Laum lub cevKev sib txuas tau raug paub hauv API cov qauv raws liRotary Shouldered Connections (RSC). Tsis zoo li casing (STC/LTC) uas tso siab rau cov xov cuam tshuam rau kev sib khi, laum cov yeeb nkab txuas txuas ntawmhlau-rau- hlau tiv ntawm lub xub pwg nyom. Cov xov tsuas yog siv los koom ua ke.
Nrhiav rau siab -cov cuab yeej ua haujlwm sib koom ua ke ntawm tus nqi Hoobkas?Tau txais ib daim ntawv ceev ceevntawm API 7-1 Drilling Connections Hnub no!
Rotary Shouldered Connections (RSC)
Cov no yog siv rau covxyaum txoj hlua(drill yeeb nkab, laum dab tshos, thiab hnyav- hnyav laum yeeb nkab). Lawv tau tsim los tswj kev sib hloov huab cua (torque) thiab khoov.
NC (Numbered Connection):Tus qauv niaj hnub (xws li NC38, NC50).
REG (Regular):Siv feem ntau rau cov khoom siv laum thiab cov cuab yeej uas lub taub sab hauv tsis tseem ceeb.
IF (Internal Flush):Tsim kom lub hauv paus ntawm cov yeeb nkab zoo kawg nkaus du kom tso cai rau cov kua dej zoo dua.
FH (Full Hole):Ib qho qauv qub siv rau cov tho yeeb nkab qhov ntau thiab tsawg.
API Laum Pipe Txuas Txuas (RSC) Core Parameter Table
| Hom kev sib txuas | Xov Form | Threads per Inch (TPI) | Taper | Lus hais |
| NC (Numbered) | V-0.038R | 4 | 1 :6 o4: | Cov txheej txheem kev lag luam niaj hnub(eg, NC38, NC 50) |
| IF (Internal Flush) | V-0.038R | 4 | 1:6 | ID ntais cov yeeb nkab lub cev rau cov dej ntws tsawg |
| REG (Regular) | V-0.040 / V-0.050 | 4o5 ib | 1:4o 6 | Feem ntau siv raulaum khoomthiab cov cuab yeej |
| FH (Full Hole) | V-0.040 / V-0.050 | 4 | 1:4 | Cov qauv qub; feem ntau hloov los ntawm NC |
Parameter Paub meej
Cov ntawv xov xwm
API "V- xov" rau drilling muaj kev hloov pauv feem ntau raws li lub hauv paus vojvoog kom txo tau kev ntxhov siab:
V-0.038R:Nta ib puag ncig hauv paus. Siv rauNCthiabIFkev sib txuas; muab siab qaug zog.
V-0.040:Flat crest thiab sharper paus. Feem ntau pom ntawmREGkev sib txuas.
V-0.050:Daim ntawv sib sib zog nqus xov tsim rau siab load-cov kabmob muaj peev xwm.
Taper
Kev sib txuas ntawm cov yeeb nkab laum muaj qhov steeper taper tshaj li casing threads kom tso cai rau kom ceev "makeup" (kev sib txuas) thiab breakout:
1: 6 (2 nti ib ko taw):Siv rau feem ntau NC thiab IF kev sib txuas.
1: 4 (3 nti ib ko taw):Siv rau feem ntau REG thiab qee qhov kev sib txuas FH.
NC thiab IF Interchangeability (Qhov Kev Paub Tseem Ceeb)
Nyob rau hauv lub oilfield, ntauNC (Numbered Connections)yogtag nrho interchangeablenrog cov lausIF (Internal Flush)Kev sib txuas vim tias lawv daim ntawv xov, TPI, thiab taper zoo ib yam:
NC26= 2-3/8" IF
NC 31= 2-7/8" IF
NC 38= 3-1/2" IF
NC46= 4" IB
NC50= 4-1/2" IF
Drill Pipe RSC vs. Casing Threads
| Feature | Drill Pipe RSC | Casing Xov (STC/LTC/BTC) |
| Sealing Qhov chaw | Lub xub pwg nyom(Hlau-rau-Hlau) | Xov Flanks (Surfaces) |
| Thawj Kev Nyuaj Siab | Torque & dabtsi yog khoov | Tension & Internal Pressure |
| Kev sib txuas zaus | Siab heev (Txhua qhov kev mus ncig) | Tsis tshua muaj siab heev (Kev teeb tsa tas mus li) |
| Txuj | API 7-1 | API 5B / 5CT |
API Drill yeeb nkab txuas Hoobkas
Drill pipe connect test equipments
Laum yeeb nkab txuas daim ntawv pov thawj
FAQ
Dab tsi yog qhov sib txawv ntawm cov tho yeeb nkab threads?
Laum yeeb nkab sib txuas xov yog feem ntau categorized rau API tus qauv xov thiab tsis yog -API hwm kev sib txuas, nrog API tus qauv xov suav nrog NC, IF, FH, thiab REG, uas feem ntau siv hom kev sib txuas hauv cov roj drilling.
NC (tus lej): Pom zoo los ntawm API raws li hom nyiam, muab kev sib hloov tau zoo, haum rau cov kav dej tho, laum dab tshos, thiab kev sib txuas me ntsis.
IF (Internal Flat): Nta ib txoj kab sib koom ua ke nrog lub cev yeeb nkab, txo qis tsis kam; Txawm li cas los xij, ua rau muaj kev ntxhov siab ntau thiab hloov ntau los ntawm NC.
FH (Full Hole): Siv rau loj - cov cuab yeej loj nrog lub me me sib koom ua ke sab hauv kab, tam sim no feem ntau hloov los ntawm NC.
REG (Regular): Muaj qhov sib koom ua ke me tshaj plaws hauv txoj kab uas hla, feem ntau yog siv rau kev sib txuas me ntsis, thiab txhua qhov ntau thiab tsawg nyob hauv API qauv.
Qhov luaj li cas rau laum rau 3/4 yeeb nkab xov?
Rau 3/4 "pipe thread, qhov pom zoo pilot qhov taub yog19.05mm 3rau ncaj (G) threads. Rau cov xov tapered xws li R3/4 lossis NPT 3/4-14, siv lub qhov me me - kwv yees li17.2mm 3- xam raws li:loj diam rho tawm suab.
