Raws li kev tshawb nrhiav roj thiab roj thoob ntiaj teb txuas ntxiv mus rau hauv ultra- dej tob-tshaj 3,000 meters- cov teb ntau ntxiv yog tus cwj pwm los ntawm kev siab - siab, siab - kub (HPHT) thiab siab concentration ntawm hydrogen sulfide (H₂S) thiab carbon dioxide (CO). Nyob rau hauv xws li huab ib puag ncig, kev ua tau zoo ntawm cov khoom siv ncaj qha txiav txim siab qhov project kev nyab xeeb thiab kev lag luam muaj txiaj ntsig.
Titanium alloys, nrog lawv cov khoom sib xyaw tshwj xeeb, tau tshwm sim los ua cov khoom siv tseem ceeb rau kev tsim cov roj hauv dej thiab roj.
Core Advantages ntawm Titanium Alloys
Inherent Resistance rau Stress Corrosion Cracking
Hauv cov chaw pabcuam qaub uas muaj hydrogen sulfide, kev ntxhov siab corrosion cracking (SSC) sawv cev rau ib qho kev hem thawj loj tshaj plaws rau kev ncaj ncees ntawm cov khoom siv. Titanium alloys muaj lub ntuj tiv thaiv rau SSC induced los ntawm H₂S thiab chlorides.
Raws li NACE MR0175/ISO 15156 tus qauv, titanium alloys tuaj yeem siv rau hauv siab -H₂S ib puag ncig yam tsis tas yuav muaj cov tshuaj tiv thaiv corrosion lossis kev tswj nruj nruj. Qhov no tshem tawm qhov yuav tsum tau ua rau cov tshuaj txhaj tshuaj complex, ua kom yooj yim subsea infrastructure thaum txo cov peev thiab kev siv nyiaj ua haujlwm.
Kev tiv thaiv rau Seawater Corrosion
Cov khoom siv subsea tseem nyob hauv dej hiav txwv thoob plaws hauv nws lub neej ua haujlwm, ua rau kev tiv thaiv corrosion yog qhov kev txhawj xeeb tseem ceeb. Titanium nthuav qhia tshwj xeeb rau cov dej hiav txwv corrosion- nws tsis raug kev txom nyem los ntawm pitting, crevice corrosion, los yog yaig-corrosion, tsis hais qhov khiav ceev.
Kev sim tau pom tias titanium tseem tsis cuam tshuam rau hauv cov dej hiav txwv ntws ntawm qhov nrawm tshaj 20 meters ib ob. Rau cov ntawv thov dej sib sib zog nqus qhov twg cov dej ntws siab tsis tuaj yeem zam tau, cov yam ntxwv no muab qhov txiaj ntsig zoo ntawm kev ntseeg siab.
Qhov hnyav txo
Titanium alloys muab lub zog - rau - qhov hnyav piv kwv yees li 1.4 npaug ntawm cov hlau. Thaum siv rau cov khoom siv hauv dej hiav txwv xws li ntoo Christmas thiab manifolds, titanium kev tsim kho tuaj yeem txo qhov hnyav ntawm 30 mus rau 50 feem pua.
Qhov kev txo qhov hnyav no txhais ua cov txiaj ntsig zoo: qis dua crane muaj peev xwm yuav tsum tau rau cov nkoj teeb tsa, yooj yim buoyancy module tsim, thiab txo lub sijhawm thiab cov nqi. Rau cov dej num hauv dej tob, cov txiaj ntsig zoo no pab ncaj qha rau tag nrho cov phiaj xwm kev lag luam.
Superior Fatigue Performance
Rau cov khoom uas raug rau dynamic loading -xws li risers thiab suspension systems-titanium alloys qhia tau zoo heev qaug zog. Raws li kev thauj mus los ntawm cov dej hiav txwv tam sim no thiab lub nkoj txav, titanium tswj kev ruaj ntseg ntawm lub neej ntawm 20 mus rau 30 xyoo, txo cov kev xav tau ntawm kev saib xyuas thiab kev hloov pauv.
Daim ntawv thov teb
Titanium Risers
Hauv cov cheeb tsam hauv dej tob xws li Gulf of Mexico, titanium steel catenary risers tau ua tiav tiav rau ntau tshaj kaum xyoo. Cov risers no ua haujlwm nyob rau hauv cov kev pabcuam qaub uas tsis muaj tshuaj tiv thaiv, nrog rau cov khoom siv uas tseem nyob hauv lub suab zoo-ua kom pom titanium qhov kev ntseeg tau nyob rau hauv cov xwm txheej zoo.
Titanium Christmas tsob ntoo
Nyob rau hauv ultra- kev txhim kho dej tob xws li Brazil's pre- thaj av ntsev, titanium Christmas ntoo tau pab kom txo tau qhov hnyav ntau. Cov khoom siv sib zog ua kom yooj yim rau kev teeb tsa thiab ua kom yooj yim rau kev teeb tsa xws li hloov pauv tau yooj yim, nthuav dav ntau yam kev daws teeb meem muaj rau kev txhim kho dej tob.
Titanium Downhole Tubing
Nyob rau hauv siab -H₂S gas teb thoob plaws sab hnub tuaj Asia, titanium downhole tubing tau ua tiav yam tsis muaj corrosion inhibitors. Txoj hauv kev no tshem tawm qhov xav tau ntawm cov tshuaj txhaj tshuaj thiab kev saib xyuas cuam tshuam, ua rau txo qis kev siv nyiaj.
Lifecycle Economics
Thaum titanium alloys nqa cov khoom siv siab dua tus nqi piv rau cov khoom siv sib txawv, daim duab kev lag luam lifecycle qhia ib zaj dab neeg sib txawv:
Tshem tawm cov tshuaj txhaj tshuaj
Tsis muaj inhibitor kev xa khoom infrastructure txhais mus rau hauv kev txuag peev tseem ceeb thiab txo cov kev tu ncua tsis tu ncua.
Txo kev cuam tshuam ntau zaus
Kev cuam tshuam hauv dej tob yuav ua rau cov nqi txhua hnub; titanium qhov kev ntseeg siab txo qis qhov xav tau ntawm kev kho tsis tau npaj tseg.
Tsawg tus nqi installation
Kev txuag hnyav tuaj yeem txo cov nqi ntawm cov nkoj thauj khoom los ntawm 15 mus rau 25 feem pua.
Kev ruaj ntseg ntau lawm
Cov dej sib sib zog nqus feem ntau tsim cov nqi tsim khoom txhua hnub; Kev ntseeg ntawm cov cuab yeej siv ua ib qho kev tiv thaiv tseem ceeb tiv thaiv kev kaw tsis tau them nqi.
Xaus
Raws li cov roj thiab cov roj sib sib zog nqus tau nce mus rau qhov xav tau ntau ntxiv, cov ntaub ntawv xav tau txuas ntxiv mus. Titanium alloys, nrog rau lawv qhov tshwj xeeb corrosion kuj, lub teeb yuag yam ntxwv, thiab muaj pov thawj kev ntseeg tau, yog tsim lawv tus kheej raws li ib tug nyiam cov khoom siv rau HPHT qaub daim ntaub ntawv.
Rau cov neeg ua haujlwm hauv dej tob, titanium sawv cev tsis yog tsuas yog xaiv cov khoom siv xwb, tab sis yog lub hauv paus rau kev nyab xeeb, txhim khu kev qha, thiab kev lag luam zoo.
