Roj casingyog cov yeeb nkab steel siv los txhawb cov phab ntsa zoo ntawm cov roj thiab cov roj qhov dej kom ntseeg tau tias kev ua haujlwm zoo ntawm tag nrho cov roj zoo thaum lub sijhawm drilling thiab tom qab ua tiav. Txhua lub qhov dej siv ob peb txheej ntawm cov casing raws li qhov sib txawv ntawm qhov tob tob thiab geological tej yam kev mob.

Tom qab lub casing txo qis rau hauv lub qhov dej, cov cement yuav tsum tau siv los kho lub casing. Tsis zoo li cov kav dej thiab cov kav dej laum, nws tsis tuaj yeem rov qab siv dua thiab yog cov khoom siv ib zaug. Yog li ntawd, kev siv cov casing tso nyiaj rau ntau tshaj 70% ntawm tag nrho cov kav dej.

Casing yuav muab faib ua: conduit, nto casing, technical casing thiab roj txheej casing raws li kev siv.

Hlau qib ntawm cov roj casing: H40, J55, K55, N80, L80, C90, T95, P110, Q125, V150, thiab lwm yam. Casing kawg ua cov ntaub ntawv: luv round xov, ntev round xov, ib feem trapezoidal xov, tshwj xeeb buckle, thiab lwm yam. Siv nyob rau hauv cov roj zoo drilling, nws yog tsuas yog siv los txhawb lub phab ntsa zoo thaum lub sij hawm drilling txheej txheem thiab tom qab ua tiav zoo los xyuas kom meej cov txheej txheem drilling thiab kev ua haujlwm zoo ntawm tag nrho cov roj zoo tom qab ua tiav.

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Kev xam qhov hnyav
[(Ob txoj kab uas hla-phab ntsa thickness)* phab ntsa thickness]*0 02466=kg/meter (hnyav ib meter)
tshuaj muaj pes tsawg leeg
(1) Raws li cov kev cai ntawm SY/T6194-96. Lub casing thiab nws cov couplings yog tib qib steel. Cov ntsiab lus sulfur<0.045%, phosphorus content <0.045%;

OCTG Casing and Tubing

casing pipeline

Casing Pipe

API qhia peb qhov ntev: R-1 yog 4.88 ~ 7.62m, R-2 yog 7.62 ~ 10.36m, thiab R-3 yog 10.36m lossis ntev dua.

Anti-corrosion countermeasures rau roj casing
1. Ua ntej, xyuas kom meej tias cov dej zoo raws li cov qauv thiab nruj me ntsis saib xyuas thiab tswj cov dej zoo. Siv cais tu thiab txhaj tshuaj, ntxiv dag zog rau kev ua haujlwm ntawm cov kav dej loj, xyuas kom cov dej zoo hauv qhov chaw nres tsheb thiab hauv qab ntawm lub qhov dej ua tau raws li cov qauv, thiab txo cov kev taw qhia ntawm corrosion mus rau hauv qhov chaw annular.
2. Rau cov dej txhaj tshuaj uas tau muab tso rau hauv kev tsim khoom tshiab, siv cov kua dej tiv thaiv annular feem ntau rau kev ua kom tsis muaj menyuam, thiab tsim kom muaj qhov system ntxiv kom tsis tu ncua.
3. Nyob rau hauv qhov pom ntawm qhov acceleration nyhuv ntawm cov neeg kho tshuab khawb ntawm corrosion ntawm cov roj casing, nws raug nquahu kom ntxiv ib lub nplhaib roj hmab rau kev sib txuas ntawm cov roj yeeb nkab los yog lub hauv paus rau qhov sib txawv ntawm lub qhov dej loj los tiv thaiv cov roj yeeb nkab los ntawm khawb. lub casing thiab thaum lub sij hawm kev txhaj tshuaj dej. Ib sab hu rau lub casing.
4. Nyob rau hauv kev pom ntawm cov kab mob loj heev corrosion nyob rau hauv lub teev thiab kev loj hlob qeeb thiab tua ntawm SRB ntawm qhov kub thiab txias, cov dej kub los yog dej vapor ntawm 100 degrees Celsius tuaj yeem niaj hnub txhaj rau hauv lub annulus kom tua cov SRB nyob rau hauv lub teev.
5. Ua ntej qhov corrosion ntawm cov dej txhaj tshuaj zoo casing yog tswj tau zoo, nws tsis pom zoo los txhawb kev siv cov cathodic tiv thaiv thiab coated casing.

Gnee muaj ISO9001-2000 kev tswj hwm zoo thiab ISO14001 kev tiv thaiv ib puag ncig. Nyob rau tib lub sijhawm, nws nquag tsim kev sib txawv thiab tau tsim cov pa roj carbon steel thiab stainless hlau, npog cov kav dej, profiles, daim hlau thiab lwm yam khoom. Exported rau ntau tshaj 60 lub teb chaws thiab cheeb tsam xws li Russia, Canada, Is Nrias teb, Brazil, thiab Southeast Asia.

GNEE Cov kev pabcuam muaj nqis ntxiv
UT (Ultrasonic kuaj)
AR (Raws li Kub Rolled nkaus xwb)
TMCP (Thermal Mechanical Control Processing)
N (Normalized)

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