1. Dab tsi yog roj casing C90?
Roj casing C90 yog cov qib hlau tshwj xeeb ntawm cov roj pov. Roj casing yog txoj sia rau kev tswj hwm cov haujlwm ntawm cov roj muaj txiaj ntsig. Nws yog siv los txhawb phab ntsa zoo thaum drilling thiab tom qab ua tiav kom ntseeg tau tias qhov kev ua haujlwm ib txwm ntawm cov txheej txheem drilling thiab tag nrho cov roj zoo tom qab ua tiav. C90 yog ib qho ntawm cov hlau hlau qib kawm tau faib raws li rau lub zog ntawm tus hlau nws tus kheej. Cov dej sib txawv thiab qhov tob tob yuav siv cov qauv hlau sib txawv ntawm cov cim.
2. Dab tsi yog cov yam ntxwv ntawm cov roj dab dab tsi c90?
Nyob rau hauv ib puag ncig corrosive, C90 cov roj uas yuav tsum muaj corrosion tsis kam; Nyob rau hauv cov chaw nrog cov kev mob geological nyuaj, nws kuj yuav tsum muaj kev tawm tsam kev ua haujlwm kom yoog kom haum rau cov xwm txheej sib txawv. Nws tuaj yeem ua kom muaj kev ua haujlwm ruaj khov ntawm cov roj muaj cov chaw ntau dua rau qee qhov chaw.
3. Dab tsi yog qhov tseem ceeb tshaj plaws rau roj casing C90?
Nws yog dav siv nyob rau hauv daim teb ntawm cov roj tawm. Hauv ntau hom roj cov roj muaj txiaj ntsig, nws yog siv los txhawb cov phab ntsa zoo kom ua kom cov txheej txheem kev txhim kho kom nruj thiab ua haujlwm ib txwm muaj ntawm cov roj zoo tom qab ua tiav. Nws yog qhov tshwj xeeb tshaj yog tsim nyog rau cov roj zoo ib puag ncig nrog qee qhov kev ua kom zoo lossis muaj peev xwm zam cov teeb meem xws li kev txo cov roj kev sib raug zoo lossis cov tshuaj txhuam uas tau los ntawm kev puas tsuaj.
4. Dab tsi yog cov qauv tsim khoom ntawm cov roj casing C90?
Nyob rau hauv cov nqe lus ntawm cov tshuaj muaj kuab lom, raws li SY / T6194-96, lub casing thiab nws txoj kev txuas ntawm tib tus qauv steel, nrog cov lus faj sulfur ntawm<0.045% and a phosphorus content of <0.045%; chemical analysis samples are taken according to GB/T222-84, and chemical analysis is performed according to the relevant provisions of GB223. In terms of performance testing, flattening tests (GB246-97), tensile tests (GB228-2010) and water pressure tests are required; hydrostatic pressure tests, flattening tests, sulfide stress corrosion cracking tests, hardness tests, etc. can also be performed according to the American Petroleum Institute API SPEC5CT 1988, 1st edition.
5. Dab tsi yuav tsum tau them nyiaj rau thaum siv cov roj casing C90?
Ua tib zoo saib xyuas cov neeg ua haujlwm tiag tiag ntawm cov roj zoo, xws li yuav tsum muaj cov roj corrosive, kev tshuaj xyuas lub siab cia yog tias nws muaj kev ua tau zoo, thiab lwm yam. Raws li cov cai. Thaum cov casing qhia cov cim kev puas tsuaj, yuav tsum tau ntsuas raws sij hawm los kho cov roj kom zoo thiab tiv thaiv kom tag nrho cov khoom siv tshwj xeeb los ntawm kev txo qis ntau lossis txawm tias raug rho tawm.
