API 5CT T95 Pub Tube Rau Acid Service
API 5CT T95yog asiab -lub zog, Sour Serviceqib ntawm casing thiab tubing, categorized hauv qabPab pawg 2Raws li API 5CT specification. Nws tau ua tiav los ntawm Quenched & Tempered (Q&T) kev kho cua sov thiab yog tsim tshwj xeeb rau kev siab -siab, tob- zoo ib puag ncig uas muaj Hydrogen Sulfide (H2S ). Nrog lub zog tawm los ntawm 95 ksi, nws muaj kev ua tau zoo dua li tus qauvL80qaub- qib kev pabcuam, ua rau nws yog cov khoom siv tseem ceeb rau kev ua haujlwm siab -cov roj acidic thiab roj av.
Ruaj Ntseg Koj Siab -Ntxhiab Sour Wells! API 5CT T95 muab H2S zoo duativ thaiv kom tsis txhob SSC tsis ua haujlwm.Thov ib daim ntawv thov tswv yim tam sim no.
API 5CT T95 Casing & Tubing Xim Code
Txhawm rau ua kom yooj yim rau kev txheeb xyuas sai ntawm -site, cov kav dej thiab cov couplings yog xim -coded raws li hauv qab no:
| Qib | Lub cev Band Xim | Coupling Xim |
| T95-1 | 1 Nyiaj Band | Painted Silver (tag nrho) |
API 5CT T95 Oilfield Casing Pipes Chemical Composition (%)
T95 muaj cov kev cai nruj heev rau impurities (P, S) kom ntseeg tau zoo heev tiv thaiv Sulfide Stress Cracking (SSC).
| Element | C | Mn | P | S | Si | Cr | Mo |
| Cov ntsiab lus (%) | 0.25 - 0.35 | 0.40 - 1.20 | Tsawg dua lossis sib npaug li 0.020 | Tsawg dua los yog sib npaug li 0.005 | Tsawg dua lossis sib npaug li 0.45 | 0.40 - 1.50 | 0.25 - 0.85 |
API 5CT T95 Casing rau Sour Service Mechanical Properties
Lub ntsiab feature ntawm T95 yog qhov sib npaug ntawmsiab zog thiab tswj hardness.
| Khoom | Kev xav tau |
| Yield zog | 655 - 758 MPa (95 - 110 ksi) |
| Tensile zog | Ntau dua lossis sib npaug rau 724 MPa (105 ksi) |
| Maximum Hardness | Tsawg dua lossis sib npaug li 25.5 HRC(los yog 255 HBW) |
| Hardness Variation | nruj me ntsis txwv ib leeg kom ntseeg tau tias uniformity |
API 5CT T95 Tubing Size Daim Ntawv Qhia
| Nominal OD (ntiv nplhaib) | Sab nraud txoj kab uas hla (mm) | Phab ntsa Thickness (mm) | Nominal Nyhav (lb/ft) | Hom kev sib txuas |
| 2 3/8" | 60.32 | 4.83 | 4.60 / 4.70 | NUJ, EU |
| 2 7/8" | 73.02 | 5.51 | 6.40 / 6.50 | NUJ, EU |
| 3 1/2" | 88.90 | 6.45 | 9.20 / 9.30 | NUJ, EU |
| 4" | 101.60 | 6.65 | 11.00 | NUJ, EU |
| 4 1/2" | 114.30 | 6.88 | 12.60 / 12.75 | NUJ, EU |
API 5CT T95 Casing Size Chart
| Nominal OD (ntiv nplhaib) | Sab nraud txoj kab uas hla (mm) | Phab ntsa Thickness (mm) | Nominal Nyhav (lb/ft) | Kev sib txuas |
| 4 1/2" | 114.30 | 6.35 | 11.60 | STC, LTC, BTC |
| 114.30 | 7.37 | 13.50 | STC, LTC, BTC | |
| 5" | 127.00 | 7.52 | 15.00 | STC, LTC, BTC |
| 127.00 | 9.19 | 18.00 | STC, LTC, BTC | |
| 5 1/2" | 139.70 | 7.72 | 17.00 | STC, LTC, BTC |
| 139.70 | 9.17 | 20.00 | STC, LTC, BTC | |
| 139.70 | 10.54 | 23.00 | STC, LTC, BTC | |
| 6 5/8" | 168.28 | 8.94 | 24.00 | STC, LTC, BTC |
| 7" | 177.80 | 9.19 | 26.00 | STC, LTC, BTC |
| 177.80 | 10.36 | 29.00 | STC, LTC, BTC | |
| 177.80 | 11.51 | 32.00 | STC, LTC, BTC | |
| 177.80 | 12.65 | 35.00 | STC, LTC, BTC | |
| 7 5/8" | 193.68 | 10.92 | 33.70 | LTC, BTC |
| 193.68 | 12.70 | 39.00 | LTC, BTC | |
| 9 5/8" | 244.48 | 10.03 | 40.00 | LTC, BTC |
| 244.48 | 11.99 | 47.00 | LTC, BTC | |
| 244.48 | 13.84 | 53.50 | LTC, BTC | |
| 10 3/4" | 273.05 | 11.43 | 51.00 | STC, LTC, BTC |
| 13 3/8" | 339.72 | 12.19 | 68.00 | STC, BTC |
| 339.72 | 13.06 | 72.00 | STC, BTC |
API 5CT T95 Roj Tubing kam rau ua
| 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 (-12.5%) |
| Qhov hnyav | Ib qho kev sib koom ua ke: +6.5% / -3.5%; Load: -1.75% |
| Kev ncaj | Tag nrho kev sib txawv Tsawg dua lossis sib npaug li 0.2%; Xaus sib txawv Tsawg dua lossis sib npaug li 3.2mm |
Kev kuaj thiab tshuaj xyuas ntawm API 5CT T95 Pipes
Raws li qaub- qib kev pabcuam, T95 kev tshuaj xyuas yog qhov nruj dua li cov qauv qib:
SSC Test (NACE TM0177):Yuav tsum tau xeem Sulfide Stress Cracking test; Qhov no yog qhov tseem ceeb tsim nyog rau T95.
Kev kuaj Hardness:Kev sib koom ua ke - los ntawm - kev tshuaj xyuas kev sib koom ua ke kom ntseeg tau tias tsis muaj ib qho taw tes tshaj 25.5 HRC.
Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT):Nrog rau tag nrho -Length Ultrasonic Testing (UT) thiab Magnetic Particle Inspection (MPI).
Hydrostatic Test:Txhawm rau txheeb xyuas qhov tseeb siab thiab sealing nyob rau hauv siab.
Physicochemical Analysis:Xws li kev ntsuam xyuas Tensile, Impact tests (transverse and longitudinal), thiab Metallographic analysis.
API 5CT T95 Pipe Finishing Table
| Hom tiav | Kev piav qhia |
| Hom kawg | Plain End (PE), Threaded & Coupled (T&C), Upset End (UE) |
| Hom xov | BTC (Buttress), LTC (Long Round), STC (Short Round), NUE, EUE |
| Kev tiv thaiv nto | Cov xim dub / xeb- tiv thaiv roj sab nrauv; threads phosphate |
| Hwm Kev Sib Txuas | Gas -nruj premium threads muaj raws li qhov kev thov |
API 5CT T95 Oilfield Casing PipesNta:
Superior Sour Resistance:Tshwj xeeb tsim los tiv thaiv Sulfide Stress Cracking (SSC) nyob rau hauv siab H2S ib puag ncig.
Tswj Hardness:nruj me ntsis capped ntawm 25.5 HRC los tiv thaiv hydrogen embrittlement thaum tuav lub zog siab.
Consistent Microstructure:Advanced alloying thiab Q&T ua kom muaj cov qauv zoo heev tempered martensite.
Kev ntseeg siab:Muaj zog dua L80 thiab muaj kev nyab xeeb dua li P110 hauv qhov dej corrosive.
API 5CT T95 OCTG CasingDaim ntawv thov:
Sour Gas Wells:Siv nyob rau hauv ib puag ncig nrog siab Hydrogen Sulfide concentrations qhov twg cov kav dej yuav ua tsis tiav.
Siab -Kev rho tawm siab:Haum rau cov qhov dej sib sib zog nqus nrog qhov tseem ceeb ntawm kev sib tsoo thiab axial loads.
Critical Production Strings:Feem ntau yog siv los ua cov casing los yog tubing rau siab - tso zis, tob acidic qhov dej.
High-Zoos Risk:Ntiaj teb no lees paub tias yog tus qauv rau nruab nrab - mus rau - siab zog qaub cov yeeb nkab nyob rau hauv complex oilfields.
API 5CT T95 Oilfield Tubing Test thiab tshuaj xyuas
API 5CT T95 Petroleum Casing Pipe Factory
FAQ
Lub zog tensile ntawm API 5CT T95 yog dab tsi?
Qhov tsawg kawg nkaus tensile lub zog ntawm API 5CT T95 yog 105,000 psi (724 MPa).
Nws cov core mechanical zog yog raws li nram no:
Tsawg tensile zog: 105,000 psi (724 MPa)
Yam tsawg kawg nkaus lub zog: 95,000 psi (655 MPa)
Lub zog siab tshaj plaws: 110,000 psi (758 MPa)
Qhov ntev ntawm API 5CT T95 yog dab tsi?
Qhov ntev ntawm API 5CT T95 ua raws li peb qhov kev teev tseg los ntawm API tus qauv, nrog Range 2 yog qhov feem ntau siv:
Range 1 (R1): Casing 4.88–7.62m; Tubing 6.10–7.32 m.
Range 2 (R2): Casing 7.62–10.36m; Tubing 8.53–9.75m (qhov feem ntau siv kev lag luam tus qauv ntev).
Range 3 (R3): Casing 10.36–14.63m; Tubing 11.58–12.80 m.
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