Kev tshawb fawb tshiab ntawm cov titanium alloy hauv cov roj cov kav dej kom zoo nyob rau hauv cov kev mob geological

As China's conventional oil and gas resources become increasingly depleted, oil extraction is gradually shifting towards extreme geological environments such as ultra deep layers (>4000 meters), high temperatures (>150 ℃), high pressures (>70 MPa), and high sulfur (H ₂ S concentration>5%). Kev txhim kho ntawm cov roj tob thiab roj av sawv cev los ntawm Tarim Oilfield tau tso rau tom ntej kev ua tau zoo rau cov roj zoo.

Cov roj av roj carbon hlau thiab stainless hlau cov roj uas zoo nyob rau hauv lub zog ntawm 400 degree kev ntxhov siab corrosion (pab lub neej luv los ntawm ntau dua 50%). Yog li ntawd, titanium alloy cov ntaub ntawv nrog kev ua tau zoo tshaj plaws tau dhau los ua lwm txoj kev xaiv tshwj xeeb tshaj plaws.
Kev tshawb fawb tshaj tawm pom tias UN tsis R55400 (ti {{1} v ren) + titanium alloy tsim nyob rau hauv Tebchaws Asmeskas EngineeringDaim ntawv thov tus nqi:
Mechanical properties: Room temperature tensile strength ≥ 895MPa, 400 ℃ high temperature strength retention rate>85%
Corrosion Kuj: Txhua xyoo Corrosion tus nqi<0.02mm in an environment containing 5% H ₂ S
Creep Kuj: Raws li cov xwm txheej ntawm 300 degree \/ clree, tus nqi nkag yog tsawg dua 1 × 10 ⁻⁷ s ⁻¹
Txawm li cas los xij, lub alloy muaj cov ntsiab lus hlau zoo xws li 4% Ruthenium, ua rau cov khoom siv them rau $ 120 \/ kg, uas txwv cov ntawv thov loj. Cov txheej txheem tseem ceeb tam sim no suav nrog:
Kev loj hlob ntawm tus nqi qis - ntaus titanium alloys (xws li ti ... {2}}}, nrog tus nqi txo ntawm 40%)
Hmoov metallurgy nyob ze rau cov cuab yeej thev naus laus zis (cov khoom siv cov khoom siv tau nce mus rau 90%)
Ntau Txheej Txheem Composite Teating Technology (Corrosion Kuj nce ntxiv los ntawm 3 zaug)

Kev lag luam huab cua qhia tias lub ntiaj teb titanium alloy roj kev loj hlob ntawm kev lag luam txhua xyoo ntawm "kev tshawb fawb hauv nruab nrab xyoo Nws raug nquahu kom ua ntej ua yeeb yam kev siv roj ua ke xws li Tichological iteration los ntawm kev ua haujlwm ua haujlwm.
Cov khoom siv thev naus laus zis no yuav tau los daws cov teeb meem "bottleneck" cov teeb meem roj kev sib zog ntawm Tuam Tshoj cov peev txheej roj av thiab kev txhawb nqa nyiaj tseem ceeb rau kev tswj hwm lub ntiaj teb kev nyab xeeb.