API 5CT Z140Yog lub siab - lub zog qib ntawm cov hlau casing thiab tubing teev nyob rau hauv API (American Petroleum lub koom haum) tshwj xeeb 5ctification 5ctification. Tus qauv no tswj hwm kev tsim khoom ntawm xov threing thiab tubing siv hauv cov roj thiab roj zoo.
Cov yam ntxwv tseem ceeb:
Ultra - lub zog siab:Z140 yog ib qho ntawm cov qib siab tshaj plaws nyob rau hauv API 5ct txheem, nrog ib qho kev teev tseg muaj zog ntawm 140,000 psi (965 mpa). Qhov no ua rau nws haum rauUltra -} Cov Dej Duaj, high - qhov siab / siab- kub (HPHT) Wells, thiab lwm qhov kev cuam tshuam cov chaw nyob uas vau, tawg, thiab lub tensile loads yog huab.
Quenched thiab tempered (Q & T):Yuav kom ua tiav lub zog siab no thiab tswj kev ua kom zoo tougness, Z140 kav siv cov txheej txheem kev txiav txim siab thiab npau taws.
Tsawg daim ntawv thov nyob rau hauv Sour kev pab:Vim nws lub zog siab heev thiab hardness, qauv Z140 feem ntauTsis pom zoo rau Sour kev pabcuam(ib puag ncig muaj cov sulrodor, h₂s) vim yog nws muaj kev paub zoo rau kev ntxhov siab sulfide kev tawg (SSC). Yog tias siv nyob rau hauv xws li ib puag ncig, nws yuav tsum tau xaiv cov txheej txheem ceev, cov txheej txheem kev tsim khoom tshwj xeeb, thiab tswj kev tawv me me, feem ntau teev los ntawm tus neeg siv kawg.
Nws yog ib qho tseem ceeb kom nco ntsoov tias thaum Z140 tau suav nrog cov khoom siv ua ntej ntawm API 5CT, nws tautshem tawm los ntawm qhov tseeb tshiab ntawm tus qauv (piv txwv li, API 5CT 9th tsab)Cov. Txawm li cas los xij, nws tseem tuaj yeem tsim tau raws li a"Tsis {- api" lossis "qib"Los ntawm cov millic hlau raws li ntawm cov neeg siv khoom tshwj xeeb uas feem ntau siv API qub cov cai.
Cov khoom lag luam thiab cov rooj
Rooj 1: Cov khoom siv kho tshuab ntawm API 5CT Z140
| Ntiag tug | Tus nqi | Ib yam | Sau ntawv | |
|---|---|---|---|---|
| Teem nqi | Z140 | - | Lub "Z" Prefix qhia txog qhov siab - txoj sia. | |
| Teev cov txiaj ntsig tsawg kawg nkaus zog (smys) | 140,000 | psi | 965 MPa | |
| Yam tsawg kawg tensile lub zog | 150,000 | psi | 1035 mpa | Cov yeeb nkab yuav tsum tau tiv tsawg tsawg kawg no ntau ntau tensile kev ntxhov siab. |
| Qhov ntau tshaj plaws tensile lub zog | N / A (Saib Daim Ntawv 1) | psi | Rau siab - lub zog kawm tau zoo li qhov no, qhov siab tshaj plaws feem ntau tau pom zoo ntawm cov tsim lag luam thiab cov neeg yuav khoom muaj qhov nyuaj. | |
| Tawm los muaj zog | 140,000 - 175,000 | psi | 965 - 1207 mpa | Qhov tseeb tawm lub zog zog yuav tsum poob rau hauv cov kab no. |
| Hardness (qhov ntau tshaj plaws) | 42.0 | Hrc | Rockwell Cnplai. Qhov no yog ib qho tseem ceeb heev los tswj SSC muaj kev pheej hmoo. | |
| Elongation (yam tsawg kawg nkaus) | Xa mus rau Mis | % | API 5CT qhia meej qhov tsawg kawg nkaus uas yog nyob ntawm lub kaum tensile kuaj. |
NCO TSEG 1:Lub zog tshaj plaws tensile muaj zog tsis tau teev nyob rau hauv API 5ct rau txhua qib kawm tab sis yog feem ntau {{2} {tensile ratio (y / t piv). Rau ultra {{{}} high- lub zog yog qhov ntau tshaj plaws, ib qho kev tshaj plaws
Rooj 2: Cov tshuaj lom neeg raug nplua (hnyav%)
API 5CT tsis yuam kom muaj ib qho tshuaj lom neeg tshwj xeeb tab sis teeb tsa cov kev xav tau rau cov neeg kho tshuab thiab ua tau zoo. Cov chemistry yog tsim los ntawm cov tuam txhab kom tau raws li cov kev xav tau. Cov kws kho mob ib txwm muaj rau Z140 yuav yog qhov qis -} cov hlau alleoy.
| Lub ntsiab | Cov Khoom Nquag Yog | Lub hom phiaj |
|---|---|---|
| Carbon (c) | 0.25 - 0.35 | Thawj ntxiv dag zog. |
| Manganese (mn) | 0.80 - 1.20 | Ua kom muaj zog zog thiab ua tsis tau. |
| Silicon (si) | 0.15 - 0.35 | Deagidizer thiab ntxiv dag zog rau cov ferrite. |
| Chromium (cr) | 0.80 - 1.50 | Nce cov hardenability, lub zog, thiab corrosion tsis kam. |
| Molybdenum (mo) | 0.15 - 0.30 | Txhim kho cov khoom nyuaj thiab lub zog, tshwj xeeb tshaj yog thaum muaj kub. |
| Niobium (nb) / Vanadium (V) | Cov Nqi | Cov nplej uas rov qab thiab kev sim ua ntej. |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.015 | Impurity, khaws cia tsawg los txhim kho kev nruj. |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.005 | Impurity, khaws cia tsawg los txhim kho kev nruj thiab txo tus mob SSC. |
Nco tseg:Nov yog tus sawv cev chemical. Qhov tseeb muaj pes tsawg leeg yog tus qauv rau txhua tus chaw tsim khoom.
Cov Lus 3: Diatensional thiab Cov Ntaub Ntawv Mass (Piv Txwv rau qhov ntau thiab tsawg)
Cov taub sab nraud sab nraud, phab ntsa thickness, thiab qhov hnyav yog teev nyob rau hauv API 5ct. Hauv qab no yog cov piv txwv rau cov dab ntau thiab tsawg.
| Nominal loj & nyhav (lb / ft) | Sab nraud ntawm lub taub (hauv) | Sab hauv lub taub (hauv) | Phab Ntsa Thickness (Hauv) | Ntsiag -} kawg loj (lb / ft) | Yeeb Nkab Lub Tshuab Pom Lub Zog (Luj LBF) |
|---|---|---|---|---|---|
| 7 ", 29.00 lb / ft | 7.000 | 6.184 | 0.408 | 29.00 | 1.33 |
| 7 ", 32.00 lb / ft | 7.000 | 6.094 | 0.453 | 32.00 | 1.46 |
| 9-5 / 8 ", 40.00 lb / ft | 9.625 | 8.835 | 0.395 | 40.00 | 1.87 |
| 9-5 / 8 ", 47.00 lb / ft | 9.625 | 8.681 | 0.472 | 47.00 | 2.21 |
| 10-3 / 4 ", 51.00 lb / ft | 10.750 | 9.850 | 0.450 | 51.00 | 2.39 |
Cov lus piav qhia ntawm cov yeeb nkab lub cev tau muab lub zog:Qhov no yog theoretical axial thauj mus los yuav tau tawm lub raj yeeb, suav raws li: smys x hla - ntu ntu. Qhov tseem ceeb hauv lub rooj ua rau pom lub nra hnyav - cov kabmob muaj txiaj ntsig ntawm z140.
Cov kev txiav txim siab tseem ceeb thiab cov ntawv thov
Cov Ntawv Thov:
Ultra - diam av ntsug thiab qhia directional
Casing cov hlua hauv deepwater thiab hpht wells
Lineric tshuab hauv cov aav nrog cov kev kub siab siab
Cov chaw uas yuav tsum tau poob siab thiab tawg
Kev sib tw thiab cov kev txwv:
Sulfide kev ntxhov siab tawg (SSC):Muaj kev phom sij siab. Tsis yog rau kev pabcuam siv txheem.
Taus:Yuav tsum tau muaj qis heev qis - kub ua kom tiv thaiv brittle backstre.
Vuam thiab tuav:Cov txheej txheem tshwj xeeb yog tseev kom muaj rau kev siv vuam txuas ntxiv vim yog cov pa roj carbon ntau thiab lub zog. Kev saib xyuas yuav tsum tau ua thaum tuav kom tsis txhob puas saum npoo uas tuaj yeem ua raws li kev ntxhov siab cov kev ntxhov siab.
Muaj Txaus:Raws li kev rho tawm API qib, nws yog ib qho khoom tshwj xeeb nrog cov hmoov txhuas ntev dua thiab tus nqi siab dua.
Hauv cov ntsiab lus xaus,API 5CT Z140yog qhov tshwj xeeb, ultra - high {1} {1} Lub zog uas tsim rau qhov kev ua tau zoo tshaj plaws uas yog qhov kev txhawj xeeb tshuab yog qhov kev txhawj xeeb ntawm kev txhawj xeeb. Nws cov kev siv yuav tsum tau muab cov kev tshuaj xyuas cov dej num kom zoo thiab cov khoom siv txwv.
