Taw qhia
Hauv kev lag luam roj thiab roj, lub tshuab hluav taws xob submersible twj (ESP) yog ib qho khoom siv nqa tau zoo heev. Kev tsim thiab tsim khoom ntawm nws cov khoom tseem ceeb - lub twj tso kua mis - cuam tshuam ncaj qha rau kev ua haujlwm thiab kev pabcuam lub neej ntawm tag nrho cov kab ke. Raws li cov khoom tseem ceeb uas txhawb nqa lub impeller thiab tiv thaiv cov txheej txheem sab hauv, lub twj tso kua mis cov khoom xaiv, kev tsim qauv, thiab cov txheej txheem tsim khoom ncaj qha txiav txim siab ESP qhov kev hloov pauv raws li kev ua haujlwm sib txawv. Tsab ntawv xov xwm no yuav qhia txog qhov sib txawv tseem ceeb ntawm ESP twj tso kua mis hom, tshuaj xyuas cov yam ntxwv ntawm kev siv thiab kev siv cov xwm txheej ntawm txhua hom, thiab muab cov ntaub ntawv siv rau cov engineers thiab cov kws tshaj lij thaum xaiv thiab txhim kho ESP systems.
Basic Functions thiab Technical Requirements ntawm Pump Casing
Lub ESP lub twj tso kua mis ua ntej ua lub cev thaiv kev tiv thaiv lub hauv paus rotating Cheebtsam thiab yuav tsum muaj lub zog txaus kom tiv taus qhov siab -siab downhole ib puag ncig. Qhov thib ob, cov qauv geometric ntawm txoj hauv kev ntws sab hauv ntawm lub twj tso kua mis ncaj qha cuam tshuam cov yam ntxwv ntawm cov kua dej, uas nyob rau hauv lem cuam tshuam rau lub twj tso kua mis efficiency thiab cavitation kev ua tau zoo. Los ntawm cov ntaub ntawv tshawb fawb pom, lub twj tso kua mis yuav tsum tiv thaiv cov teebmeem ntawm cov khoom corrosive thiab cov khoom siv hauv cov roj crude. Tsis tas li ntawd, muab qhov nyuaj ntawm downhole installation, lub twj tso kua mis casing yuav tsum tau raws li nruj me ntsis kam rau ua thiab kev twb kev txuas compatibility qauv. Cov kev xav tau ntau yam no ua rau muaj qhov sib txawv tseem ceeb hauv cov twj tso kua mis tsim rau cov xwm txheej sib txawv.
Qhov sib txawv hauv Pump Casings los ntawm Khoom
Cast Iron Pump Casings
Cov tsoos cam khwb cia hlau twj casings tau dav siv nyob rau hauv thaum ntxov ESP systems vim lawv cov nqi qis thiab zoo heev casting zog. Grey cam khwb cia hlau twj tso kua mis muaj lub zog nruab nrab thiab kev co zoo damping, tab sis lawv cov corrosion kuj tsis muaj zog, tshwj xeeb tshaj yog nyob rau hauv acidic roj zoo ib puag ncig uas muaj hydrogen sulfide los yog carbon dioxide, qhov uas lawv raug rau electrochemical corrosion. Niaj hnub no txhim kho ductile hlau twj casings tau txais kev kho mob graphite spheroidization, ua kom cov khoom muaj zog thiab tensile zog, nrog rau nws cov corrosion kuj. Lawv tseem siv tau hauv qee qhov dej ntiav, qis -corrosion pa roj qhov dej.
Stainless Hlau Pump Casings
316L stainless hlau twj tso kua mis casings yog qhov kev xaiv rau nruab nrab - rau siab -corrosion ib puag ncig vim lawv zoo heev corrosion kuj. Cov khoom no muaj kev tiv thaiv zoo heev rau chloride kev nyuaj siab corrosion cracking thiab yog haum rau oilfield ua kua nrog siab chloride ion ntsiab lus. Duplex stainless hlau (xws li 2205 thiab 2507) twj tso kua mis muaj qhov sib npaug ntxiv ntawm lub zog thiab kev tiv thaiv corrosion, ua tau zoo tshwj xeeb hauv siab - kub, siab - siab, thiab CO₂- muaj ib puag ncig. Txawm li cas los xij, lawv cov khoom siv yog kwv yees li 2-3 npaug ntawm cov qauv stainless hlau. Super austenitic stainless hlau (xws li AL-6XN) yog tsim los rau ib puag ncig corrosive heev. Thaum kim, nws qhia tau hais tias zoo heev ntev -lub sij hawm kev cia siab nyob rau hauv high-sulfur, high-chloride roj qhov dej.
Alloy Material Pump Casings
Nickel-raws li alloys (xws li Inconel 625 thiab Hastelloy C-276) cov twj tso kua mis sawv cev rau qib siab tshaj plaws ntawm kev tiv thaiv corrosion, tshwj xeeb tshaj yog tsim rau cov roj qaub thiab cov roj qhov dej uas muaj hydrogen sulfide. Cov ntaub ntawv no muaj cov khoom siv kho tshuab ruaj khov nyob rau hauv ib puag ncig corrosive heev, tab sis lawv cov nqi siab (kwv yees li 5-10 npaug ntawm cov hlau tsis muaj steel) txwv lawv txoj kev siv dav. Titanium alloy twj tso kua mis, thaum muab kev ua tau zoo tag nrho, tam sim no tsuas yog txwv rau cov ntawv tshwj xeeb, siab-kawg vim kev ua haujlwm nyuaj thiab cov nqi txwv. Pump Casing Sib txawv los ntawm kev tsim qauv
Standard Ncaj-Los ntawm Pump Casing
Tus qauv ncaj nraim-los ntawm lub twj tso kua mis siv qhov yooj yim cylindrical ntws txoj kev tsim, muab cov nqi tsim khoom tsawg thiab cov kua dej tsawg. Nws yog haum rau homogeneous kua thiab kev nqa nqa dav dav. Nws txoj hauv kev ntws sab hauv feem ntau muaj ib zaug lossis ntau -stage tandem qauv, nrog rau txhua theem muaj lub impeller thiab cov lus qhia impeller (los yog casing diffuser). Qhov kev tsim no yog siv dav hauv qhov dej ntiav thiab nruab nrab- qhov tob tob, tab sis tuaj yeem ua rau cov dej tsis ruaj khov hauv cov kua dej uas muaj roj ntau ntau - cov kua sib piv lossis cov khoom uas muaj cov khoom siv.
Kauv Pump Casing
Kauv twj tso kua mis casing (tseem hu ua volute twj tso kua mis casing) siv ib tug tshwj xeeb kauv ntws txoj kev tsim kom zoo dua hloov lub kinetic zog ntawm cov kua rau hauv siab zog, ho txhim kho tag nrho cov twj tso kua mis efficiency. Qhov kev tsim no yog tshwj xeeb tshaj yog zoo - haum rau tuav siab - viscosity kua, raws li nws ntws txoj kev nthuav dav lub kaum sab xis yog optimized kom txo tau ntws sib cais thiab vortex poob. Cov txheej txheem tsim khoom rau kauv twj tso kua mis yog qhov nyuaj, feem ntau xav tau precision casting lossis CNC machining, uas ua rau cov nqi ntau dua. Nws feem ntau yog siv hauv nruab nrab - mus rau siab -viscosity reservoirs lossis hauv cov qhov dej ntau lawm uas xav tau lub zog-txuag optimization. Lub twj tso kua mis tshwj xeeb
Casing Structures
Cov twj tso kua mis tshwj xeeb tsim los rau cov kev ua haujlwm tshwj xeeb suav nrog: xuab zeb- cov twj tso kua mis resistant (nrog hnav- cov ntaub ntawv tiv taus lossis cov txheej tawv tawv ntxiv rau hauv phab ntsa), tiv thaiv - roj twj tso kua mis casings (nrog optimized inlet geometry los txo cov roj cuam tshuam), thiab siab - kub twj tso kua mis casings (nrog rau cov khoom siv cua sov tshwj xeeb- tiv taus cua sov). Cov qauv tsim tshwj xeeb no hais txog qhov kev txwv ntawm kev ua haujlwm ntawm cov pa twj tso kua mis hauv ib puag ncig tshwj xeeb los ntawm kev tsim kho tshiab. Txawm hais tias tsis tshua muaj ntau yam, lawv tuaj yeem txhim kho qhov kev ntseeg tau zoo thiab tus nqi -kev ua tau zoo hauv cov ntawv thov tshwj xeeb.
Qhov cuam tshuam ntawm kev tsim cov txheej txheem ntawm Pump Casing Performance
Xuab zeb casting, cov txheej txheem tseem ceeb rau cov tsoos twj tso kua mis casing manufacturing, yog haum rau loj - teev ntau lawm tab sis muaj tsawg qhov tseeb qhov tseeb thiab feem ntau yuav tsum tau tom qab machining. Precision casting (xws li poob siv quav ciab casting) ua kom muaj ntau qhov geometries thiab ntau dua qhov chaw tiav, txo qis hauv kev khiav hauj lwm thiab txhim kho kev ua haujlwm. Nyob rau hauv xyoo tas los no, kev tsim khoom ntxiv (3D luam ntawv) tau ua kom pom qhov zoo ntawm cov qauv tsim thiab tsim cov khoom siv tshwj xeeb hauv cov twj tso kua mis, ua kom muaj kev sib koom ua ke ntawm cov txheej txheem sab hauv. Txawm li cas los xij, kev xaiv cov khoom siv tsawg thiab cov nqi tsim nyog tau tiv thaiv nws daim ntawv thov kev lag luam thoob plaws.
Cov txheej txheem kev kho cua sov muaj kev txiav txim siab ntawm kev ua haujlwm ntawm lub twj tso kua mis. Piv txwv li, stainless hlau twj tso kua mis feem ntau xav tau kev daws annealing thiab pickling passivation los txhim kho corrosion kuj; siab- lub zog alloy twj tso kua mis casings yuav tau txais kev kho cua sov tshwj xeeb los txhim kho lawv cov khoom siv kho tshuab. Cov txheej txheem kev kho deg xws li carbide txau thiab laser cladding tuaj yeem txhim kho qhov hnav thiab corrosion kuj ntawm cov twj tso kua mis tseem ceeb, txuas lawv lub neej kev pab cuam.
Engineering Considerations rau Pump Casing Xaiv
Thaum xaiv lub twj tso kua mis ESP, cov kws ua haujlwm yuav tsum ua tib zoo xav txog cov hauv qab no tseem ceeb: lub hom phiaj qhov tob, siab, thiab kub; lub cev thiab tshuaj lom neeg cov khoom ntawm cov kua ua kua (xws li corrosiveness, abrasiveness, gas{0}}kua piv, thiab viscosity); lub neej kev cia siab ntau lawm; thiab kev xav tau nyiaj txiag. Rau ib puag ncig corrosive heev, stainless hlau lossis alloy cov ntaub ntawv yuav tsum tau ua ntej, txawm tias tus nqi ntawm qee qhov txiaj ntsig zoo. Hauv cov dej uas muaj cov xuab zeb siab, hnav tsis kam yog qhov tseem ceeb dua li kev ua kom zoo dua qub. Niaj hnub nimno ESP system tsim feem ntau siv modular twj tso kua mis kev daws teeb meem, tso cai rau hloov pauv tau yooj yim thiab hloov kho dua tshiab raws li kev tsim khoom.
Xaus
Raws li lub ntsiab lus tseem ceeb ntawm cov tshuab nqa khoom, kev xaiv ntawm ESP twj tso kua mis ncaj qha cuam tshuam rau kev tsim khoom, kev ntseeg siab, thiab kev lag luam. Los ntawm cov khoom xaav, cam khwb cia hlau, stainless hlau, thiab alloys txhua tus muaj lawv tus kheej cov xwm txheej. Los ntawm kev tsim qauv kev xav, ncaj-los ntawm, muab kauv, thiab tshwj xeeb- cov twj tso kua mis ua tau raws li cov dej sib txawv uas xav tau. Nrog rau kev nce qib hauv cov ntaub ntawv tshawb fawb thiab kev tsim khoom siv tshuab, ESP twj tso kua mis yav tom ntej yuav txhim kho kom muaj kev tiv thaiv corrosion ntau dua, muaj zog hnav tsis kam, thiab txhim kho cov dej tsis zoo. Cov qauv tsim digital thiab ntse tsim thev naus laus zis kuj tseem yuav txhim kho kev kho kom haum thiab zoo sib xws ntawm cov khoom siv twj tso kua mis. Cov kws tshaj lij thiab cov kws tshaj lij yuav tsum tshawb fawb txog kev tshawb fawb thiab kev lag luam muaj peev xwm ntawm ntau yam twj tso kua mis raws li cov dej tshwj xeeb thiab cov kev cai tsim khoom los txiav txim siab xaiv qhov zoo.
