Raws li covAPI 5 CTspecification, lub thickness yog txiav txim los ntawm kev sib xyaw ntawm covSab nraud txoj kab uas hla (OD)thiab covNominal Luj (Linear Weight)ntawm lub cev.
Muaj lus nug ceev txog API 5CT casing specifications?Tham nrog tus kws tshaj lij khoom tam sim norau cov lus teb tam sim thiab cov kws tshaj lij kev taw qhia.
Yuav ua li cas txiav txim siab API Casing Thickness
Phab ntsa thickness yog xam raws li cov hlau qhov ntom thiab cov yeeb nkab qhov ntev kom tau raws li cov kev xav tau tshwj xeeb:
Qhov hnyav dua=Phab ntsa Thicker:Rau tib qhov Sab Nraud Sab Nraud, cov yeeb nkab "hnyav" muaj cov phab ntsa tuab, uas ua rau nws nceCollapse ResistancethiabLub zog tawg.
Drift Diameter:Qhov no yog qhov ntsuas qhov tseem ceeb me me dua li Sab Hauv Diameter (ID). nws lav tias lub cylindrical mandrel ntawm ib qho loj me tuaj yeem dhau los ntawm cov yeeb nkab.
API 5CT Casing Size Chart (Common Size)
Hauv qab no yog ib daim ntawv qhia uas feem ntau siv API casing qhov ntau thiab tsawg, lawv qhov hnyav, thiab cov phab ntsa tuab.
| Sab nraud txoj kab uas hla (OD) | Nominal Nyhav | Phab ntsa Thickness | Sab hauv Diameter (ID) | Drift Diameter |
| ntiv tes (mm) | lb/ft (kg/m) | ntiv tes (mm) | ntiv tes (mm) | ntiv tes (mm) |
| 4-1/2" (114.3) | 9.50 | 0.205 (5.21) | 4.090 (103.89) | 3.965 (100.71) |
| 11.60 | 0.250 (6.35) | 4.000 (101.60) | 3.875 (98.43) | |
| 13.50 | 0.290 (7.37) | 3.920 (99.57) | 3.795 (96.39) | |
| 5-1/2" (139.7) | 15.50 | 0.275 (6.98) | 4.950 (125.73) | 4.825 (122.56) |
| 17.00 | 0.304 (7.72) | 4.892 (124.26) | 4.767 (121.08) | |
| 20.00 | 0.361 (9.17) | 4.778 (121.36) | 4.653 (118.19) | |
| 7" (177.8) | 23.00 | 0.317 (8.05) | 6.366 (161.70) | 6.241 (158.52) |
| 26.00 | 0.362 (9.19) | 6.276 (159.41) | 6.151 (156.24) | |
| 32.00 | 0.453 (11.51) | 6.094 (154.79) | 5.969 (151.61) | |
| 9-5/8" (244.5) | 36.00 | 0.352 (8.94) | 8.921 (226.59) | 8.765 (222.63) |
| 40.00 | 0.395 (10.03) | 8.835 (224.41) | 8.679 (220.45) | |
| 47.00 | 0.472 (11.99) | 8.681 (220.50) | 8.525 (216.54) | |
| 13-3/8" (339.7) | 48.00 | 0.330 (8.38) | 12.715 (322.96) | 12.559 (319.00) |
| 54.50 | 0.380 (9.65) | 12.615 (320.42) | 12.459 (316.46) | |
| 68.00 | 0.480 (12.19) | 12.415 (315.34) | 12.259 (311.38) | |
| 20" (508.0) | 94.00 | 0.438 (11.13) | 19.124 (485.75) | 18.936 (480.97) |
| 133.00 | 0.635 (16.13) | 18.730 (475.74) | 18.542 (470.97) |
Tsis txhob tos rau kev tsim khoom. Peb npaj 4-1/2 "rau 20" casing nyob rau hauv ntau yam phab ntsa thicknesses.Tshawb xyuas Peb Npaj Ua Ntej- rau -Ship Inventory.
Casing Xaiv los ntawm Hom
Lub thickness thiab qhov luaj li cas koj xaiv nyob ntawm seb qhov twg ntawm qhov dej casing yog siv rau:
Conductor Casing (20" - 30"):Feem ntau cov thinnest txheeb ze rau nws qhov loj me; siv los tiv thaiv sab saum toj ntawm lub qhov dej los ntawm caving.
Nto Casing (13-3/8" - 20"):Tiv thaiv thaj chaw dej tshiab thiab muab lub hauv paus rau BOP (Blowout Preventer).
Qhov nruab nrab casing (7" - 9-5/8"):Siv nyob rau hauv qhov tob tob kom cais cov siab - thaj chaw siab los yog tsis ruaj khov. Yuav tsum tau siab dua phab ntsa thickness los tiv thaiv lub cev qhuav dej.
Cov khoom siv (4-1/2" - 7"):Txoj hlua tob tshaj plaws. Nws yuav tsum tiv taus qhov siab tshaj plaws hauv siab thiab feem ntau muaj cov phab ntsa tuab tshaj plaws rau nws txoj kab uas hla.
Kev txiav txim siab tseem ceeb rau koj
Kev kam rau siab:API 5CT tso cai rau phab ntsa thickness kam rau ua (feem ntau-12.5%). Qhov no txhais tau hais tias cov yeeb nkab tiag tiag tuaj yeem yog me ntsis thinner dua li qhov nominal thickness ntawm daim ntawv.
Qib Influence:Thaum "Thickness" muab lub zog lub cev, lubQib Steel (J55, K55, N80, P110) txiav txim siab lub zog tshuaj. Ib lub yeeb nkab P110 nyias yuav muaj zog dua li J55 yeeb nkab.
Coupling OD:Nco ntsoov tias lub coupling (qhov txuas txuas) muaj ib txoj kab uas hla loj dua lub cev yeeb nkab, uas yuav tsum tau txiav txim siab thaum xam clearance nyob rau hauv lub borehole.
GNEE API 5CT OCTG Yeeb Nkab Txheej Txheej Kab
GNEE API 5CT Casing thiab Tubing Test Equipments
GNEE API 5CT oilfield casing yeeb nkab Certificate
FAQ
Dab tsi yog phab ntsa thickness kam rau ua API 5CT?
Phab ntsa thickness kam rau ua API 5CT casing thiab tubing yog-12.5%.
Qhov no txhais tau tias:
Qhov tseeb phab ntsa thickness ntawm txhua qhov chaw yuav tsum tsis txhob tsawg dua87.5%ntawm nominal phab ntsa thickness.
Muaj feem ntautsis muaj qhov tshwj xeeb ntxiv (+)kam rau ua thickness, tab sis qhov siab tshaj plaws thickness yog zoo txwv los ntawm cov yeeb nkab tag nrho qhov hnyav kam rau ua (feem ntau yog +6.5% rau ib qhov ntev).
Dab tsi yog qhov sib txawv ntawm cov casings?
API 5CT casing qhov ntau thiab tsawg yog standardized los ntawm lawvSab nraud txoj kab uas hla (OD). Lawv feem ntau yog los ntawm4-1/2 nti rau 20 nti.
Nov yog qhov ntau thiab tsawg uas tau muab faib los ntawm lawv cov kev siv hauv qhov dej:
Me me (Production Casing): 4-1/2", 5", 5-1/2"
Nruab nrab (Intermediate Casing): 7", 7-5/8", 9-5/8"
Loj (Nto/Conductor Casing): 13-3/8", 16", 20"
