Ob leegLTC (Long Threaded thiab Coupled)thiabBTC (Tshooj Threaded thiab Coupled)yog API 5CT tus qauv sib txuas siv rau casing hauv kev lag luam roj thiab roj. Thaum lawv ob leeg tau siv dav, lawv muaj qhov sib txawv tseem ceeb hauv xov geometry, sib koom ua ke, thiab daim ntawv thov.
Xav tau ib txoj hlua tag nrho?Tau txais cov luv nqi ntawm LTC / BTC cov kav dej, cov txuas txuas, thiab cov khoom tiv thaiv.
Kev sib piv ntawm lub cev (Xov tooj Profile)
| Feature | LTC (Long Xov) | BTC (Butter Thread) |
| Xov Zoo | Rounded (V-puab)nrog puag ncig crests thiab keeb kwm. | Trapezoidal (Square -zoo li)nrog ib tug flat load flank. |
| Threads per Inch (TPI) | 8 Xovib nti (8-RD). | 5 Xovib nti. |
| Kev Pom Kev Zoo | Zoo li tus qauv "screw" xov tab sis ntev dua STC. | Zoo li flatter thiab "stepped" zoo li lub davhlau ntawm ntaiv. |
Mechanical Performance (Qhov txawv ntawm Core)
Joint Strength (Tensile Capacity):
LTC:Nws muaj zog tensile nruab nrab. Vim nws yog V- zoo li tus xov, nyob rau hauv axial nruj nreem, cov xov tuaj yeem "dhia" lossis plam tawm ntawm qhov sib txuas (lub npe hu uarub- tawm).
BTC:Nws muaj zog tensile siab heev. Cov duab trapezoidal xauv cov xov ua ke kom ruaj ntseg dua. BTC sib koom ua ke lub zog feem ntau yuav luag sib npaug ntawm lub zog ntawm cov yeeb nkab lub cev nws tus kheej.
Torque Resistance:
LTC:Tsawg torque kuj. Nws tsis yog tsim los rau kev sib hloov thaum lub sij hawm drilling los yog siab - torque pleev.
BTC:Siab dua torque kuj. Lub tiaj xov profile tso cai rau nws los tswj ntau qhov kev sib hloov thiab khoov kev ntxhov siab piv rau cov xov puag ncig.
Leak Resistance:
Ob leeg tso siab rauxov dope(sealant) sau qhov khoob ntawm cov xov.
LTC feem ntau muaj cov kua nplaum me ntsis zoo dua li BTC hauv cov qauv txheej txheem vim tias 8- cov xov sib txuas tsim ib txoj hauv kev rau cov kua dej ntau dua, tab sis tsis suav tias yog "gas-tight."
Daim ntawv thov Scenario
Thaum siv LTC:
Nruab nrab- Qhov tob tob:Feem ntau siv rau hauv qhov dej ntsug ntawm qhov tob nruab nrab (piv txwv li, 2,000m txog 4,000m).
Hom Qib:Feem ntau siv nrog J55, K55, thiab N80.
Kev lag luam:Nws yog pheej yig dua BTC thiab txaus rau feem ntau cov qauv roj thiab dej qhov dej.
Thaum siv BTC:
Deep/Ultra-Deep Wells:Qhov tseem ceeb rau cov hlua ntev ntev uas qhov hnyav ntawm cov yeeb nkab tsim cov axial nro loj heev.
Siab - Qib Siab:Txuj rau P110, Q125, thiab lwm yam qib siab - ua tau zoo.
Deviated Wells:Siv nyob rau hauv qhov dej uas cov yeeb nkab yuav muaj kev khoov los yog kev sib hloov me ntsis.
Summary Comparison Table
| Feature | LTC (Long Round) | BTC (Buttress) |
| Txuj | API 5B / 5CT | API 5B / 5CT |
| Tensile zog | Nruab nrab | Siab |
| Kev sib khi | Cov kua nplaum zoo | Nruab Nrab Liquid Foob |
| Torque Capacity | Tsawg | Nruab nrab mus rau siab |
| Nqe | qis | Siab dua |
| Qhov zoo tshaj plaws siv rau | Txheem ntsug qhov dej | Sib sib zog nqus, hnyav casing hlua |
GNEE API Xov Txheej Txheej Kab
GNEE API Xov Test Equipments
GNEE API Xov Certificate
FAQ
Dab tsi yog BTC xov?
BTCsawv rauButtress Threaded thiab Coupled. Nws yog qhov siab -lub zog API- tus qauv kev sib txuas siv rau casing hauv kev lag luam roj thiab roj.
Cov yam ntxwv tseem ceeb muaj xws li:
Tsim:Nws nta atrapezoidal (square -zoo li)xov zoo nrog 5 threads ib nti.
Lub zog:Nws muaj qhov tsis tshua muajsiab tensile zog, txhais tau hais tias qhov kev sib txuas yog ze li ntawm cov yeeb nkab lub cev nws tus kheej.
Daim ntawv thov:Nws yog tus qauv kev lag luam rauqhov dej tob, siab - ib puag ncig siab, thiab cov hlua hnyav hnyav qhov twg cov qauv puag ncig (LTC/STC) yuav ua tsis tau raws li cov yeeb nkab qhov hnyav.
Kev ua tau zoo:Nws ua haujlwm dabtsi yog khoov thiab axial loads zoo dua li cov xov puag ncig, ua rau nws haum rau qib siab -lub zog zoo liP110.
LTC xov yog dab tsi?
LTCsawv rauNtev Threaded thiab Coupled. Nws yog API-txheej txheem casing kev twb kev txuas featuring ib8- round xovprofile (8 threads ib nti).
Cov yam ntxwv tseem ceeb:
Lub zog:Qhov "Long" threaded seem muab kev koom tes ntau dua li STC (Short Thread), uas ua rausiab tensile zogtxhawb nqa cov hlua hnyav dua.
Sealing:Nws tso siab rau qhov cuam tshuam haum thiab xov dope (sealant) los tsim cov kua- nruj seal.
Daim ntawv thov:Nws yog tus qauv kev lag luam raunruab nrab - qhov tob tob, muab qhov sib npaug zoo tag nrho ntawm cov khoom siv hluav taws xob muaj zog thiab tus nqi -kev ua tau zoo.
