Dab tsi yog qhov casing loj
Apr 02, 2026
API 5CT casingmuaj ib txoj kab uas hla sab nraud xws li 114.3 hli mus rau 508 hli, thiab phab ntsa tuab feem ntau ntawm 3.18 hli thiab 22.2 hli. Qhov ntev muaj nyob hauv peb qib: R1 (4.88–7.62 m), R2 (7.62–10.36 m), thiab R3 (dhau 10.36 m).
Cov qhov ntev no yuav tsum ua raws li qhov tseeb technical specifications ntawmAPI SPEC 5CT UAS, version 11 (tso tawm Lub Kaum Ob Hlis 2023), luam tawm los ntawm American Petroleum Institute (API), kom ntseeg tau tias muaj kev nyab xeeb siv hauv qhov dej tob, ultra- qhov dej tob, thiab ib puag ncig corrosive.
API 5CT Casing Outer Diameter (OD) Specification
| Nominal Loj (inch) | Sab nraud Dia (inch) | Sab nraud Dia (mm) |
| 4 1/2" | 4.500 | 114.30 |
| 5" | 5.000 | 127.00 |
| 5 1/2" | 5.500 | 139.70 |
| 6 5/8" | 6.625 | 168.28 |
| 7" | 7.000 | 177.80 |
| 7 5/8" | 7.625 | 193.68 |
| 8 5/8" | 8.625 | 219.08 |
| 9 5/8" | 9.625 | 244.48 |
| 10 3/4" | 10.750 | 273.05 |
| 11 3/4" | 11.750 | 298.45 |
| 13 3/8" | 13.375 | 339.72 |
| 16" | 16.000 | 406.40 |
| 18 5/8" | 18.625 | 473.08 |
| 20" | 20.000 | 508.00 |
API 5CT Casing Phab Ntsa Thickness (WT) & Nyhav
| OD (inch) | Common Nominal Nyhav (lb/ft) | Phab ntsa Thickness (mm) |
| 4 1/2" | 9.50 / 11.60 / 13.50 | 5.21 / 6.35 / 7.37 |
| 5 1/2" | 15.50 / 17.00 / 20.00 / 23.00 | 6.71 / 7.52 / 8.94 / 10.59 |
| 7" | 23.00 / 26.00 / 29.00 / 32.00 / 35.00 | 8.05 / 9.19 / 10.36 / 11.51 / 12.65 |
| 9 5/8" | 36.00 / 40.00 / 43.50 / 47.00 / 53.50 | 8.94 / 10.03 / 11.05 / 11.99 / 13.84 |
| 13 3/8" | 48.00 / 54.50 / 61.00 / 68.00 / 72.00 | 8.38 / 9.65 / 10.92 / 12.19 / 13.06 |
| 20" | 94.00 / 106.50 / 133.00 | 11.13 / 12.70 / 16.13 |
API 5CT Casing Length ranges
| Ntev Ntau | Ntau yam hauv Feet (ft) | Qhov ntau thiab tsawg (m) |
| Ntau yam 1 (R1) | 16.0 – 25.0 | 4.88 – 7.62 |
| Ntau yam 2 (R2) | 25.0 – 34.0 | 7.62 – 10.36 |
| Ntau yam 3 (R3) | 34.0 - Saum toj no | 10.36 - Nws |
API Standard Casing Connections
| Abbr. | Lub Npe | Xov Form | Cov yam ntxwv tseem ceeb | Cov ntawv thov tseem ceeb |
| STC | Luv Round Xov | Round (V{0}}shape), 8 TPI | Yooj yim rau stab thiab tsim. Tus nqi qis dua. Sealing cia siab rau cov xov sib txuas. | Cov qhov dej ntiav, tsawg- qhov chaw siab, tsis tshua muaj tensile load. |
| LTC | Ntev Round Xov | Round (V{0}}shape), 8 TPI | Ntev xov ntev dua STC; txhim kho tensile lub zog thiab xau kuj. | Nruab nrab- qhov tob tob; kev lag luam tus qauv rau cov pa casing. |
| BTC | Buttress Xov | Trapezoidal, 5 TPI | Superior tensile zog thiab tsis kam mus rau longitudinal rub. Muaj peev xwm thauj khoom siab. | Cov qhov dej tob, cov kab loj loj, lossis cov hlua hnyav hnyav. |
Hwm Kev Sib Txuas
| Hom | Qhov Zoo Tshaj Plaws | Technical nta | Hom Hom / Series |
| Gas -Tight | 100% Leak Resistance | Features ib tug tshwj xeebHlau -rau- Hlau (M-M)thaj chaw foob. | VAM TOP, TenarisHydril Blue, Hunting Seal |
| Flush / Semi-Flush | Tsawg Clearance / Smooth OD | Kev sib txuas OD yog sib npaug los yog me ntsis loj dua cov yeeb nkab OD; txo downhole kev sib txhuam. | VAM FJL, TenarisHydril CS, Wedge 513 |
| Siab Torque | Siab Torsional Strength | Koom nrog aTorque Lub xub pwg nyomtiv thaiv tshaj - xov. | Casing Drilling, Kab rov tav Wells, Extended Reach Wells. |
GNEE API 5CT Casing hauv Tshuag
FAQ
Dab tsi yog qhov kam rau ua API casing?
0.875 yam sawv cev rau cov chaw tsim khoom tso cai rau kev ua siab ntev ntawmrho tawm 12.5% ntawm phab ntsa thicknessrau API specifications.
OD tolerance ntawm API 5CT yog dab tsi?
Los ntawm API 5CT,OD kam rau ua rau cov yeeb nkab me dua 4.5 "yog +/- 0.031" (0.019 hli). Rau 4.5 ″ lossis loj dua, OD kam rau ua yog +1.00%, -0.5%.
API 5CT yog dab tsi?
API 5CT yogib tug specification tsim los ntawm American Petroleum Institute (API) rau casing thiab tubing cov ntaub ntawv siv nyob rau hauv roj thiab roj kev lag luam. Nws suav nrog ntau qib tsim los ua kom tau raws li qhov sib txawv ntawm kev ua haujlwm thiab ib puag ncig.
