Casing yeeb nkab qib yog categorized los ntawm covAPI 5 CTspecification. A "qib" txhais cov yeeb nkab qhov tsawg kawg nkaus tawm lub zog, nws cov chemistry, thiab ib puag ncig nws tsim los ua haujlwm (xws li corrosive lossis siab - qhov dej siab).
Cov qhab nia feem ntau muab faib ua plaub pawg raws li lawv cov khoom:
Xav tau ib txoj hlua ua tiav?Thov ib daim ntawv sau ua kerau tus neeg xyuas pib, Nto, thiab ntau lawm casing hnub no.
Pawg 1: Lub Hom Phiaj (Kev Pabcuam Qab Zib)
Cov no yog cov qhab nia feem ntau thiab kev lag luam. Lawv siv hauv qhov dej uas tsis muaj Hydrogen Sulfide (H2S) thiab kev kub siab yog qis rau nruab nrab.
H40:Tsawg zog, tsis tshua muaj siv nyob rau hauv niaj hnub drilling.
J55:Lub "workhorse" rau qhov ntiav, qis - qhov dej siab. Economic thiab dav muaj.
K55:Zoo ib yam li J55 tab sis muaj zog tensile ntau dua (nyuaj dua rub sib nrug).
N80 (-1 lossis -Q):Qib nruab nrab -tier. N80-Q yog quenched thiab Tempered, ua rau nws tawv dua li qhov qub N80-1.
Pab Pawg 2: Kev txwv tsis pub muaj txiaj ntsig (Sour Service)
Cov qib no tau tsim tshwj xeeb los tiv thaivSulfide Stress Cracking (SSC)hauv qhov dej uas muaj H2S. Lawv tau tswj nruj nruj txwv kev txwv (feem ntau max 23 HRC).
L80 (Hom 1, 9Cr, 13Cr):Cov qauv kev lag luam rau kev pabcuam qaub. 13Cr variants ntxiv Chromium rau CO2tsis kam.
C90:Lub zog siab dua L80 tab sis tseem qaub -resistant.
T95:High-lub zog qaub qhov kev pabcuam qib, feem ntau siv hauv qhov tob, siab -siab corrosive qhov dej.
C110:Qhov siab tshaj plaws API qib uas tseem muaj ntawv pov thawj rau kev pabcuam qaub.
Pab Pawg 3: Siab Zog (Qhov tob / Siab Siab)
Cov no yog siv rau cov qhov dej tob heev qhov twg lub casing yuav tsum txhawb nqa ib tug loj npaum li cas ntawm nws tus kheej qhov hnyav thiab tiv taus huab cua sab hauv.
P110:Ib qho zoo heev - qib zog rau qhov tob, tsis yog - corrosive qhov dej. Nws yog cim nrog ib tug dawb band.
Pab pawg 4: Tshwj xeeb / siab heev
Q125:Tsim los rau qhov chaw huab cua tshaj plaws. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 125,000 psi thiab yuav tsum muaj kev sim nruj ntawm txhua qhov sib koom ua ke.
Lub rooj sib piv
| Qib | Min Yield zog (psi) | Kev Pabcuam Ib puag ncig | API Xim Code |
| J55 | 55,000 | General (qab zib) | Ib Kaj Ntsuab |
| K55 | 55,000 | General (qab zib) | Ob Bright Ntsuab |
| N80-Q | 80,000 | General (qab zib) | Ib Liab + Ib Ntsuab |
| L80 | 80,000 | Kev pab cuam (H2S ) | Ib Liab |
| P110 | 110,000 | Sib sib zog nqus / siab | Ib Dawb |
| Q125 | 125,000 | Huab Deep Wells | Ib Txiv Kab ntxwv |
API 5CT Oilfield Tubing Test equipments
API 5CT Roj Yeeb Nkab Hoobkas
FAQ
Range 3 casing yog dab tsi?
Range 3 casingyog hais txog tus qauv tshwj xeeb ntev ntawm ib tus neeg cov yeeb nkab pob qij txha raws li tau hais los ntawm tusAPI 5 CTspecification.
Ntev:Nruab nrab34i48ft ua(10.36-14.63 m).
Kev sib piv:Nws yog qhov ntev tshaj plaws ntawm peb qhov API (Range 1 yog qhov luv tshaj, Range 2 yog qhov feem ntau).
Qhov zoo:Kev siv cov kab sib txuas ntev dua 3 cov pob qij txha txo tag nrho cov kev sib txuas (threaded pob qij txha) hauv qhov dej, uas ua rau cov txheej txheem "khiav" thiab txo cov ntsiab lus xau.
Qhov tsis zoo:Lawv nyuaj rau kev thauj mus los thiab yuav tsum tau siab dua drilling rig derricks los tuav qhov ntev ntxiv.
Dab tsi yog qhov txawv ntawm cov yeeb nkab casing?
Casing kav yog categorized feem ntau los ntawm lawvmuaj nuj nqithiab txoj haujlwm hauv lub qhov dej. Muaj tsib yam tseem ceeb:
Conductor Casing:Thawj thiab loj tshaj plaws yeeb nkab ntsia. Nws tiv thaiv sab saum toj ntawm lub qhov dej los ntawm caving nyob rau hauv thiab stabilizes lub drilling platform.
Nto Casing:Tiv thaiv cov dej tsis huv los ntawm kev sib kis thiab muab kev txhawb nqa rau Blowout Preventer (BOP).
Intermediate Casing:Siv nyob rau hauv qhov tob tob los kaw qhov siab - thaj chaw siab los yog tsis ruaj khov uas tuaj yeem ua rau muaj teeb meem drilling.
Production Casing:Txheej kawg ntawm cov yeeb nkab. Nws cais cov roj thiab roj ntau lawm cheeb tsam thiab tiv thaiv cov tubing ntau lawm.
Liners:Ib txoj hlua ntawm casing uas tsis txuas mus rau saum npoo tab sis yog dai los ntawm hauv qab ntawm cov hlua casing yav dhau los kom txuag tau cov nqi thiab qhov hnyav.
