Tom ntej: C95 Tubing
Txheem:API 5CT (American Petroleum Institute Specification 5CT)
Qib: C95
Hom:Seamless Steel Tubing
Kev Siv Tseem Ceeb:Cov kav dej hauv lub qhov dej los ntawm cov hydrocarbons (roj / roj) raug tsim rau saum npoo.
Feature tseem ceeb: A mid-ntau zog, qib kev pabcuam qaubtsim los rau lub qhov dej uas muaj hydrogen sulfide (H₂S).
Kev piav qhia ntxaws
1. API 5CT – Txoj Cai Tswjfwm
Qhov no yog lub thoob ntiaj teb specification rau steel kav (casing thiab tubing) siv nyob rau hauv cov roj thiab roj qhov dej. Nws txhais tau tias:
Dimensions, hnyav, thiab threading.
Hlau tshuaj muaj pes tsawg leeg thiab txhua yam khoom (yield zog, tensile zog, hardness).
Kev sim thiab tshuaj xyuas cov cai (kev sim hydrostatic, tsis yog- kuaj kev puas tsuaj).
Kos npe thiab cov ntaub ntawv.
2. "C95" – Qib Qib
"C": Keeb kwm sawv rau "Casing," tab sis qib tam sim no siv rau ob qho tib si casing thiab tubing. Hauv cov ntsiab lus ntawm koj cov lus nug, nws tau teev tias yog tubing.
"95": Qhia covyam tsawg kawg nkaus yield zogntawm 95,000 psi (655 MPa). Yield zog yog qhov kev nyuaj siab uas cov khoom pib deform plastically.
Kev faib tawm:C95 yog ib feem ntawmPab pawg 2ntawm API 5CT qib, uas yog cov qib uas yuav tsum tau tswj hardness thiab feem ntau siv hauv kev pabcuam qaub.
3. Cov yam ntxwv tseem ceeb & cov cuab yeej
Qib Siab:Nruab nrab -ntaus. Muaj zog dua qib zoo li J55 thiab L80, tab sis tsis muaj zog li P110 lossis Q125. Qhov no ua rau nws muaj ntau yam kev xaiv rau ntau qhov tob tob thiab siab.
Sour Service Muaj peev xwm:Qhov no yog qhovQhov tseem ceeb tshaj plaws ntawm C95. Nws yog tsim tshwj xeeb rau ib puag ncig uas muajH₂S(kua roj).
Nws cov tshuaj muaj pes tsawg leeg thiab siab tshaj plaws hardness yog nruj me ntsis tswj kom tiv tausSulfide Stress Cracking (SSC), ib qho kev puas tsuaj loj uas tsis ua hauj lwm hauv H₂S muaj.
Nws yuav tsum ua raws liAnnex HISO 15156-2 / NACE MR0175, tus qauv rau cov khoom siv hauv H₂S-muaj ib puag ncig.
Hardness txwv:Qhov siab tshaj plaws hardness yog capped (feem ntau 25.4 HRC lossis 241 HBW) los txhim kho SSC tsis kam.
Khoom siv:Seamless steel, tsim los ntawm cov txheej txheem zoo li cov tho qhov sib txawv kom ntseeg tau tias muaj kev ntseeg siab nyob rau hauv siab.
4. Kev sib piv nrog Cov Qib Siab
| Qib | Min Yield Strength (ksi) | Hom Siv Case | Sour Service (H₂S) | Sau ntawv |
|---|---|---|---|---|
| J55 | 55 | ntiav, qis-siab, qhov dej qab zib | Tsis muaj | Kev lag luam, tab sis tsis yog rau kev pabcuam corrosive. |
| L80 | 80 | Nruab nrab qhov tob / siab, ntau yam | Yog (Tim 1) | Qib kev pabcuam qaub tshaj plaws. C95 muaj zog dua. |
| C95 | 95 | Sib sib zog nqus / siab dua qhov dej qaub | Yog lawm | Txoj kev mus - mus xaiv thaum L80 lub zog tsis txaus nyob rau hauv ib puag ncig qaub. |
| P110 | 110 | Qhov tob, siab - qhov dej siab | Feem ntau No | Muaj zog heev, tab sis tsis yog rau kev pabcuam qaub tshwj tsis yog hloov kho tshwj xeeb. |
5. Cov ntawv thov ib txwm
C95 tubing tau teev tseg rau cov hlua ntau lawm hauv qhov dej qhov twgob leegntawm cov xwm txheej hauv qab no muaj:
Nruab Nrab rau Siab Siab / Qhov tob:Xav tau lub zog tawm los ntau dua L80 (80 ksi) tuaj yeem muab tau.
Qab Zib Ib puag ncig:Kev muaj H₂S nyob rau hauv lub reservoir kua mandates SSC -cov ntaub ntawv resistant.
6. Cov lus qhia txog cov ntsiab lus
| Khoom | Specification |
|---|---|
| Txuj | API 5CT (Tsawg tsab: API 5CT 9th Edition, ua raws li ISO 11960) |
| Qib | C95 |
| Hom | Seamless Tubing |
| Yam tsawg kawg nkaus Yield Strength | 95,000 psi (655 MPa) |
| Maximum Hardness | 25.4 HRC (241 HBW) - Qhov tseem ceeb rau SSC tsis kam. |
| Xov | API lossis Premium. Kev sib txuas: API EUE (External Upset End) threads, los yog kev sib txuas tus nqi tsim nyog rau kev txhim kho sealability. |
| Sour Service Qualification | Ua raws li ISO 15156-2 / NACE MR0175 (Annex H hauv API 5CT). |
Kev txiav txim siab tseem ceeb rau Engineers & Buyers
Tsis yog rau Quench & Tempering (Q&T):Tsis zoo li L80, C95 yogtsis yogmanufactured siv quenching thiab tempering txheej txheem. Nws yog feem ntau normalized los yog normalized thiab tempered.
Kev yuav khoom yog qhov tseem ceeb:API spec tso cai rau variations. Daim ntawv xaj yuav tsum qhia cov ntsiab lus tseem ceeb:
Kev xa khoom (piv txwv li, normalized).
Kev xeem SSC (piv txwv li, Txoj Kev A, B, lossis C rau NACE TM0177).
Yuav tsum tau kuaj xyuas thiab ntawv pov thawj (piv txwv li, I, II, lossis III raws li API 5CT).
Kev xaiv kev sib txuas:Tubing qhov kev ua tau zoo tsuas yog zoo li nws cov kev sib txuas. Rau cov qhov dej qaub tseem ceeb, kev sib txuas zoo nrog cov hlau - mus rau - cov ntsaws ruaj ruaj yog feem ntau ua ke nrog C95 yeeb nkab lub cev.
Hauv cov ntsiab lus,API 5CT C95 tubing yog ib qho qaub- kev pabcuam- qib cov tubing uas tau xaiv rau cov qhov dej uas xav tau qhov sib npaug ntawm lub zog (95 ksi tawm los) thiab lav tiv thaiv sulfide kev nyuaj siab tawg hauv hydrogen sulfide ib puag ncig.Nws ua rau qhov sib txawv tseem ceeb ntawm L80 feem ntau siv thiab tsis yog -cov kev pabcuam qaub siab - qib zog.
