Lub ntsiab
API spec 5ct(Kev qhia txuj ci tshwj xeeb rau casing thiab tubing) yog ib tus qauv thoob ntiaj teb tshaj tawm los ntawm American cov peev txheej (API). Nws qhia txog cov txheej txheem kev mob rau cov kav hlau steel (bawv thiab tubing) siv hauv cov roj av thiab ntuj muaj kev lag luam.
K55yog ib qho ntawm cov qib kawm tau sau tseg hauv cov qauv no. Nws yog ib feem siv tau siv rau nws cov nyiaj tshuav zoo ntawm lub zog, ductility, thiab tus nqi- ua hauj lwm ua tau zoo.
1. Cov yam ntxwv tseem ceeb ntawm K55 Seamless Yeeb Nkab
Hom:Feem ntau siv rauCasingCov. Casing yog qhov loj- txoj kab uas hla uas hla kev los tiv thaiv lub qhov los ntawm kev sib tsoo thiab cais tawm cov qauv sib txawv.
Txheej txheem tsim khoom: Tsis ntseCov. Cov yeeb nkab tsim los ntawm tho ib qho khoom ntim ntawm cov hlau, uas ua rau cov khoom muaj zog nyob ib ncig ntawm nws txoj kev ncig thiab tsis muaj seam veam. Qhov no ua rau nws ntseeg tau rau high- qhov kev siv siab.
Qib lub ntsiab lus:Tus "k" tsim nws raws li cov qib uas muaj nuj nqi. Tus lej "55" yog hais txog nwsYam tsawg kawg nkaus los lub zog ntawm 55,000 psi(phaus ib square nti). Qhov no yog ntsuas ntawm kev ntxhov siab uas cov khoom pib deform plastically.
2. Cov Cuab Yeej Siv Tshuab (raws li API 5Ct tshooj tshiab)
Cov khoom txhais tau txhais rau cov yeeb nkab lub cev, tsis yog txuas.
| Ntiag tug | Qhov toob kas | Sau ntawv |
|---|---|---|
| Yam tsawg kawg nkaus xwb Zog | 55,000 psi(379 MPa) | Qhov kev ntxhov siab yuav tsum tau tsim cov nyiaj uas muaj los ntawm kev sib txawv (0.5% hom). |
| Qhov Tshaj Tawm Los Muaj Zog | 80,000 psi(552 mpa) | Qhov kev txwv siab tshaj plaws yog qhov tseem ceeb heev los xyuas kom cov yeeb nkab muaj qhov sib luag txaus thiab tawv. |
| Yam tsawg kawg tensile lub zog | 95,000 psi(655 mpa) | Qhov kev ntxhov siab yuav tsum tau rub cov khoom sib nrug (tawg). |
| Hardness (HRC) | Ntau tshaj 22.0 | Rockwell C hardness yog txwv kom ntseeg tau tias kev pabcuam sulfide |
| Paib lub zog piv | Tsawg dua los yog sib npaug rau 0.85rau d tsawg dua los yog sib npaug rau 4.5 " | Qhov sib piv ntawm cov ntsuas tawm los lub zog rau lub zog ntsuas tensile. Ib qho kev sib piv tsawg qhia tau zoo dua deformation muaj peev xwm ua ntej tsis ua tiav. |
3. Tshuaj lom neeg muaj pes tsawg leeg (kwv yees)
API 5CT tsis tau muab tshuaj nruj siv tshuaj rau K55. Hloov chaw, nws teeb tsa cov cai rau cov neeg kho tshuab thiab hardness. Cov tshuaj lom neeg muaj pes tsawg leeg yog sab laug rau cov steel mantrection kom tau raws li cov khoom ntiag tug. Txawm li cas los xij, kev txheeb xyuas tshuaj lom neeg rau K55 zoo ib yam li cov carbon {{5 5}} manganese steel.
| Lub ntsiab | Cov Khoom Nquag Yog |
|---|---|
| Carbon (c) | 0.34 - 0.39% |
| Manganese (mn) | 1.25 - 1.50% |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.020% |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.015% |
| Silicon (si) | 0.20 - 0.35% |
4. Qhov chaw seem
Sab nraud ntawm lub taub (OD):Ranges los ntawm kwv yees li ntawm 4.5 nti rau 13.375 nti thiab loj dua, nyob ntawm tus qauv ntau teev nyob hauv API 5ct.
Phab Ntsa Thickness:Sib txawv raws li cov lus teev tsegphaus ib txhais ko taw(piv txwv li, 11.60 LB / FT, 15.50 LB / FT, 17.00 LB / FT). Cov qauv tsim muaj xws li:
BTC:Buttress Xov Casing
LTC:Cov Xov Ntev
:Luv Xov Casing
Ntev ntev:Cov kav dej tau muab tso rau hauv peb qhov ntev ntev:
R1:16 - 25 ft (4.88 - 7.62 m)
R2:25 - 34 ft (7.62 - 10.36 m)
R3: > 34 ft (> 10.36 m)
5. Xov thiab Coupling
K55 Casing yog muaj ntau hom xov. Qhov kawg tuaj yeem yog:
Plain Kawg:Npaj kom txhij los welded hauv lub tshav pob.
Threaded & Coupled (T & C):Cov yeeb nkab xaus yog threaded, thiab ib co txuas txawv (luv luv, sab hauv threass) yog siv los koom ob leeg.
Sib koom ua ke:Kev sib txuas yog machined ncaj qha rau cov yeeb nkab lub cev nws tus kheej.
Hom Xov Cov Xov Xwm suav nrog Api Round Xov (CSG / LCSG), API Buttresss Xov (Hydril) (Hydril, thiab lwm yam).
6. Cov Ntawv Thov Tib Neeg
K55 Seamless Yeeb Nkab Yog Dav Siv Hauv:
Ntiav mus rau nruab nrab qhov tob roj & roj zoo:Qhov twg cov cai yuav tsum tsis yog neeg siab heev.
Nto casing:Thawj txoj hlua ntawm cov yeeb nkab khiav mus rau hauv lub qhov dej los tiv thaiv cov dej hauv qab dej tshiab.
Nruab nrab casing:Siv los muab cov qauv tsis ruaj khov lossis cov aav nrog cov kev ntsuas sib txawv.
Dej zoo casing:Vim nws lub zog zoo thiab tus nqi - ua tau zoo.
Cov ntawv thov txheej txheem:Qee lub sij hawm siv raws li piling lossis nyob rau lwm cov txheej txheem txheej txheem sab nraud sab nraum kev lag luam roj.
7. Kev sib piv nrog lwm cov qib (piv txwv li, J55, N80)
| Teem nqi | Min. Yield zog (PSI) | Max. Yield zog (PSI) | Hardness (HRC Max) | Qhov tseem ceeb sib txawv |
|---|---|---|---|---|
| K55 | 55,000 | 80,000 | 22.0 | Tov Zog Zog Tswj dua J55, muab me ntsis zoo dua SSC tsis kam. |
| J55 | 55,000 | 80,000 | Tsis teev | Pheej yig dua K55, tab sis tsis pom zoo rau txhua qhov kev pabcuam siur vim tsis muaj kev tswj hwm nyuaj. |
| N80-1 | 80,000 | 110,000 | 23.0 | Muaj zog dua K55, siv rau cov dej tob nrog cov siab dua. Hom 1 tsis muaj cov cai sSC tshwj xeeb. |
Lub ntsiab
API 5CT K55 Seamless Steel Yeeb Nkab yog ib qho ntau yam, nruab nrab- lub zog cas cim los ntawm nws55,000 psi yam tsawg kawg nkaus zog zog zog zogthiab aMAXUSION HARDENKE Txwv ntawm 22.0 teevCov. Nws seamless kev tsim kho muab cov kev ntseeg siab zoo, ua rau muaj kev xaiv tau zoo rau ntau yam kev siv rau nruab nrab {qhov tob, tsis yog} noj qaub ib puag ncig.
Rau cov phiaj xwm tseem ceeb, nws yog qhov tseem ceeb kom xa mus rau qhov tseeb tshaj ntawm API spec 5ct cov ntawv pov thawj (MTC) muab los ntawm cov chaw tsim khoom.
