OCTG Couplingsyog luv luv ntawm hnyav- cov yeeb nkab phab ntsa nrog cov xov sab hauv siv los txuas ob tus tib neeg cov pob qij txha ntawm casing lossis tubing. Hauv kev lag luam roj thiab roj, txij li cov kav dej feem ntau yog tsim los ntawm qhov ntev li ntawm 9 txog 12 meters (Range 2), cov txuas txuas ua raws li "choj" uas tso cai rau cov kav dej no los ua ib txoj hlua txuas ntxiv mus tob rau hauv lub ntiaj teb.
Hom ntawm OCTG Couplings
Couplings yog categorized los ntawm hom yeeb nkab uas lawv txuas thiab cov xov profile siv.
A. Casing Couplings (API 5CT)
STC (Short Round Xov):Siv rau luv luv casing hlua.
LTC (Long Round Xov):Tsim los rau cov hlua ntev dua thiab siab dua.
BTC (Tebchaws)Trapezoidal threads rau siab tshaj plaws axial load peev xwm nyob rau hauv qhov tob tob.
B. Tubing Couplings (API 5CT)
EUE (Sab Nraud Upset End):Kev sib txuas ntawm tubing feem ntau. Lub coupling txuas cov kav dej nrog thickened ( chim siab) xaus rau lub zog siab tshaj plaws.
NUE (Tsis yog-Upset End):Siv rau kev siv sib dua qhov twg cov yeeb nkab kawg tsis thickened.
Yam yuavtsum tau kawm uantej: Qib Muas
Ib txoj cai tseem ceeb tshaj plaws hauv OCTG kev yuav khoom yogQib Parity.
A j55 cevyuav tsum txuas nrog aJ55 sib txuas.
Ibl80 cevyuav tsum muajL80 sib txuas.
Kev siv qhov qis dua -qib coupling yog ib daim ntawv qhia rau kev puas tsuaj loj. Ntawm GNEE, peb xyuas kom meej tias txhua qhov sib txuas yog tsim los ntawm tib lub "coupling stock" lossis seamless yeeb nkab raws li qib tau txiav txim, nrog rau tag nrho cov cua sov-number traceability.
daim ntawv thov ntawmOCTG Couplings
Kev tsim kho Wellbore (Casing Couplings)
Casing couplings yog siv los txuas cov kav loj - txoj kab uas hla ntawm qhov borehole. Lawv thawj daim ntawv thov yog muab cov qauv kev ruaj ntseg.
Nto Casing:Couplings txuas cov hlua uas tiv thaiv cov dej tsis huv los ntawm kev sib kis thiab tiv thaiv cov av saum npoo los ntawm kev sib tsoo.
Intermediate Casing:Siv rau hauv qhov dej tob kom cais cov siab - thaj chaw siab. Cov couplings (feem ntauBTClos yogLTC) yuav tsum tiv taus lub ntiaj teb loj kawg nkaus siab thiab qhov hnyav ntawm ntau txhiab meters ntawm cov yeeb nkab dai hauv qab lawv.
Production Casing:Cov couplings ntawm no ua raws li qhov kawg ntawm cov txheej txheem thaiv, ua kom lub qhov dej tseem qhib rau tag nrho lub neej ntawm qhov project (feem ntau 20+ xyoo).
Hydrocarbon Extraction (Tubing Couplings)
Tubing yog cov yeeb nkab uas coj cov roj thiab cov pa mus rau qhov chaw. Nws cov couplings muaj cov txheej txheem sib txawv ntawm daim ntawv thov tseem ceeb.
Siab -Pressure Flow:Tubing couplings (feem ntauEUE - Kev ntxhov siab sab nraud) yog tsim los rau kev hloov pauv siab. Lawv yuav tsum xyuas kom muaj qhov xau- pov thawj foob kom cov roj / roj tsis khiav mus rau hauv "annulus" (qhov chaw nruab nrab ntawm tubing thiab casing).
Kev Ua Haujlwm Kev Ua Haujlwm:Vim tias cov raj qee zaum rub tawm rau kev saib xyuas, cov couplings yog tsim los rau ntau lub voj voog "ua- thiab- tawg" yam tsis muaj xov hnav (galling).
Coupling Type vs. Application
| Coupling Xov | Daim ntawv thov tseem ceeb | Vim Li Cas Qhov Kev Sib Txuas? |
| STC (Short Round) | Khawv koob | Economy, siv qhov nro tsawg. |
| LTC (Long Round) | Deep Casing | Cov xov ntev dua muab ntau dua rub- tawm lub zog. |
| BTC (Buttress) | Heavy Casing Strings | Trapezoidal threads tuav loj axial loads. |
| EUE (Kev ntxhov siab sab nraud) | Tubing ntau lawm | Thickened xaus muab qhov siab tshaj plaws kev sib koom ua ke. |
| Kev sib txuas hwm hwm | Gas Wells / HPHT | Hlau-rau- hlau foob rau roj- nruj kev cia siab. |
Technical Sib piv Table
| Feature | Tubing Coupling (EUE) | Casing Coupling (BTC) |
| Txuj | API 5CT / 5B | API 5CT / 5B |
| Qhov Loj | 2-3/8", 2-7/8", 3-1/2" | 4-1/2 "mus rau 20" |
| Sab hauv xov | 8-Rov xov | Trapezoidal (Lub Taub Hau) |
| Nto tiav | Phosphated | Varnish/phosphate |
| Lub luag haujlwm | Siab - kua roj foob | Qhov siab tshaj plaws kev nro |
GNEE API 5CT OCTG Coupling txheej txheem kab
GNEE API 5CT OCTG Coupling Test Equipments
GNEE API 5CT OCTG Coupling daim ntawv pov thawj
FAQ
Kuv puas tuaj yeem yuav cov couplings cais los ntawm cov kav dej?
Yog lawm, GNEE muab ob qho tag nrho cov yeeb nkab teeb (nrog cov couplings twb "lub zog-tight" ntawm ib kawg) thiab ib tus neeg txuas rau kev kho lossis cov khoom muag.
Dab tsi yog qhov txawv ntawm "tes-Tight" thiab "Power-Tight" ua-up?
"tes-tight" txhais tau hais tias lub coupling yog screwed ntawm tes. "Power-tight" txhais tau hais tias nws yog nruj rau ib qho tshwj xeeb torque ntawm lub Hoobkas siv lub tshuab.
Vim li cas feem ntau cov couplings phosphated?
Phosphating tiv thaiv xeb thiab, qhov tseem ceeb tshaj, ua cov roj nplua nyeem kom tsis txhob muaj lub qhov txhab thaum cov yeeb nkab raug ntsia hlau rau hauv qhov sib txuas ntawm lub rig.
Puas yog xim -coding yuav tsum tau rau couplings?
Yog lawm, rau API 5CT. Piv txwv li,J55muaj ib lub paj ntsuab,K55muaj ob, thiabN80muaj kab liab. Qhov no tiv thaiv kev sib tsoo tsis sib xws-ups ntawm qhov chaw rig.
Koj puas txhawb qhov thib peb -kev tshuaj xyuas rau kev sib txuas?
kiag li. Peb zoo siab tos txais SGS lossis BV los tshuaj xyuas cov xov qhov ntev, kev tshuaj xyuas cov khoom sib nqus (MPI) rau cov kab nrib pleb, thiab kev txheeb xyuas qib.
