Experimental assessment of well integrity for CO2 geological storage: Batch experimental results on geochemical interactions between a CO2–brine mixture and a sandstone–cement–steel sample

Mito, Saeko; Xue, Ziqiu; Satoh, Hisao

doi:10.1016/j.ijggc.2015.06.007

Cited by 26 publications

(17 citation statements)

References 20 publications

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“…In addition, the steel casing was remained in nearly excellent condition and showed few signs of corrosion. Based on these results the predicted 30-year carbonation depth evaluated by logarithmic approximation was estimated at 4.5 mm for the wet-CO 2 condition and 0.76 mm for the CO 2 -saturated brine condition in the result of our other study [8]. Figure 4 shows the SEM-EDS maps of Ca, Na, Mg, Cl, and S at the cement/sandstone interface of the well composite samples after reaction under the wet-CO 2 condition (a) and the CO 2 -saturated brine condition (b) and the non-reacted sample (c).…”

Section: B Sem-eds Analysis At the Cement/sandstone Interfacementioning

confidence: 62%

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Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, μ-XRD, and μ-Raman Spectroscopy

Nakano

Mito

Xue

et al. 2016

e-J. Surf. Sci. Nanotech.

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We observed cement/sandstone interfaces after reaction with supercritical CO2 using SEM-EDS, µ-XRD, and µ-Raman spectroscopy in order to evaluate chemical reactions of well-cement in CO2 storage site. To model actual well in geological formation, we prepared a well composite sample consisting of steel casing, Portland cement, and Berea sandstone. The batch experiment was performed for 56 days under a condition of 10 MPa and 50• C. After the batch experiment, a carbonation zone appeared at the cement/sandstone interface, however, the carbonation depth was limited within a few millimeters and the inner part of the cement was not altered. The Ca concentration in the carbonation zone increased 13% in comparison to that in the unaltered cement zone while the Mg, Si, and S concentrations decreased significantly. The predominant crystalline phases in the carbonation zone were calcite, aragonite, and vaterite. In addition, sparse precipitation of CaCO3 was observed in the pore spaces of the sandstone along the cement/sandstone interface.

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Section: B Sem-eds Analysis At the Cement/sandstone Interfacementioning

confidence: 62%

“…We have studied a chemical interaction between well cement and supercritical CO 2 by laboratory experiments [7,8]. In this paper, we focused on the chemical reaction at the cement/sandstone interface with supercritical CO 2 based on SEM-EDS, µ-XRD, and µ-Raman spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, μ-XRD, and μ-Raman Spectroscopy

Nakano

Mito

Xue

et al. 2016

e-J. Surf. Sci. Nanotech.

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“…Zhang et al [23,24] investigated the reaction of two different pozzolan-amended (Class F fly ash, with~70% silica, alumina and Fe 2 O 3 ,~5% sulfate, and less than 20% CaO) wellbore cements (API RP 10B; 35 vol % pozzolan and 65 vol % pozzolan) being exposed to CO 2 and H 2 S gas mixtures and brine (one percent NaCl) at 323 K and 15.1 MPa for 2.5, 9, 28 and 90 days. The samples of the pozzolan-amended wellbore cement with 35 vol % pozzolan showed higher resistance against H 2 S. Mito et al [25] and Wolterbeek et al [26] investigated the influence of CO 2 -induced reactions on the mechanical behavior of fractured wellbore cement (class-G Portland cement). They found that the reaction with CO 2 did not produce further geomechanical weakening.…”

Section: Interaction Of Co 2 and Conventional Hydrated Cementsmentioning

confidence: 99%

The Conversion of Wollastonite to CaCO3 Considering Its Use for CCS Application as Cementitious Material

et al. 2018

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Abstract:The reaction of wollastonite (CaSiO 3 ) with CO 2 in the presence of aqueous solutions (H 2 O) and varied temperature conditions (296 K, 323 K, and 333 K) was investigated. The educts (CaSiO 3 ) and the products (CaCO 3 and SiO 2 ) were analyzed by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), and differential scanning calorimetry with thermogravimetry coupled with a mass spectrometer and infrared spectrometer (DSC-TG/MS/IR). The reaction rate increased significantly at higher temperatures and seemed less dependent on applied pressure. It could be shown that under the defined conditions wollastonite can be applied as a cementitious material for sealing wells considering CCS applications, because after 24 h the degree of conversion from CaSiO 3 to CaCO 3 at 333 K was very high (>90%). As anticipated, the most likely application of wollastonite as a cementitious material in CCS would be for sealing the well after injection of CO 2 in the reservoir.

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“…Samples of cement are aged under high CO 2 pressure and at different temperatures. Some studies focus on cement/rock interfaces, with the rock being sandstones (e.g., [9][10][11] Cao, Walsh, Mito), basalts (e.g., [12] Jung), shales (e.g., [4,13]), siltstones (e.g., [14] Newell), or claystones (e.g., [15] Manceau).…”

Section: Introductionmentioning

confidence: 99%

Experimental Modelling of the Caprock/Cement Interface Behaviour under CO2 Storage Conditions: Effect of Water and Supercritical CO2 from a Cathodoluminescence Study

et al. 2018

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Abstract:In the framework of CO 2 geological storage, one of the critical points leading to possible important CO 2 leakage is the behaviour of the different interfaces between the rocks and the injection wells. This paper discussed the results from an experimental modelling of the evolution of a caprock/cement interface under high pressure and temperature conditions. Batch experiments were performed with a caprock (Callovo-Oxfordian claystone of the Paris Basin) in contact with a cement (Portland class G) in the presence of supercritical CO 2 under dry or wet conditions. The mineralogical and mechanical evolution of the caprock, the Portland cement, and their interface submitted to the attack of carbonic acid either supercritical or dissolved in a saline water under geological conditions of pressure and temperature. This model should help to better understand the behaviour of interfaces in the proximal zone at the injection site and to prevent risks of leakage from this critical part of injection wells. After one month of ageing at 80 • C under 100 bar of CO 2 pressure, the caprock, the cement, and the interface between the caprock and cement are investigated with Scanning Electron Microscopy (SEM) and cathodoluminescence (CL). The main results reveal (i) the influence of the alteration conditions: with dry CO 2 , the carbonation of the cement is more extended than under wet conditions; (ii) successive phases of carbonate precipitation (calcite and aragonite) responsible for the loss of mechanical cohesion of the interfaces; (iii) the mineralogical and chemical evolution of the cement which undergoes successive phases of carbonation and leaching; (iv) the limited reactivity of the clayey caprock despite the acidic attack of CO 2 ; and (v) the influence of water on the transport mechanisms of dissolved species and thus on the location of mineral precipitations.

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Experimental assessment of well integrity for CO2 geological storage: Batch experimental results on geochemical interactions between a CO2–brine mixture and a sandstone–cement–steel sample

Cited by 26 publications

References 20 publications

Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, μ-XRD, and μ-Raman Spectroscopy

Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, μ-XRD, and μ-Raman Spectroscopy

The Conversion of Wollastonite to CaCO3 Considering Its Use for CCS Application as Cementitious Material

Experimental Modelling of the Caprock/Cement Interface Behaviour under CO2 Storage Conditions: Effect of Water and Supercritical CO2 from a Cathodoluminescence Study

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Experimental assessment of well integrity for CO2 geological storage: Batch experimental results on geochemical interactions between a CO2–brine mixture and a sandstone–cement–steel sample

Cited by 26 publications

References 20 publications

Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, &mu;-XRD, and &mu;-Raman Spectroscopy

Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, &mu;-XRD, and &mu;-Raman Spectroscopy

The Conversion of Wollastonite to CaCO3 Considering Its Use for CCS Application as Cementitious Material

Experimental Modelling of the Caprock/Cement Interface Behaviour under CO2 Storage Conditions: Effect of Water and Supercritical CO2 from a Cathodoluminescence Study

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Product

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Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, μ-XRD, and μ-Raman Spectroscopy

Observation of Cement/Sandstone Interface after Reaction with Supercritical CO<sub>2 </sub>Using SEM-EDS, μ-XRD, and μ-Raman Spectroscopy