Kev paub txog roj pipeline

1. Kev faib tawm ntawm cov kav dej roj
Cov kav dej roj tau muab faib ua cov kav dej tiaj tus (NU), cov kav roj ua kom tuab (EU) thiab cov kav dej sib koom ua ke. Flat roj yeeb nkab txhais tau hais tias cov yeeb nkab kawg yog ncaj qha threaded thiab txuas nrog lub coupling yam tsis muaj thickening. Thickened roj yeeb nkab txhais tau hais tias tom qab ob lub yeeb nkab kawg yog externally thickened, lawv yog ces threaded thiab txuas nrog couplings. Kev sib koom ua ke roj yeeb nkab yog hais txog ib qho kawg dhau los ntawm cov xov hlau sab hauv ntawm lub tsheb, thiab lwm qhov kawg dhau los ntawm cov xov sab nraud thickened, thiab txuas ncaj qha yam tsis muaj kev sib txuas.
2. Lub luag haujlwm ntawm cov kav dej roj
① Extract cov roj thiab roj: Tom qab cov roj thiab roj qhov dej tau drilled thiab cemented, cov kav dej tau muab tso rau hauv cov roj txheej casing kom rho cov roj thiab roj rau saum npoo.
②. Kev Txhaj Tshuaj Dej: Thaum lub qhov qis qis tsis txaus, dej yog txhaj rau hauv qhov dej los ntawm lub raj.
③. Kev Txhaj Tshuaj: Thaum lub sij hawm thermal rov qab txheej txheem ntawm cov roj hnyav, cov kav dej roj insulated yuav tsum tau siv los nkag rau hauv chav dej.
④. Acidification thiab fracturing: Nyob rau theem tom ntej ntawm qhov dej drilling los yog txhawm rau txhawm rau tsim cov roj thiab cov qhov dej, nws yog ib qho tsim nyog yuav tsum nkag mus rau acidification thiab fracturing media lossis solidified cov ntaub ntawv rau cov roj thiab roj txheej. Cov ntaub ntawv xov xwm thiab cov khoom khov kho yog thauj los ntawm cov kav dej.

3. Steel qib ntawm cov roj yeeb nkab
Cov roj yeeb nkab steel qib muaj xws li: H40, J55, N80, L80, C90, T95, P110.
N80 muab faib ua N80-1 thiab N80Q. Qhov zoo sib xws ntawm ob yog tias cov khoom tensile yog tib yam. Qhov sib txawv ntawm ob yog lub xeev xa khoom thiab kev cuam tshuam kev ua haujlwm. N80-1 raug xa mus rau hauv lub xeev normalizing lossis thaum kawg dov qhov kub siab tshaj qhov tseem ceeb Thaum qhov kub thiab txias yog Ar3 thiab qhov nro txo ​​thiab cua txias, kub dov tuaj yeem siv tsis yog normalizing. Tsis muaj qhov yuav tsum muaj rau kev cuam tshuam lub zog thiab kev sim tsis muaj kev puas tsuaj; N80Q yuav tsum tau quenching thiab tempering (quenching thiab tempering) kev kho cua sov, thiab lub zog cuam tshuam yuav tsum ua raws li API 5CT cov cai. Thiab kev tshuaj xyuas tsis muaj kev puas tsuaj yuav tsum tau ua.
L80 muab faib ua L80-1, L80-9Cr thiab L80-13Cr. Lawv mechanical zog thiab kev xa khoom zoo ib yam. Qhov txawv yog xav txog kev siv, kev tsim khoom nyuaj thiab tus nqi. L80-1 yog hom zoo tib yam, thaum L80-9Cr thiab L80-13Cr yog ob qho tib si corrosion-resistant roj kav, uas nyuaj rau tsim thiab kim. Lawv feem ntau yog siv nyob rau hauv hnyav corroded roj qhov dej.
C90 thiab T95 muab faib ua hom 1 thiab hom 2, xws li C90-1, C90-2 thiab T95-1, T95-2.

4. Feem ntau siv cov qib steel, hom thiab kev xa khoom ntawm cov kav dej
Steel qib qib xa khoom raws li txoj cai
J55 roj yeeb nkab 37Mn5 ca roj yeeb nkab: kub dov es tsis txhob normalizing
Thickened roj yeeb nkab: Tom qab thickening, tag nrho ntev yog normalized
N80-1 roj yeeb nkab 36Mn2V ca roj yeeb nkab: kub dov es tsis txhob normalizing
Thickened roj yeeb nkab: Tom qab thickening, tag nrho ntev yog normalized
N80-Q roj yeeb nkab 30Mn5 tag nrho ntev tempered
L80-1 roj yeeb nkab 30Mn5 tag nrho ntev tempered
P110 roj yeeb nkab 25CrMnMo tag nrho ntev tempered
J55 txuas 37Mn5 kub dov online normalization
N80 coupling 28MnTiB tag nrho ntev quenched thiab tempered
L80-1 coupling 28MnTiB tag nrho ntev quenched thiab tempered
P110 coupling 25CrMnMo tag nrho ntev tempered