API 5CT L80-1 Roj Lub Tebchaws Tubular Khoom

API 5CT L80-1 Oil Country Tubular Goods
API 5CT L80-1 OCTG
API 5CT L80-1 Oil Well Pipe

API 5CT L80-1 Roj Lub Tebchaws Tubular Khoom

API 5CT L80-1 yog hais txog qib roj av casing steel uas ua raws li API Spec 5CT tus qauv luam tawm los ntawm American Petroleum Institute (API), tshwj xeeb tshaj yog hom "L80-1" hauv qib L80.

Xa kev nug

Tsham tam sim no

Khoom Taw qhia

API 5CT L80-1 Roj Lub Tebchaws Tubular Khoom (OCTG)yog lub zog nruab nrab ntawm cov roj av tshwj xeeb cov yeeb nkab uas ua raws li American Petroleum Institute (API) 5CT tus qauv. Nws yog tsuas yog siv rau kev tsim cov casing thiab tubing nyob rau hauv cov roj thiab roj qhov dej thiab yog haum rau tsawg corrosive ib puag ncig.

L80-1 yog lub hauv paus hom nyob rau hauv qib L80 steel, nrog "L80" qhia qhov tsawg kawg nkaus yield zog ntawm 80 ksi (kwv yees li 552 MPa), uas muaj cov cuab yeej zoo thiab kev lag luam. L80-1 yog ua los ntawm carbon manganese hlau, uas tsis muaj cov ntsiab lus tseem ceeb alloying thiab tsis muaj qhov tshwj xeeb corrosion kuj. Nws feem ntau tiv thaiv corrosion los ntawm cov txheej txheem sab nraud (xws li epoxy resin).

Nws yog dav siv nyob rau hauv onshore pa pa qhov dej thiab cov pa roj, ntiav cov pa reservoirs, thiab shale gas kab rov tav qhov dej uas tsis muaj corrosion. Nws yog tus nqi qis tshaj plaws thiab cov qauv kev lag luam siab tshaj plaws hauv L80 series. Raws li API 5CT tus qauv, L80-1 tuaj yeem ua rau hauv casing, tubing, thiab laum yeeb nkab, nrog rau cov kab sib txawv ntawm Φ 114.3-508mm thiab phab ntsa tuab ntawm 5.21-16.13mm. Qhov ntev yog muab faib ua peb pawg: R1, R2, thiab R3.

Tseem txhawj xeeb txog kev hloov cov roj casing ntau zaus vim qhov tsis zoo compression tsis kam? API 5CT L80-1 roj casing, ua los ntawm cov khoom siv muaj zog tsim nyog rau kev nyuaj downhole,nyem kom tau txais cov kev daws teeb meem tshwj xeeb

Chemical Composition Table

Element	Cov ntsiab lus xav tau (%)	Sau ntawv
Cov pa roj carbon (C)	Tsawg dua lossis sib npaug li 0.45	Tswj hardenability, tiv thaiv vuam tawg
Manganese (Mn)	0.60–1.35	Txhim khu lub zog thiab toughness
Phosphorus (P)	Tsawg dua lossis sib npaug li 0.030	nruj me ntsis txwv kom tsis txhob txias brittleness
Sulfur (S)	Tsawg dua lossis sib npaug li 0.025	Txo kub tawg thiab corrosion pib
Silicon (Si)	0.10–0.45	Deoxidizer, txhim kho lub zog
Chromium (Cr), Nickel (Ni), Molybdenum (Mo)	Tsis muaj kev xav tau tshwj xeeb	Tsis muaj cov ntsiab lus tseem ceeb ntawm alloy, qhov txawv ntawm L80-9Cr / L80-13Cr

Mechanical Properties Table

Khoom	Tus nqi tsim nyog (API 5CT)	Yam Ntsuas Tus Nqi
Yield zog (YS)	‌Ntau dua lossis sib npaug li 552 MPa‌	580-650 MPa
Tensile zog (TS)	655-827 MPa	700-780 MPa
Elongation (A)	Ntau dua lossis sib npaug li 18%	20–25%
Hardness (HB)	Tsawg dua lossis sib npaug li 255	220–240
Impact Toughness (-20 degree)	Ntau dua lossis sib npaug li 40 J	50–60 J

Xim Band Identification

Raws li API 5CT cov qauv, cov xim xim cim rau L80-1 yog raws li hauv qab no:

‌Thawj Band: Liab‌

‌Secondary Band: Tsis muaj‌

‌Kev kos duab‌: A ‌25mm dav liab circumferential bandyog pleev xim rau ntawm ob qhov kawg ntawm cov yeeb nkab lub cev rau kev qhia ceev ceev ntawm qib.

Production Casing Size Table

Nominal Casing Loj (inch)	Sab nraud txoj kab uas hla (mm)	Common Phab Ntsa Thickness (mm)	Daim ntawv thov ntu
4½	114.3	6.35, 7.37, 8.56	Nruab nrab- thaj chaw tsim khoom tob
5	127.0	7.52, 9.19	Pa roj & roj qhov dej
5½	139.7	7.72, 9.17, 11.51	Main ntau lawm casing
7	177.8	8.05, 10.36, 12.65	Sib sib zog nqus ua tiav seem
9⅝	244.5	9.53, 11.05, 13.84	Nto / nruab nrab casing

‌API 5CT L80 Hom 1 Casing Tolerance Table

Yam khoom	Tolerance Yuav Tsum Tau
Sab nraud Diameter (OD)	± 0.75% (rau phab ntsa thickness Ntau dua lossis sib npaug rau 5.21mm)
Phab ntsa Thickness (WT)	+12.5% / -10.0%
Ntev	R1: +100mm / -200mm; R2/R3: +100mm / -150mm
Ovality	Tsawg dua lossis sib npaug li 0.75% OD
Kev ncaj	Tsawg dua lossis sib npaug li 3 hli / m, tag nrho Tsawg dua lossis sib npaug li 12 hli
Xov Parameters	Yuav tsum ua raws li API 5B tus qauv, nrog rau kev ua siab ntev ntawm lub suab, taper, thiab xov qhov siab

Casing Kev Txuas Hom

Hom kev sib txuas	Cov ntawv luv	Daim ntawv thov
Buttress Xov Casing	BTC / BC	Dav siv rau nruab nrab thiab qhov tob tob uas yuav tsum tau muaj peev xwm axial siab
Luv Xov Casing	STC	Feem ntau siv rau qhov dej ntiav mus rau nruab nrab - qhov tob tob
Ntev Xov Casing	LTC	Muab kev sib txuas zoo zog piv nrog STC
Hwm Kev Sib Txuas	-	Siv rau siab -siab, HPHT, thiab roj- nruj sealing yuav tsum tau

Rau kev tsim khoom hnyav, kev sib txuas zoo nrog hlau - mus rau - hlau sealing designs tej zaum yuav raug xaiv los txhim kho roj nruj thiab kev sib txuas ua haujlwm.

Phau Ntawv Qhia Xaiv Khoom: L80-1 vs L80 9Cr vs L80 13Cr

Cov qib L80 sib txawv yog tsim los rau kev sib tw corrosion sib txawv.

Qhov xwm txheej	L80-1	L80 9Cr	L80 13Cr
Hom khoom	Carbon -manganese hlau	9% Chromium alloy hlau	13% Chromium martensitic stainless hlau
Main Advantage	Tswj hardness thiab nqi efficiency	Txhim kho CO₂ corrosion kuj	Zoo heev CO₂ corrosion kuj
H₂S Service	Feem ntau xaiv thaum yuav tsum tau tswj hardness	Yuav tsum tau kev soj ntsuam xyuas kev pabcuam	Yuav tsum tau kev soj ntsuam xyuas kev pabcuam
CO₂ Resistance	txwv	Zoo	Zoo heev
Tus nqi txheeb ze	qis tshaj	Nruab nrab	Siab tshaj
Muaj	Muaj dav	Ntau qhov tshwj xeeb	Ntau qhov tshwj xeeb
Daim ntawv thov	Qab zib - qhov dej pab, cov qhov dej dav dav	Nruab nrab CO₂ corrosion ib puag ncig	CO₂ ntub dej ib puag ncig

Yuav tsum tau kho cua sov: Quench thiab Temper

API 5CT L80-1 xav tauquench-thiab- temper (Q&T) kev kho cua sovkom ua tiav qhov yuav tsum tau ua ke ntawm lub zog, toughness, thiab hardness tswj.

Cov txheej txheem suav nrog:

Quenching

Tag nrho- ntev cua sov ua raws li qhov txias txias kom tsim tau cov qauv martensitic hardened.

Tempering

Tswj reheating los hloov cov nkig quenched qauv rau hauv tempered martensite nrog txhim kho toughness thiab tswj hardness.

Lub hom phiaj ntawm Q&T kev kho mob yog kom ua tiav:

Yield zog ntawm 552-655 MPa

Qhov siab tshaj plaws hardness ntawm 23 HRC

Uniform mechanical zog raws cov yeeb nkab ntev

Txhim kho kev tiv thaiv rau SSC susceptibility

Tsis zoo li qee cov khoom lag luam N80 uas tuaj yeem muab tau rau hauv cov xwm txheej zoo li qub, L80-1 yuav tsum tau quench-thiab-kev kho mob raws li API 5CT cov cai.

Kev soj ntsuam thiab kev xeem yuav tsum tau

API 5CT L80-1 cov khoom lag luam raug tshuaj xyuas thiab kuaj xyuas cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov ntev, thiab kev ntseeg siab.

Qhov kev tshuaj ntsuam xyuas tseeb nyob ntawm:

Product Specification Qib (PSL)

Txoj kev tsim khoom

Cov neeg siv khoom xav tau

Siv tau qhov project specifications

Cov ntaub ntawv xa tuaj

Txhua API 5CT L80-1 khoom xa tuaj yog muab nrog cov ntaub ntawv zoo rau cov khoom siv taug qab.

Cov ntaub ntawv ib txwm muaj xws li:

Material Test Certificate (MTC)

Kev txheeb xyuas tus lej kub

Daim ntawv qhia txog tshuaj muaj pes tsawg leeg

Mechanical test results

Cov ntaub ntawv hardness test

Cov ntaub ntawv kho cua sov

NDT cov ntaub ntawv tshuaj xyuas

Dimensional soj ntsuam daim ntawv qhia

Xov xov tshuaj xyuas thiab ntsuas ntsuas

Ua kom tiav cov ntaub ntawv tso cai rau cov neeg siv khoom los txheeb xyuas qhov ua tau raws li API 5CT cov cai thiab tswj xyuas kev taug qab thoob plaws qhov kev ua tiav.

API 5CT L80-1 OCTG Hoobkas

process line

API 5CT L80-1 Casing yeeb nkab kuaj thiab tshuaj xyuas

test equipment

FAQ

API 5CT L80-1 txhais li cas?

API 5CT L80-1 yog cov pa roj carbon-manganese OCTG qib tsim raws li API Spec 5CT rau casing thiab tubing daim ntaub ntawv. Cov qib muab qhov tsawg kawg nkaus lub zog ntawm 80,000 psi (552 MPa) thiab yuav tsum tau tswj hardness ntawm siab tshaj 23 HRC (241 HBW). Lub npe "-1" yog hais txog hom 1 carbon-manganese version ntawm L80 tsev neeg.

API 5CT L80-1 puas haum rau kev pabcuam qaub?

API 5CT L80-1 feem ntau yog xaiv rau cov ntawv thov kev pabcuam qaub vim tias nws qhov yuav tsum tau ua kom tawv tawv yuav pab txo qis kev cuam tshuam rau sulfide kev ntxhov siab tawg (SSC). Txawm li cas los xij, kev tsim nyog yuav tsum raug ntsuas raws li qhov tseeb ntawm qhov chaw zoo thiab NACE MR0175 / ISO 15156 cov cai, suav nrog H₂S ib nrab siab, qhov kub thiab txias.

Qhov siab tshaj plaws hardness ntawm API 5CT L80-1 yog dab tsi?

Qhov siab tshaj plaws hardness ntawm API 5CT L80-1 yog:

23 HRC

241 HWB

Qhov kev txwv hardness no yog qhov yuav tsum tau ua API 5CT thiab yog ib qho ntawm qhov sib txawv tseem ceeb ntawm L80-1 thiab N80.

Qhov txawv ntawm API 5CT L80-1 thiab N80 yog dab tsi?

Qhov txawv tseem ceeb yog tswj hardness.

Ob qib muaj qhov zoo sib xws yield zog theem:

L80-1: 552–655 MPa

N80: 552–655 MPa

Txawm li cas los xij:

L80-1 yuav tsum muaj qhov siab tshaj plaws ntawm 23 HRC

N80 tsis muaj tib qhov yuav tsum tau muaj kev txwv hardness raws li API 5CT

Vim tias kev tswj qhov tawv tawv yog qhov tseem ceeb rau kev txo qis SSC kev raug mob, L80-1 feem ntau nyiam rau cov ntawv thov kev pabcuam qaub.

API 5CT L80-1 puas tuaj yeem tsim los ntawm ERW?

Yog lawm.

Ntawm cov qib L80 tsev neeg, L80-1 yog qib tso cai rau ob qho tib si seamless thiab ERW raug raws li API 5CT.

ERW L80-1 yuav tsum ua kom tau raws li qhov yuav tsum tau muaj rau:

Kev kho cua sov

Weld seam zoo

Kev tshuaj xyuas

Kev sim

Seamless L80-1 tseem yog cov khoom siv ntau tshaj plaws rau kev siv roj thiab roj tseem ceeb.

Kev kho cua sov dab tsi yuav tsum tau ua rau API 5CT L80-1?

API 5CT L80-1 yuav tsum tau quench-thiab-temper (Q&T) kev kho cua sov.

Cov txheej txheem txhim kho:

Lub zog sib xws

Toughness

Hardness tswj

Kev tiv thaiv rau SSC susceptibility

Cov khoom kawg yuav tsum ua kom tau raws li API 5CT cov cuab yeej cuab tam thiab hardness.

Dab tsi yog qhov sib txuas rau L80-1 casing thiab tubing?

Feem ntau API 5CT L80-1 casing kev sib txuas muaj xws li:

BTC (Butter Thread Casing)

STC (Short Xov Casing)

LTC (Long Thread Casing)

Kev sib txuas ntawm tubing muaj xws li:

EUE (Tshooj Sab Nraud Upset End)

NU (Tsis yog{0}} chim siab)

Rau siab -cov roj qhov dej siab los yog xav tau cov kev tsim khoom, cov roj zoo tshaj - nruj kev sib txuas nrog hlau - mus rau - cov ntsaws ruaj ruaj yuav raug xaiv.