Hauv kev lag luam roj thiab roj, casing yeeb nkab threads yog tswj hwm los ntawm covAPI 5 CTspecification. Kev xaiv cov xov zoo yog qhov tseem ceeb rau kev ua kom muaj kev ncaj ncees ntawm cov qauv thiab xau- pov thawj kev ua tau zoo ntawm lub qhov dej.
Muaj peb hom thawj ntawmAPI Standard Casing Xov, nrog rau qeb rauHwm Kev Sib Txuas.
Tsis paub meej seb puas yuav xaiv BTC lossis LTC rau koj qhov dej tob?Tham nrog peb pab neeg ua haujlwm rau cov xov tooj dawb xaiv cov lus qhia thiab kev txheeb xyuas lub zog.
STC (Short Round Thread Casing)
Tsim:Features rounded xov profile nrog8 threads ib nti (TPI). Nws muaj 1: 16 taper.
Yam ntxwv:Cov xov yog luv dua LTC. Nws yog qhov yooj yim tshaj plaws thiab kev lag luam threading kev xaiv.
Daim ntawv thov:Siv rau cov hlua casing luv uas qhov siab axial nro tsis yog qhov kev txhawj xeeb tseem ceeb. Nws haum rau qhov dej ntiav thiab tsis yog - ib puag ncig tseem ceeb.
LTC (Long Round Xov Casing)
Tsim:Muaj tib qhov sib npaug xov profile thiab 8 TPI raws li STC, tab sis covqhov ntev ntawm threaded seem yog ntev dua.
Yam ntxwv:Qhov nce xov kev koom tes muabsiab tensile zogthiab kev tiv thaiv zoo dua rau rub lub zog piv rau STC.
Daim ntawv thov:Ib hom xov ntau tshaj plaws rau nruab nrab - qhov tob tob. Nws muaj qhov sib npaug zoo ntawm lub zog thiab tus nqi rau cov txheej txheem siab.
BTC (Butter Thread Casing)
Tsim:Nta atrapezoidal (square -txiav)xov profile es tsis sib npaug. Nws feem ntau muaj5 threads ib nti.
Yam ntxwv:Tsim los tuavsiab axial nro thiab compression loads. Lub square profile tso cai rau cov xov kom "xauv" ua ke zoo dua hauv qhov hnyav. Nws kuj muab cov dej xau zoo dua li cov xov puag ncig.
Daim ntawv thov:Cov qauv kev lag luam rau cov qhov dej sib sib zog nqus, siab - ib puag ncig siab, thiab cov hlua ntev ntev uas qhov hnyav ntawm cov yeeb nkab raug tshem tawm hauv lub qhov yog qhov loj heev.
Hwm Kev Sib Txuas
Tsim:Cov no yog cov qauv tsim tshwj xeeb (xws li VAM, TenarisHydril, lossis Hunting) uas feem ntau mus dhau API cov qauv.
Yam ntxwv:Lawv feem ntau featurehlau-rau- hlau foob(tshwj tsis yog tsuas yog cia siab rau xov cuam tshuam thiab dope) thiab tshwj xeeb torque lub xub pwg nyom. Lawv tau tsim los ua "Gas-Tight."
Daim ntawv thov:Siv nyob rau hauv HPHT (High Pressure, High Temperature) qhov dej, kab rov tav drilling, ntug dej hiav txwv dej, thiab cov qhov dej uas muaj
H2SH2S
(Sour Service) qhov twg los xij tuaj yeem ua rau muaj kev puas tsuaj loj.
Summary Comparison Table
| Xov Hom | Lub Npe | Xov Profile | Threads Per Inch | Qhov zoo tshaj plaws rau ... |
| STC | Luv Round | Rounded | 8 TSI | Qhov dej ntiav, pob nyiaj siv - phooj ywg |
| LTC | Ntev Round | Rounded | 8 TSI | Nruab nrab qhov tob, siab dua |
| BTC | Npuag | Trapezoidal | 5 TSI | Qhov dej sib sib zog nqus, hnyav hnyav, siab siab |
| Hwm | - | Ntau yam | Ntau yam | Gas-tight, HPHT, Offshore |
Yuav xaiv li cas?
Qhov tob & Nyhav:Yog tias koj dai ib txoj hlua ntev, hnyav,BTCyog nyiam rau nws load-bearing peev.
Siab:Rau siab - lub qhov dej siab,Hwmthreads feem ntau yuav tsum tau ua kom muaj roj- nruj.
Tus nqi:Rau lub qhov dej los yog qhov dej ntiav,STClos yogLTCyog cov nqi ntau tshaj -kev xaiv zoo.
Ib puag ncig:Nyob rau hauv ib puag ncig corrosive, kev xaiv ntawm xov yog feem ntau ua ke nrog cov qib steel tshwj xeeb (xws liL80 los yog C90) thiab siab - zoo xov plating (xws li tooj liab lossis tin).
API Coupling Hoobkas
FAQ
Casing yeeb nkab xov yog qhov zoo tshaj plaws rau cov qhov dej tob?
Hauv kev sib sib zog nqus- ua haujlwm zoo,BTC(Butter Thread) yog qhov kev xaiv zoo tshaj plaws hauv API qauv; nws cov qauv trapezoidal xa cov kev sib txuas tshwj xeeb lub zog, ua haujlwm tau zoo nrog lub zog ntev ntev tensile thiab nws tus kheej - hnyav tsim los ntawm qhov sib sib zog nqus ntev - zoo tubular hlua. Hloov pauv, rau ultra- qhov dej tob uas ua rau muaj kev kub ntxhov siab heev-tshwj xeeb tshaj yog cov uas muaj cov siab -siab gases-Premium Connections featuring metal-to-metal sealing capabilities are the preferred choice, assurance gass- tight kev nyab xeeb tshaj plaws
API 5CT xov txheem rau STC, LTC, thiab BTC yog dab tsi?
API 5CT casing xov cov qauv feem ntau ua raws li API Spec 5B specifications: ob qho tib si STC (Short Round Thread) thiab LTC (Long Round Xov) siv ib puag ncig "V" xov profile nrog 8 threads ib nti thiab taper ntawm 1:16; Qhov tseem ceeb, LTC muaj lub zog tensile zoo dua piv rau STC los ntawm kev tsim txiaj ntawm nws cov xov ntev ntev. Hloov pauv, BTC (Buttress Thread) ntiav cov qauv trapezoidal nrog 5 threads ib nti, tshwj xeeb tsim los tiv thaiv lub zog tensile ntev thiab tsim rau hnyav -cov yeeb nkab txoj hlua hauv qhov tob tob. Tag nrho peb hom xov ua tiav ob qho tib si kev sib txuas thiab kev sib khi los ntawm kev cuam tshuam kev sib tshuam, yooj yim los ntawm daim ntawv thov API xov compound.
