Casing yog cov kav hlau uas tau khiav mus rau hauv lub qhov dej drilled kom stabilize lub qhov dej, kom tsis txhob muaj kab mob thiab dej tawm ntawm cov roj ntws, thiab tiv thaiv cov roj los ntawm leaching mus rau hauv av. Casing yog ntsia nyob rau hauv cov khaubncaws sab nraud povtseg, nyob rau hauv cov seem ntawm txoj kab uas hla uas txo qis uas tau koom ua ke los tsim cov hlua casing. Lub tsib hom hlua casing yog tus neeg xyuas pib casing, nto casing, nruab nrab casing, casing liner, thiab ntau lawm casing.
Casing feem ntau yog ua los ntawm cov pa roj carbon steel, tab sis raws li cov txheej txheem tseem ceeb ntawm lub qhov dej, qib ntawm cov hlau siv los ua lub casing, thiab cov specifications ntawm cov khoom tiav, tseem ceeb heev.
Feem ntau lub teb chaws ua raws li American Petroleum Institute (API) cov qauv rau kev tsim, kev tsim khoom, kev sim, thiab kev thauj mus los ntawm cov roj thiab cov roj siv hauv qhov dej uas yuav raug hydraulically tawg. Raws li API's Hydraulic Fracturing Operations-Zoo Kev Tsim Kho thiab Kev Ncaj Ncees Cov Lus Qhia, casing yuav tsum ua raws li cov kev cai nruj rau compression, nro, vau, thiab tawg tsis kam, zoo, thiab sib xws. Zoo casing yuav tsum tiv thaiv hydraulic fracturing siab, ntau lawm pressures, thiab corrosive tej yam kev mob. Cov casing siv los yog kho dua tshiab yuav tsum ua kom tau raws li API qhov kev ua tau zoo ib yam li casing tshiab.
Thaum lub casing nyob rau hauv qhov chaw, tubing yog khiav mus rau hauv lub casing thauj cov roj los yog roj. Ob lub casing thiab tubing yog tsim los rau qee qhov diameters thiab phab ntsa thicknesses. Lub koom haum ntawm Petroleum Engineer's PetroWIKI site piav qhia txog cov txheej txheem tsim tubing:
API qhia txog seamless lossis hluav taws xob-weld txheej txheem rau kev tsim tubing. Seamless yeeb nkab yog txhais raws li ib tug wrought steel tubular khoom ua tsis muaj ib tug welded seam. Nws yog tsim los ntawm cov hlau ua haujlwm kub lossis, yog tias tsim nyog, tom qab txias-tiav cov khoom kub ua haujlwm los tsim cov duab uas xav tau, qhov ntev, thiab cov khoom. Vim tias qhov xwm txheej ntawm kev tsim khoom, ntu ntu ntawm cov phab ntsa ntawm lub tubing yuav yog me ntsis eccentric thiab cov tubing me ntsis oval thiab tsis zoo kawg nkaus ncaj.
Hluav taws xob-welded yeeb nkab muaj ib tug longitudinal seam tsim los ntawm hluav taws xob-ua hauj los yog hluav taws xob-induction vuam yam tsis muaj ntxiv ntawm muab tub lim hlau. Cov npoo yuav tsum tau welded yog nias ua ke mechanically, thiab lub tshav kub rau welding yog generated los ntawm cov tsis kam mus ntws ntawm hluav taws xob tam sim no. Weld seam ntawm hluav taws xob welded yeeb nkab yog kub-kho tom qab vuam mus rau qhov tsawg kawg nkaus kub ntawm 1, 000 degree F los yog ua tiav kom tsis muaj untempered martensite nyob.
Cov kauv thiab longitudinal welded raj siv hauv kev thauj mus los ntawm cov roj av yog tsim los ntawm kev ua haujlwm kub thiab yog tsim los ntawm dov steel rau hauv nyias strips los yog daim hlau. Kub dov tshwm sim ntawm qhov kub siab heev, siab dua qhov kub ntawm cov khoom siv recrystallization, ua malleable hlau uas tuaj yeem tsim ntau yam duab. Cold-formed steel yog tsim los ntawm yob txoj kev, txheej txheem txheej txheem hlau nyob rau hauv uas ib daim ntawv ntawm cov hlau yog nias los ntawm ib tug khub ntawm yob los txo thickness, nce lub zog thiab txhim kho nto tiav.
Online hlau thickness gauges rau kub-thiab txias-dov mills muab meej, real-time ntsuas los xyuas kom meej cov khoom tiav ua tau raws li qhov tseeb specifications rau ib puag ncig uas lawv ua hauj lwm. X-ray gauges yog qhov zoo tshaj plaws thickness gauge technology los muab qhov ceev thiab qhov tseeb yuav tsum tau ua hauj lwm kub los yog txias dov zeb. X-ray raws li sensor tshuab muab qhov tseeb heev ceev ceev / ntsuas suab nrov, tso cai rau cov neeg tsim khoom kom paub txog cov khoom txuag thiab kev txhim kho zoo.
Lub casing los ntawm Vigor yog tsim raws li API 5CT cov qauv, thiab cov txheej txheem ntau lawm yog nruj me ntsis kev npaj los ntawm Vigor's QC pab neeg, thiab tag nrho cov txheej txheem yog saib xyuas thiab sau tseg, thiab tag nrho cov ntaub ntawv tau txais yuav officially ntaub ntawv rau peb cov neeg muas zaub kom paub meej. Vigor yeej ib txwm ua raws li cov neeg siv khoom lag luam lub tswv yim ua lag luam, thiab qhov ntau peb ua, qhov tsawg dua peb cov neeg siv khoom tuaj yeem muaj. Yog tias koj txaus siab rau peb API 5CT casing los yog lwm yam cuab yeej rau downhole drilling thiab ua tiav cov roj thiab roj, thov hu rau Vigor rau qhov zoo tshaj plaws kev pab cuam.
