Puas yog K55 carbon steel?
Yog lawm,K55yog qib carbon steel.
Tshwj xeeb, nws yog qib nruab nrab - carbon steel qib txhais los ntawmAPI (American Petroleum Institute) Specification 5CT. Nws yog feem ntau siv hauv kev lag luam roj thiab roj rauOCTG(Oil Lub Tebchaws Tubular Cov Khoom Siv), xws li zoo li casing thiab tubing.
Koom tes nrog API ntseeg siab -cov chaw tsim tshuaj paus.Saib Peb Qhov Kev Kawm Casesaib seb peb cov K55 carbon steel ua haujlwm li cas hauv thaj teb.
K55 Chemical Composition (raws li API 5CT)
API 5CT cov lus qhia tshwj xeeb rau K55 yog qhov hloov tau yooj yim txog cov ntsiab lus alloying. Nws feem ntau txwv cov teeb meem impurities (phosphorus thiab Sulfur). Cov ntsiab lus tshwj xeeb ntawm Carbon thiab Manganese yog txiav txim siab los ntawm cov chaw tsim khoom kom ua tau raws li qhov xav tau ntawm cov khoom siv kho tshuab.
| Lub Npe Lub Npe | Cim | Yuav tsum tau (Fraction) |
| Phosphorus | P | Tsawg dua lossis sib npaug li 0.030 |
| Sulfur | S | Tsawg dua lossis sib npaug li 0.030 |
| Cov pa roj carbon | C | Kev txiav txim siab ntawm tus neeg tsim khoom (feem ntau yog 0.20 - 0.40) |
| Manganese | Mn | Kev txiav txim siab ntawm tus neeg tsim khoom (feem ntau yog 1.00 - 1.50) |
K55 Mechanical Properties
Lub "55" hauv K55 sawv cev rau qhov tsawg kawg nkaus tawm lub zog ntawm 55,000 psi.
| Khoom | Chav tsev (psi) | Chav tsev (MPa) |
| Yield zog | 55,000 - 80,000 | 379 - 552 |
| Tensile zog | Ntau dua lossis sib npaug li 95,000 | Ntau dua lossis sib npaug rau 655 |
| Tsawg kawg Elongation | Raws li cov qauv ntoo khaub lig- ntu ntu | Raws li cov qauv ntoo khaub lig- ntu ntu |
| Hardness Test | Tsis muaj kev txwv siab tshaj plaws | Tsis muaj kev txwv siab tshaj plaws |
K55 Casing thiab Tubing Specification
| Feature | K55 specification |
| Txuj | API 5 CT |
| Hom khoom | Nruab nrab Carbon Steel |
| Min Yield zog | 55,000 psi |
| Min Tensile zog | 95,000 psi |
| Hom kev pabcuam | Kev Pab Cuam Qab Zib (Tsis yog-Qaub) |
| Zoo tshaj rau | Qhov dej ntiav / nruab nrab, qis - qhov chaw siab |
Yam ntxwv:
High Tensile zog:Thaum nws qhia tib lub zog tawm los li J55, K55 muaj lub zog tensile ntau dua, muab kev tiv thaiv zoo dua rau pob txha.
Machinability zoo heev:Nws muaj qhov zoo weldability thiab yooj yim rau xov (kev sib txuas ua haujlwm).
Tus nqi -Kev ua tau zoo:Raws li qis-rau- qib nruab nrab lub zog, nws yog qhov kev xaiv pheej yig rau qhov dej ntiav thiab nruab nrab- qhov tob tob.
Kev txwv:Nws yog tus qauv carbon steel thiab yogtsis yogresistant rau corrosion. Nws muaj feem cuam tshuam rau Sulfide Stress Cracking (SSC) nyob rau hauv ib puag ncig nrog siab
H2S sau CO2.
Daim ntawv thov:
Roj & Gas Drilling:Feem ntau siv raws liCasing(txoj hauv ob sab hauv lub borehole) thiabTubing(kev thauj cov roj / roj rau saum npoo).
Pw mus rau Medium Wells:Haum rau cov pa dej uas muaj qhov nruab nrab siab thiab qis corrosive ib puag ncig.
Cov yam ntxwv ntawm tus qauv:Siv nyob rau hauv tej yam oilfield geological tej yam kev mob raws li nto txhawb cov kav dej.
Sib piv: K55 vs J55
K55 thiab J55 yog cov qib zoo sib xws hauv API 5CT tus qauv. Lawv feem ntau sib hloov tau, tab sis qhov sib txawv yog qhov tseem ceeb:
| Cov khoom sib piv | J55 | K55 | Kev piav qhia txawv |
| Yield zog | 55 - 80 tsi | 55 - 80 tsi | Zoo ib yam |
| Tensile zog | Ntau dua lossis sib npaug rau 75 ksi (517 MPa) | Ntau dua lossis sib npaug rau 95 ksi (655 MPa) | K55 yog qhov siab dua |
| Tshuaj muaj pes tsawg leeg | Limited P, S | Limited P, S | Zoo sib xws (K55 tej zaum yuav muaj me ntsis siab dua alloys) |
| Kev kho cua sov | Tsis yuam | Tsis yuam | Ob qho tib si feem ntau yog xa tuaj raws li -rolled state |
| Kev Xa Khoom | Normalizing/tempering tso cai | Normalizing/tempering tso cai | Zoo ib yam |
| Kev thov ib puag ncig | Cov qhov dej dav dav, qis dua | Cov qhov dej dav dav, siab dua | K55 muaj kev nyab xeeb dua rau kev rub tawm |
API 5CT K55 OCTG Txheej Txheem Kab
API 5CT K55 Casing Pipe Test Equipments
API 5CT K55 Oil Well Casing Pipe daim ntawv pov thawj
FAQ
Cov tshuaj muaj pes tsawg leeg ntawm API 5CT K55 yog dab tsi?
Txawm hais tias qhov tseeb chemistry tuaj yeem sib txawv me ntsis los ntawm cov chaw tsim khoom, nws feem ntau muaj xws li:
Cov pa roj carbon (C):Feem ntau 0.20% - 0.40%
Manganese (Mn):Feem ntau 1.00% - 1.50% (ntxiv rau lub zog thiab tawv)
Phosphorus & Sulfur:Khaws rau hauv qis heev kom tsis txhob brittleness.
K55 casing khoom yog dab tsi?
K55 casing khoomyog ib qib tshwj xeeb ntawm carbon steel siv hauv kev lag luam roj thiab roj rauRoj Lub Tebchaws Tubular Khoom (OCTG). Nws yog tsim raws li lubAPI 5 CTspecification teev los ntawm American Petroleum Institute.
