Internal corrosion tau ua rau ADNOC raug kev txom nyem nyob rau hauv lub pipeline ntawm ib tug loj loj onshore roj teb.Lub siab xav kom tshem tawm qhov teeb meem no thiab yuav tsum tau los txhais ib tug specification thiab ib tug meej lub neej yav tom ntej streamline kev ncaj ncees txoj kev npaj tau coj mus rau lub teb sim daim ntawv thov ntawm grooved thiab flangeless high-density polyethylene (HDPE) hauv ob sab phlu thev naus laus zis hauv carbonscribe cov kav dej xyoo no daim ntawv thov kev vam meej. HDPE linings nyob rau hauv carbon steel kav yog ib tug nqi-zoo txoj kev mitigate internal corrosion nyob rau hauv roj pipelines los ntawm cais cov hlau kav los ntawm corrosive fluids.The technology yog nqi-zoo nyob rau hauv kev tswj corrosion hauv roj pipelines.
Nyob rau hauv ADNOC, Flowlines yog tsim los kav ntev tshaj 20 xyoo.Qhov no yog ib qho tseem ceeb rau kev lag luam txuas ntxiv thiab txo cov nqi khiav lag luam.Txawm li cas los xij, kev tswj cov kab no ua los ntawm cov hlau tsis yooj yim vim tias lawv muaj kev cuam tshuam sab hauv los ntawm cov kua dej corrosive, cov kab mob, thiab cov kab mob stagnant tshwm sim los ntawm cov dej ntws tsawg.Qhov kev pheej hmoo ntawm kev ncaj ncees fluctuation nyob rau hauv reservoir muaj hnub nyoog thiab kev hloov pauv.
ADNOC ua haujlwm cov kav dej ntawm qhov siab ntawm 30 mus rau 50 bar, kub txog 69 ° C thiab cov dej hla ntau tshaj 70%, thiab tau raug kev txom nyem ntau qhov kev tiv thaiv los ntawm kev xeb hauv cov kav dej hauv cov kav dej loj hauv ntug dej hiav txwv. Cov ntaub ntawv qhia tau tias cov khoom muaj nqis xaiv ib leeg muaj ntau dua 91 cov kav dej hauv av (30245 km) thiab ntau tshaj li 10 km. corrosion.Cov kev khiav hauj lwm uas dictated qhov kev siv ntawm lub hauv corrosion mitigation nrog tsawg pH (4.8-5.2), muaj CO2 (> 3%) thiab H2S (> 3%), roj / roj piv ntau dua 481 scf / bbl, kab kub siab tshaj 55 ° C, ntws kab siab tshaj 525 psi.High dej cov ntsiab lus tsawg (> 46 mcf). Cov kua dej tsis zoo, thiab muaj cov kab mob sulfate-txo cov kab mob kuj cuam tshuam rau cov tswv yim txo qis.Streamline xau txheeb cais qhia tias ntau ntawm cov kab no tau ua txhaum, nrog rau ntau li 14 qhov xau hauv 5-xyoos.Qhov no ua rau muaj teeb meem loj vim nws ua rau xau thiab cuam tshuam uas cuam tshuam rau kev tsim khoom.
Qhov poob ntawm qhov nruj thiab qhov xav tau ntawm qhov loj me thiab qhov tseeb ntawm kev tswj xyuas kev ncaj ncees rau yav tom ntej tau ua rau muaj kev sim ua daim ntawv thov ntawm slotted thiab flangeless HDPE hauv ob sab phlu hauv 3.0 km ntawm Schedule 80 API 5L Gr.B 6 inches.Streamlines kom tshem tawm qhov teeb meem no.Field mus sim tau thawj zaug siv rau 3.527 km ntawm cov yeeb nkab steel uas tau xaiv. 4.0km ua.
Lub Gulf Kev Koom Tes Pab Pawg (GCC) cov roj tseem ceeb hauv Arabian Peninsula tau teeb tsa HDPE liner thaum ntxov li 2012 rau cov kav dej thiab cov dej siv.A GCC cov roj tseem ceeb ua haujlwm ua ke nrog Plhaub tau siv HDPE linings rau dej thiab roj daim ntawv thov rau ntau tshaj 20 xyoo, thiab cov thev naus laus zis muaj peev xwm loj hlob tuaj rau sab hauv corrosion hauv cov kav dej.
ADNOC qhov project tau pib nyob rau lub quarter thib ob ntawm 2011 thiab tau teeb tsa hauv lub quarter thib ob ntawm xyoo 2012.Monitoring pib thaum lub Plaub Hlis 2012 thiab tau ua tiav nyob rau lub quarter thib peb ntawm 2017.Cov kev xeem spools raug xa mus rau Borouge Innovation Center (BIC) rau kev soj ntsuam thiab kev soj ntsuam.Qhov kev vam meej thiab tsis ua hauj lwm cov txheej txheem tau teev tseg rau lub quarter thib peb ntawm xyoo 2017.Qhov kev sim spools raug xa mus rau Borouge Innovation Center (BIC) rau kev ntsuam xyuas thiab kev soj ntsuam.Qhov kev vam meej thiab tsis ua hauj lwm cov txheej txheem tau teev tseg rau qhov tsawg tshaj li HDPE liner liner. HDPE liner, thiab tsis muaj kab tawg.
Daim ntawv SPE-192862 piav qhia txog cov tswv yim uas ua rau muaj kev vam meej ntawm kev sim kev sim.Qhov kev tsom mus rau kev npaj, tso cov kav dej, thiab ntsuas qhov ua tau zoo ntawm HDPE liners kom tau txais cov kev paub uas xav tau los nrhiav kev tswj xyuas kev ncaj ncees rau kev ua haujlwm thoob plaws hauv cheeb tsam ntawm HDPE pipelines hauv cov kav dej.Qhov no siv cov tshuab roj thiab cov kav dej uas twb muaj lawm. Tsis yog-hlau HDPE liners tuaj yeem siv rau cov kav dej tshiab.Highlights cov kev coj ua zoo tshaj plaws rau kev tshem tawm cov kav dej tsis zoo vim kev puas tsuaj los ntawm kev xeb sab hauv.
Daim ntawv tag nrho piav qhia txog kev siv rau HDPE gaskets; gasket khoom xaiv, kev npaj, thiab kev teeb tsa ib ntus; huab cua to thiab hydrostatic kuaj; annular gas venting thiab saib xyuas; kab commissioning; thiab cov ncauj lus kom ntxaws tom qab kuaj cov txiaj ntsig.Lub Streamline Life Cycle Cost Analysis lub rooj qhia txog qhov kwv yees tus nqi-zoo ntawm cov pa roj carbon steel piv rau HDPE hauv ob sab phlu rau lwm txoj kev tiv thaiv corrosion, nrog rau cov tshuaj txhaj tshuaj thiab pigging, cov kav dej uas tsis yog xim hlau, thiab cov pa roj carbon monoxide liab qab. Lub flowline.Nws paub zoo tias flanges yog qhov ua tsis tiav vim kev ntxhov siab sab nraud.Manual venting ntawm flange qhov chaw tsis tsuas yog yuav tsum tau saib xyuas lub sijhawm, uas ua rau cov nqi khiav lag luam nce ntxiv, tab sis kuj ua rau cov pa roj permeable emissions mus rau qhov chaw. Txiav rau hauv ib lub qhov dej kaw.
Kev sim 5-xyoo lees paub tias kev siv HDPE hauv ob sab phlu hauv cov pa roj carbon steel yeeb nkab tuaj yeem txo cov kev xeb hauv cov kav dej los ntawm kev cais cov kav hlau los ntawm cov kua dej corrosive.
Ntxiv tus nqi los ntawm kev muab cov kev pabcuam uas tsis muaj kev cuam tshuam, tshem tawm cov pigging sab hauv kom tshem tawm cov nyiaj tso cia thiab cov kab mob, txuag cov nqi los ntawm kev tshem tawm cov kev xav tau ntawm cov tshuaj tiv thaiv scaling thiab biocides, thiab txo kev ua haujlwm.
Lub hom phiaj ntawm qhov kev ntsuam xyuas yog txhawm rau txo qis hauv corrosion ntawm cov kav dej thiab tiv thaiv kom tsis txhob poob ntawm cov khoom tseem ceeb.
Slotted HDPE liners nrog welded flangeless pob qij txha yog siv ua ke nrog lub rov txhaj tshuaj system raws li kev txhim kho raws li cov kev kawm tau kawm los ntawm thawj zaug xa tawm ntawm cov dawb HDPE liners nrog clips ntawm flanged terminals.
Raws li cov txheej txheem ua tiav thiab tsis ua haujlwm tau teev tseg rau tus tsav, tsis muaj qhov xau tau tshaj tawm hauv cov raj xa dej txij li kev teeb tsa.Ntau qhov kev sim thiab kev tshuaj xyuas los ntawm BIC tau pom tias qhov hnyav txo 3-5% hauv cov ntaub ntawv siv, uas tsis ua rau cov tshuaj degradation tom qab 5 xyoos ntawm kev siv. Qee qhov khawb tau pom tias tsis txuas ntxiv mus rau hauv cov kab nrib pleb.Yog li ntawd, nws raug nquahu kom txiav txim siab qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov khoom siv hauv qab no. Cov teeb meem yuav tsum yog lub hom phiaj tseem ceeb, qhov twg HDPE hauv ob sab phlu xaiv (xws li twb tau txheeb xyuas kev txhim kho xws li hloov flanges nrog connectors thiab txuas ntxiv rau hauv ob sab phlu thiab siv ib daim tshev valve nyob rau hauv ob sab phlu kom kov yeej cov pa permeability ntawm lub hauv ob sab phlu) yog ib tug txhim khu kev qha kev daws teeb meem.
Cov thev naus laus zis no tshem tawm qhov kev hem thawj ntawm kev xeb sab hauv thiab muab kev txuag nyiaj tseem ceeb hauv kev siv nyiaj thaum lub sij hawm kho cov txheej txheem tshuaj, vim tsis muaj kev kho tshuaj.
Field validation ntawm cov thev naus laus zis tau muaj kev cuam tshuam zoo rau cov neeg ua haujlwm 'flowline kev tswj hwm kev ncaj ncees, muab ntau txoj hauv kev rau kev tswj xyuas cov dej ntws hauv kev txhim kho corrosion, txo cov nqi tag nrho thiab txhim kho HSE kev ua haujlwm.
HDPE hauv ob sab phlu thev naus laus zis tau pom zoo rau cov chaw roj thiab roj uas twb muaj lawm uas cov kav dej xau thiab cov dej txhaj tshuaj cuam tshuam muaj ntau.
Daim ntawv thov no yuav txo tus naj npawb ntawm flowline tsis ua hauj lwm los ntawm kev xau sab hauv, txuas ntxiv lub neej ntws, thiab nce cov khoom tsim tau.
Kev tsim kho tshiab tag nrho tuaj yeem siv cov thev naus laus zis no rau hauv-kab kev tiv thaiv corrosion thiab txuag nqi ntawm kev saib xyuas cov haujlwm.
Tsab ntawv xov xwm no tau sau los ntawm JPT Technical Editor Judy Feder thiab muaj cov ntsiab lus tseem ceeb los ntawm SPE 192862 daim ntawv, "Innovative Field Trial Tests of Flangeless Grooved HDPE Liner Application in a Super Gigantic Field for Oil Flowline Internal Corrosion Management" los ntawm Abby Kalio Amabi Tiji, SPE, Marwan Hammars Kumar Grande thiab siv ADNOC; Mohamed Ali Awadh, Borouge PTE; Nicholas Herbig, Jeff Schell thiab Ted Compton ntawm United Cov Kev Pabcuam Tshwj Xeeb rau 2018 2018 hauv Abu Dhabi, Kaum Ib Hlis 12-15 Npaj rau Abu Dhabi International Petroleum Exhibition thiab Conference.Cov ntawv no tsis tau raug tshuaj xyuas.
Phau ntawv Journal of Petroleum Technology yog cov ntawv xov xwm tseem ceeb ntawm Society of Petroleum Engineers, muab cov lus qhia luv luv thiab cov yam ntxwv ntawm kev nce qib hauv kev tshawb nrhiav thiab tsim cov thev naus laus zis, roj thiab roj teeb meem kev lag luam, thiab xov xwm txog SPE thiab nws cov tswv cuab.