J55 yog cov roj casing yeeb nkab ua raws li Asmeskas tus qauv API 5CT. Nws feem ntau yog siv los txhawb cov phab ntsa hauv lub qhov dej, cais kev tsim cov siab, thiab thauj cov roj thiab roj, thiab siv dav hauv cov roj qhov dej, qhov dej roj, qhov dej hauv qhov dej, thiab lwm yam kev siv. Nws cov txheej txheem sab nraud yog li ntawm 139.7 txog 244.5 millimeters, nrog rau phab ntsa thickness ntawm 7.72 txog 11.05 millimeters. Qhov ntev tau muab faib ua peb pawg: R-1 (4.88-7.62 meters), R-2 (7.62-10.36 meters), thiab R-3 (dhau 10.36 meters).
Cov yam ntxwv ua haujlwm
Mechanical Properties
Yield zog: 379-552 MPa, muaj peev xwm tiv taus kev tsim siab thiab tensile thiab compressive stresses thaum lub sij hawm drilling.
Tensile Strength: Ntau dua los yog sib npaug rau 517 MPa, ua tau raws li cov kev xav tau ntawm cov cuab yeej siv rau kev nqa thiab txo cov hlua tho nrog cov cuab yeej siv dav dav.
Elongation: Yam tsawg kawg nkaus elongation nyob rau hauv 50.8 hli ntsuas qhov ntev yog siab dua li ntawm K55 steel qib, haum rau dabtsi yog khoov los yog tensile processing scenarios yuav tsum tau ib tug tej yam℃ntawm deformation.
Optimized tshuaj muaj pes tsawg leeg
Phosphorus (P) Tsawg dua los yog sib npaug rau 0.030%, Sulfur (S) Tsawg dua los yog sib npaug rau 0.030%: Kev tswj nruj ntawm cov khoom tsim kev puas tsuaj txo cov kev cuam tshuam ntawm kev sib koom ua ke ntawm toughness.
Lwm Yam Khoom: Tsis tas yuav tsum tau ntxiv cov ntsiab lus alloying (xws li Cr, Mo), ua tiav qhov sib npaug ntawm kev ua tau zoo los ntawm cov pa roj carbon -manganese (C-Mn) system.
Impact Resistance
Hauv CVN Charpy qhov kev ntsuam xyuas qhov cuam tshuam, qhov cuam tshuam lub zog yog piv rau cov qib K55 steel, muaj peev xwm tiv taus qhov cuam tshuam rau lub sijhawm drilling thiab txo qhov kev pheej hmoo ntawm kev tawg tawg.
Economy thiab Versatility
Tus nqi zoo: Raws li qib steel qib hauv API 5CT tus qauv, J55 yog tus nqi qis dua qib siab -lub zog steel qib xws li L80 thiab P110, ua rau nws haum rau cov ntawv loj -.
Ntau yam ntawm Specifications: Sab nraud txoj kab uas hla ntawm 114.3-508mm, phab ntsa thickness ntawm 5.21-16.13mm, txhawb ntau hom xov xws li STC (luv round thread), LTC (ntev round thread), thiab BTC (buttress thread).
Kev soj ntsuam nruj nruj
Tsis yog-Kev kuaj kev puas tsuaj: Ultrasonic thiab sib nqus particle kuaj yog siv los kuaj xyuas qhov chaw thiab sab hauv, kom ntseeg tau tias kev ncaj ncees ntawm cov yeeb nkab lub cev.
Hydrostatic Pressure Test: Txheeb xyuas qhov kev ua tau zoo ntawm kev sib khi thiab tiv thaiv kev pheej hmoo ntawm kev xau.
Flattening Test: Pom cov yas deformation muaj peev xwm, kom ntseeg tau tias kev hloov pauv ntawm cov casing hauv cov txheej txheem nyuaj.
Daim ntawv thov
Nyias thiab nruab nrab -Kev Pabcuam Qhov tob tob
Haum rau cov roj thiab roj qhov dej nrog qhov tob tob thiab nruab nrab tsim siab. Los ntawm cov txheej txheem cementing thiab ua ke nrog cov cement, nws tsim cov qauv kev ruaj ntseg zoo los tiv thaiv kev tawg.
Cov xwm txheej zoo li no: Kev loj hlob zoo nyob rau hauv thaj av ntawm ntug dej hiav txwv, xws li qee qhov chaw zoo ntawm Daqing Oilfield thiab Shengli Oilfield.
Tsis yog -Corrosive Medium Ib puag ncig
Nyob rau hauv cov formations tsis muaj corrosive gases xws li hydrogen sulfide (H₂S) los yog carbon dioxide (CO₂), J55 casing yog qhov kev xaiv vim nws cov nqi kom zoo dua.
Kev sib piv: Hauv cov cheeb tsam acidic (xws li cov uas muaj H₂S), nws yog ib qho tsim nyog yuav tsum tau hloov mus rau corrosion-cov qib resistant steel xws li L80 thiab C90.
Dej Qhov Dej thiab Geological Kev Tshawb Fawb
Siv hauv dej zoo drilling los txhawb lub qhov dej thiab cais cov dej sib txawv; Hauv kev tshawb nrhiav geological, nws ua haujlwm ib ntus casing los tiv thaiv cov khoom siv drilling.
Tsawg-Cov Nqi Them Nqi
Hauv pob nyiaj siv - cov haujlwm tseem ceeb, J55 yog dav siv rau cov khoom siv sab nrauv thiab cov txheej txheem txheej txheem vim nws pheej yig thiab txaus txaus.
