Hauv kev lag luam roj thiab roj, cov xov casing yog cov kev sib txuas tseem ceeb uas tuav tag nrho cov qhov dej ua ke. Cov xov no tau muab faib ua ob pawg:API Standard ConnectionsthiabHwm Kev Sib Txuas.
Tsis txhob pheej hmoo qhov downhole tsis ua haujlwm.Thov ib daim ntawv qhia kev ncaj ncees thiab tensile zog rau peb cov kev sib txuas LTC thiab BTC.
API Standard Connections
Cov no yog standardized los ntawm covLub koom haum American Petroleum (API 5CT). Lawv raug nqi -zoo, muaj dav, thiab siv nyob rau hauv feem ntau cov pa dej.
STC (Short Threaded thiab Coupled)
Xov Profile:8-txheej xov (8 threads ib nti nrog rounded crests thiab cov hauv paus hniav).
Yam ntxwv:Shorter xov engagement.
Qhov zoo tshaj plaws rau:Puag, qis- qhov dej siab thiab qhov chaw qhov chaw siab tsis muaj kev txhawj xeeb.
Kev txwv:Tsawg tensile zog; nquag "rub- tawm" hauv qab hnyav.
LTC (Long Threaded thiab Coupled)
Xov Profile:8-round thread (tib yam li STC tab sis ntev dua).
Yam ntxwv:Ntau "cov hniav" koom nrog ntawm cov yeeb nkab thiab coupling.
Qhov zoo tshaj plaws rau:Nruab nrab- qhov tob tob. Nws muab lub zog tensile zoo dua li STC, ua rau nws yog qhov kev xaiv ntau tshaj plaws rau cov txheej txheem ntau lawm.
Kev txwv:Tsis muaj roj- nruj; tso siab rau cov xov dope (sealant) kom tsis txhob xau.
BTC (Butter Threaded thiab Coupled)
Xov Profile:Trapezoidal (square-zoo li) xov zoo li.
Yam ntxwv:Zoo heev load-cov kabmob muaj peev xwm. Cov xov xauv ua ke los tuav cov axial nro loj heev.
Qhov zoo tshaj plaws rau:Cov qhov dej tob, siab - ib puag ncig siab, thiab cov hlua hnyav hnyav. Lub zog sib koom ua ke yuav luag sib npaug ntawm cov yeeb nkab lub cev nws tus kheej.
Kev txwv:Txawm hais tias muaj zog dua cov xov puag ncig, nws feem ntau tseem tsis suav tias yog 100% roj- nruj rau siab - cov roj qhov dej.
Hwm Kev Sib Txuas
Kev sib txuas hwm yog cov qauv tsim los ntawm cov tuam txhab tshwj xeeb (xws li Tenaris, Vallourec, lossis VAM®). Lawv siv thaum API threads tsis tuaj yeem ua haujlwm zoo heev.
Hlau -rau- Hlau Seal Txuas
Nws ua haujlwm li cas:Tsis zoo li API threads uas foob siv roj (xov dope), hwm xov muaj lub xub pwg hlau machined uas tsim lub cev foob.
Cov txiaj ntsig:Muab100% roj- nruj nruj, uas yog qhov tseem ceeb rau siab -cov pa roj qhov dej.
Flush thiab Semi-Flush Connections
Tsim:Cov no tshem tawm lossis txo qhov "bulge" ntawm kev sib txuas, ua rau sab nraud txoj kab uas hla (OD) ntawm kev sib txuas yuav luag tib yam li cov yeeb nkab.
Qhov zoo tshaj plaws rau:"Slim-qhov" qhov drilling qhov kev tshem tawm ntawm cov hlua casing yog nruj heev.
Siab -Torque Connections
Cov txiaj ntsig:Tshwj xeeb tsim los tig thaum lub sij hawm drilling.
Qhov zoo tshaj plaws rau:Kab rov tav qhov dej thiab txuas ntxiv - mus txog qhov drilling qhov twg cov yeeb nkab yuav tsum muaj zog sib tw siab.
Summary Comparison Table
| Xov Hom | Profile | Lub zog | Hom foob | Daim ntawv thov zoo tshaj plaws |
| STC | Hloov | Tsawg | Xov Dope | Nto / Nto Casing |
| LTC | Hloov | Nruab nrab | Xov Dope | Nruab nrab- Qhov tob Vertical Wells |
| BTC | Trapezoidal | Siab | Xov Dope | Deep Wells / High Tension |
| Hwm | Muaj tswv | Ultra-High | Hlau -rau-Hlau | Siab -Npaum Gas / Kab rov tav Wells |
GNEE API Threads txheej txheem kab
GNEE API Xov test equipments
GNEE API Xov Certificate
FAQ
Lub casing xov yog dab tsi?
A casing xovyog cov ntsia hlau-zoo li cov khoom sib txuas ntawm qhov kawg ntawm cov kav dej siv hauv cov roj thiab cov qhov dej.
Nws lub luag haujlwm tseem ceeb yog:
Kev sib txuas:Nws tso cai rau ib tus neeg cov yeeb nkab sib txuas (feem ntau yog 30-40 ko taw ntev) yuav tsum tau screwed ua ke los ua ib qho txuas ntxiv "casing hlua" uas tuaj yeem ncav cuag mais hauv av.
Load Support:Nws yuav tsum txhawb nqa qhov hnyav ntawm tag nrho cov yeeb nkab hlua dai hauv qab nws (lub zog tensile).
Sealing:Nws tsim cov pa tawm- pov thawj foob los tiv thaiv cov kua dej (roj, roj, lossis dej) los ntawm kev khiav mus rau ib puag ncig ib puag ncig.
Daim ntawv tag nrho ntawm BTC xov yog dab tsi?
Daim ntawv puv ntawmBTCxov isButtress Threaded thiab Coupled.
Nws yog API-tus qauv siab- lub zog sib txuas siv rau casing hauv kev lag luam roj thiab roj, muaj covtrapezoidal (square -zoo li)xov zoo tsim los lis hnyav tensile loads thiab hnyav yeeb nkab hlua.
