Lub koom haum American Petroleum (API) categorizes threads raws li lawv daim ntawv thov (Casing, Tubing, lossis Drill Pipe). Cov qauv no feem ntau yog tswj hwm los ntawmAPI Spec 5B(rau Casing / Tubing) thiabAPI Spec 7-2(rau kev sib txuas ntawm lub xub pwg nyom / Laum Pipe).
Casing Xov (API 5CT)
Casing yog qhov loj - txoj kab uas hla cov yeeb nkab siv los ua kab lub qhov dej. Muaj peb qhov tseem ceeb API txuas rau casing:
STC (Short Thread Coupled):
Profile:8-puab (V-puab nrog puag ncig).
Yam ntxwv:Shorter kev koom tes ntev.
Siv:Qhov tob, qis- qhov dej nro qhov twg tus nqi yog qhov kev txhawj xeeb tseem ceeb.
LTC (Long Thread Coupled):
Profile:8 - puag.
Yam ntxwv:Kev sib koom ua ke ntev dua li STC, muab lub zog tensile zoo dua thiab tsis muaj zog.
Siv:Qhov kev xaiv "standard" rau nruab nrab - qhov tob tob.
BTC (Buttress Thread Coupled):
Profile:Trapezoidal (Square-ish).
Yam ntxwv:Tsim los tswj cov siab axial nro thiab compression. Lub ntsej muag tiaj tus tiv thaiv qhov "rub- tawm" uas muaj nyob rau hauv cov xov puag ncig.
Siv:Cov qhov dej sib sib zog nqus, cov hlua hnyav hnyav, lossis cov qhov dej kab rov tav.
Tubing Xov (API 5CT)
Tubing yog cov yeeb nkab me me tso rau hauv lub casing kom thauj cov roj / roj rau saum npoo.
EUE (Sab Nraud Upset Ending):
Profile:8 - puag.
Tsim:Qhov kawg ntawm cov yeeb nkab yog "hmoov" (ua tuab) kom cov xov tsis ua rau cov yeeb nkab phab ntsa tsis muaj zog.
Siv:Kev sib txuas ntawm tubing feem ntau. Siab sib koom ua ke muaj zog heev.
NUE (Tsis yog-Kev ntxhov siab kawg):
Profile:10 - puag ncig.
Tsim:Cov yeeb nkab kawg muaj qhov tuab tib yam li cov yeeb nkab lub cev.
Siv:Tsis tshua muaj niaj hnub no; siv hauv lub teeb- daim ntawv thov lub luag haujlwm uas tsis tas yuav muaj lub zog siab.
Drill Pipe Threads (API 7-2)
Paub liRotary Shouldered Connections (RSC), cov no yog tsim los daws qhov hnyav torque thiab kev sib hloov tas li.
NC (Numbered Connection):
Tus qauv niaj hnub (xws li NC38, NC50). Cov lej sawv cev rau lub suab diam.
Lawv muaj V-zoo li cov xov nrog 0.038 "los yog 0.050" hauv paus vojvoog kom txo tau kev ntxhov siab.
REG (Regular):
Feem ntau yog siv rau cov khoom siv tho thiab cov cuab yeej. Lawv muaj qhov ntse dua V-puab thiab yog tsim los rau siab - qhov chaw muaj kev ntxhov siab uas qhov chaw txwv.
IF (Internal Flush):
Tsim kom muaj txoj kab nruab nrab sab hauv (ID) ntawm kev sib txuas yog tib yam li cov yeeb nkab, tso cai rau cov av nkos du. (Feem ntau hloov los ntawm NC cov qauv sib npaug).
FH (Full Hole):
Muab qhov qhib loj los ntawm kev sib koom ua ke, feem ntau yog siv rau ntawm cov kav dej qub qub.
Kab yeeb nkab xov (API 5L)
LP (Line Pipe Xov):
Siv rau saum npoo kav, thauj kab, thiab manifolds.
Zoo ib yam li NPT (National Yeeb Nkab Xov) tab sis nrog API tshwj xeeb kam rau ua. Nws siv 60-degree V-xov xov nrog 1:16 taper.
Lub rooj sib piv
| Xov Qeb | Hom | Profile duab | Qhov zoo tshaj plaws rau ... |
| Casing | STC | Hloov | Tsawg- nqi, qhov dej ntiav |
| Casing | LTC | Hloov | Standard nruab nrab - qhov tob tob |
| Casing | BTC | Trapezoidal | Siab -nruj, qhov tob, lossis kab rov tav |
| Tubing | EUE | Hloov | Standard ntau lawm (siab zog) |
| Tubing | NUE | Hloov | Lub teeb- lub luag haujlwm tsim khoom |
| Laum Pipe | NC | V- Xov | Niaj hnub nimno drilling (siab torque) |
| Laum Pipe | REG | V- Xov | Drill bits thiab downhole cov cuab yeej |
GNEE API Xov Hoobkas
GNEE API OCTG Xov Test Equipments
GNEE API Threads daim ntawv pov thawj
FAQ
API 5B yog dab tsi?
API 5Byog tus txheej txheem technical uas txhais tau tias yuav ua li castsim, ntsuas, thiab tshuaj xyuascov threads ntawm oilfield kav (casing, tubing, thiab kab yeeb nkab).
Hauv cov ntsiab lus yooj yim, nws yog "rulebook" uas ua kom cov yeeb nkab ua nyob rau hauv ib lub Hoobkas yuav zoo kawg nkaus haum rau kev sib txuas ua ke hauv lwm qhov.
Nws npog dab tsi:
Qhov Loj:Cov duab kos, lub kaum sab xis, thiab cov hlau lead ntawm cov xov (xws li LTC, STC, BTC, thiab EUE).
Kev ntsuas:Yuav siv cov cuab yeej tshwj xeeb li cas (gauges) los xyuas seb cov xov puas raug.
Kev tshuaj xyuas:Qhov kev txwv tsis pub muaj xws li khawb, dents, lossis "tawm ntawm cov kab" xov.
Qhov txawv ntawm API 5B thiab 5CT yog dab tsi?
Txoj kev yooj yim tshaj kom nkag siab qhov txawv yog:API 5CT yog hais txog cov yeeb nkab, thaum API 5B yog hais txog Cov Xov.
1. API 5CT: Tus qauv "Pipe".
Nws tsom rau ntawmkhoom thiab kev tsim khoomntawm lub casing thiab tubing.
Nws npog dab tsi:Cov qib hlau (J55, N80, P110), tshuaj lom neeg muaj pes tsawg leeg, txhua yam muaj zog (nruj / tawg), kev kho cua sov, thiab cov yeeb nkab lub cev qhov ntev.
Analogy:Nws yog "daim ntawv qhia" rau cov hlau thiab "blueprint" rau cov yeeb nkab lub zog.
2. API 5B: Tus qauv "Thread".
Nws tsom rau ntawmgeometry thiab tshuaj xyuasntawm cov kev sib txuas ntawm qhov kawg ntawm cov kav dej.
Nws npog dab tsi:Xov duab (LTC, STC, BTC, EUE), xov suab, taper, txhuas, thiab yuav siv cov ntsuas ntsuas li cas.
Analogy:Nws yog "tus pas ntsuas" siv los xyuas kom meej cov xov raug txiav zoo kawg nkaus kom lawv tsis txhob xau lossis rub tawm.
Puas yog koj lub xov tooj BTC / LTC 100% hloov pauv nrog lwm hom API tus qauv?
Yog lawm, kiag li.
Vim tias peb cov BTC / LTC xov yog tsim thiab ntsuas nruj raws liAPI Spec 5Bcov qauv, lawv yog 100% sib hloov nrog lwm yam API- ntawv pov thawj kev sib txuas ntawm tib qhov loj thiab hom, tsis hais lub chaw tsim khoom.
Interchangeability yog ib qho ntawm cov kev cai tseem ceeb ntawm API daim ntawv tso cai qhov kev pab cuam los xyuas kom meej lub ntiaj teb no compatibility.
