.

T95 feem ntau yog tsim los rau lub zog siab thiab ua haujlwm rau H₂S kev ntxhov siab corrosion (SSC), nrog rau lub zog ntau dua thiab kev tswj xyuas nruj dua.

 

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