Determining the corrosive potential of CO2 transport pipeline in high pCO2–water environments

Choi, Yo Han; Nešić, Srdjan

doi:10.1016/j.ijggc.2010.11.008

Cited by 185 publications

(100 citation statements)

References 21 publications

(34 reference statements)

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“…where V c is the corrosion rate of the specimen in mm/year, ∆m is the weight loss in grams, is the density of the steel in g/cm 3 , A is the exposed area in cm 2 and t is the immersion time in hours.…”

Section: Materials and Preparationmentioning

confidence: 99%

“…1 O 2 is particularly important in influencing corrosion mechanisms as it provides additional cathodic reaction paths for corrosion whilst also inhibiting the formation of protective iron carbonate (FeCO 3 ) which has been shown to form in water-containing supercritical CO 2 environments. [2][3][4] Furthermore, when SO 2 and O 2 are present together, the formation of sulfurous (H 2 SO 3 ) and/or sulfuric (H 2 SO 4 ) acid is permitted which can play a key role in not only the corrosion mechanisms, but also in the nature and morphology of any corrosion products formed, which may inhibit or accelerate the corrosion kinetics.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4] Furthermore, when SO 2 and O 2 are present together, the formation of sulfurous (H 2 SO 3 ) and/or sulfuric (H 2 SO 4 ) acid is permitted which can play a key role in not only the corrosion mechanisms, but also in the nature and morphology of any corrosion products formed, which may inhibit or accelerate the corrosion kinetics.…”

Section: Introductionmentioning

confidence: 99%

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Understanding the Influence of SO₂and O₂on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO₂

Hua¹,

Barker²,

Neville³

2015

CORROSION

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The general and localized corrosion behaviour of carbon steel (UNS G15130) in water-saturated supercritical CO 2 conditions containing O 2 and SO 2 at 35°C and 8 MPa is evaluated with a view to the effect this may have on pipeline integrity during dense-phase CO 2 transport. The results indicate that crystalline FeCO 3 forms in the presence of solely water and CO 2 . However, the combined introduction of small concentrations of O 2 and SO 2 (as low as 20 and 2 ppm (mole), respectively) change FeCO 3 crystal morphology. Increasing the concentration of SO 2 to 50 and 100 ppm whilst maintaining O 2 content at 20 ppm resulted in the formation of FeSO 3 ·3H 2 O as well as FeCO 3 . In conjunction with the change in corrosion product chemistry and morphology, general corrosion rates of samples increased from 0.1 mm/year to 0.7 mm/year as a result of the rise in SO 2 content from 0 to 100 ppm (based on 48 hour experiments), whilst localized corrosion rates (determined from surface profilometry) rose from 0.9 to 1.7 mm/year. The research demonstrates that localized corrosion measurements are a fundamental requirement when determining the threat posed to carbon steel pipelines during dense-phase CO 2 transport, exceeding the uniform corrosion rate by nearly one order of magnitude under certain conditions. Additional tests involving solution replenishment over 48 hours indicated that the higher corrosion rates observed in the presence of SO 2 did not present the worst case scenario corrosion rates and highlight the importance of having a system where the process fluid is continuously replenished. The corrosion product morphology and chemistry was identified through a combination of scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD).

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Section: Materials and Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Understanding the Influence of SO₂and O₂on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO₂

Hua¹,

Barker²,

Neville³

2015

CORROSION

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“…In vapor-saturated CO 2 system, corrosion is initiated due to the condensation of water on the coupon surface as a result of small variation in pressure and temperature. Once the water condenses onto the coupon surface, it will be saturated with both CO 2 and Fe 2+ from the dissolution of the steel [27,37]. So, the corrosion phenomenon could occur in the coupon surface at vapor-saturated CO 2 condition.…”

Section: Corrosion Mechanismmentioning

confidence: 99%

Corrosion behavior of low-alloy steel with martensite/ferrite microstructure at vapor-saturated CO2 and CO2-saturated brine conditions

Liu

Gao

et al. 2015

Applied Surface Science

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“…However, the amount of dissolved CO 2 at operative depths typical for carbon sequestration into basaltic aquifers (Alfredsson et al, 2013) is in the ratio 30–70 g CO 2 per kg H 2 O (Choi & Nešić, 2011). Consequently, the large amounts of water to be injected during subsurface CO 2 storage efforts may trigger earthquakes in response to pore fluid overpressures in the vicinity of preexisting faults (Zoback & Gorelick, 2012).…”

Section: Introductionmentioning

confidence: 99%

Frictional Instabilities and Carbonation of Basalts Triggered by Injection of Pressurized H₂O‐ and CO₂‐ Rich Fluids

Giacomel

Spagnuolo

Nazzari

et al. 2018

Geophysical Research Letters

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The safe application of geological carbon storage depends also on the seismic hazard associated with fluid injection. In this regard, we performed friction experiments using a rotary shear apparatus on precut basalts with variable degree of hydrothermal alteration by injecting distilled H2O, pure CO2, and H2O + CO2 fluid mixtures under temperature, fluid pressure, and stress conditions relevant for large‐scale subsurface CO2 storage reservoirs. In all experiments, seismic slip was preceded by short‐lived slip bursts. Seismic slip occurred at equivalent fluid pressures and normal stresses regardless of the fluid injected and degree of alteration of basalts. Injection of fluids caused also carbonation reactions and crystallization of new dolomite grains in the basalt‐hosted faults sheared in H2O + CO2 fluid mixtures. Fast mineral carbonation in the experiments might be explained by shear heating during seismic slip, evidencing the high chemical reactivity of basalts to H2O + CO2 mixtures.

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Determining the corrosive potential of CO2 transport pipeline in high pCO2–water environments

Cited by 185 publications

References 21 publications

Understanding the Influence of SO₂and O₂on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO₂

Understanding the Influence of SO₂and O₂on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO₂

Corrosion behavior of low-alloy steel with martensite/ferrite microstructure at vapor-saturated CO2 and CO2-saturated brine conditions

Frictional Instabilities and Carbonation of Basalts Triggered by Injection of Pressurized H₂O‐ and CO₂‐ Rich Fluids

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Determining the corrosive potential of CO2 transport pipeline in high pCO2–water environments

Cited by 185 publications

References 21 publications

Understanding the Influence of SO2and O2on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO2

Understanding the Influence of SO2and O2on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO2

Corrosion behavior of low-alloy steel with martensite/ferrite microstructure at vapor-saturated CO2 and CO2-saturated brine conditions

Frictional Instabilities and Carbonation of Basalts Triggered by Injection of Pressurized H2O‐ and CO2‐ Rich Fluids

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Product

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Understanding the Influence of SO₂and O₂on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO₂

Understanding the Influence of SO₂and O₂on the Corrosion of Carbon Steel in Water-Saturated Supercritical CO₂

Frictional Instabilities and Carbonation of Basalts Triggered by Injection of Pressurized H₂O‐ and CO₂‐ Rich Fluids