Mitigating CO2 Leakage by Immobilizing CO2 into Solid Reaction Products

Wasch, L.J.; Wollenweber, Jens; Neele, Filip; Fleury, Marc

doi:10.1016/j.egypro.2017.03.1562

Cited by 6 publications

(4 citation statements)

References 15 publications

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“…A modelling study on leakage remediation above a leaking fault through a caprock indicated a final leakage reduction of up to 95% [25]. Experimental [23] and modelling results [24,25] for caprock leakage mitigation support the feasibility of the method for reactive clogging by injecting a CO 2 -reactive solution into a high permeable leak path to form solid reactants that clog the leak path, reduce permeability and stop leakage. The main objective of this study is to assess the possibility of reactive leakage mitigation for wellbore annulus leakage.…”

Section: Introductionmentioning

confidence: 91%

“…The process of natural sealing of the microannulus by mineral precipitation indicates a potential for chemical clogging of the annulus leak path. Clogging with calcite or silica has already been proposed for a CO 2 leak path through the caprock [23][24][25]. To induce mineralization in a leak path, it was proposed to inject a silicaor calcium-rich suspension or solution into the CO 2 -containing environment.…”

Section: Introductionmentioning

confidence: 99%

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Injection of a CO2-Reactive Solution for Wellbore Annulus Leakage Remediation

Wasch

Koenen

2019

Minerals

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Driven by concerns for safe storage of CO2, substantial effort has been directed on wellbore integrity simulations over the last decade. Since large scale demonstrations of CO2 storage are planned for the near-future, numerical tools predicting wellbore integrity at field scale are essential to capture the processes of potential leakage and assist in designing leakage mitigation measures. Following this need, we developed a field-scale wellbore model incorporating (1) a de-bonded interface between cement and rock, (2) buoyancy/pressure driven (microannulus) flow of brine and CO2, (3) CO2 diffusion and reactivity with cement and (4) chemical cement-rock interaction. The model is aimed at predicting leakage through the microannulus and specifically at assessing methods for CO2 leakage remediation. The simulations show that for a low enough initial leakage rate, CO2 leakage is self-limiting due to natural sealing of the microannulus by mineral precipitation. With a high leakage rate, CO2 leakage results in progressive cement leaching. In case of sustained leakage, a CO2 reactive solution can be injected in the microannulus to induce calcite precipitation and block the leak path. The simulations showed full clogging of the leak path and increased sealing with time after remediation, indicating the robustness of the leakage remediation by mineral precipitation.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Injection of a CO2-Reactive Solution for Wellbore Annulus Leakage Remediation

Wasch

Koenen

2019

Minerals

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“…Hence, some measures should be implemented due to the the existence of discrete fracture networks. As one of the most effective methods, using CO 2 -reactive or CO 2 -consuming solution to form precipitation clogging the voids of the formation to reduce the porosity and hydraulic conductivity of the rock and minimize CO 2 emission have been developed [1][2][3][4][5]. Thus, it's very important to evaluate the effectiveness of CO 2 sequestration using portland cement in geological reservoir.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Effectiveness of CO2 Sequestration Using Portland Cement in Geological Reservoir Based on Unified Pipe-network Method

Yan

Sun

et al. 2020

Energies

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In this paper, we first recapitulate some basic notions of the CO 2 sequestration and numerical model. Next, a mixed model is employed into the CO 2 sequestration framework, for simulating CO 2 geological sequestration processes. The last part of the paper makes extensions to evaluation of the effectiveness of CO 2 sequestration with respect to atmospheric pressure, formation temperature, the initial reactant concentration, fracture aperture, and fracture dip. The results show that reactive Portland cement has a great impact on the effectiveness of CO 2 sequestration, while the proposed mixed model is robust in simulation.

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“…The effectiveness of using vertical and horizontal extraction wells to remove the CO 2 could be analyzed. Moreover, injecting water to dissolve the gaseous CO 2 and reduce the overall concentration and increase capillary trapping are worth of consideration [53][54][55].…”

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confidence: 99%

Numerical Modeling of CO2 Migration in Saline Aquifers of Selected Areas in the Upper Silesian Coal Basin in Poland

Urych

Smoliński

2019

Energies

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Determining the characteristics of the dynamic behavior of carbon dioxide in a rock mass is a stage in the process of assessing a potential CO2 storage reservoir. The aim of this study was to analyze the process of CO2 storage in saline aquifers of the selected regions of the Upper Silesian Coal Basin in Poland. The construction of dynamic simulation models was based on static models of real deposit structures developed on a regional scale. Different simulation variants of the CO2 storage process were adopted, varying in terms of injection efficiency and duration of individual simulation phases. The analysis examined the influence of the degree of hydrodynamic openness of the structure on the CO2 storage process, in each of the variants. The results of numerical simulations showed that among the three analyzed geological formations, the Dębowiec formation is the most prospective for potential CO2 storage and is characterized by the most favorable geological and hydrogeological parameters. In the best variant of the simulation, in which the safety of CO2 storage in the rock mass was taken into account, the total amount of CO2 injected in a single directional well was approximately 8.54 million Mg of CO2 during 25 years of injection.

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Mitigating CO2 Leakage by Immobilizing CO2 into Solid Reaction Products

Cited by 6 publications

References 15 publications

Injection of a CO2-Reactive Solution for Wellbore Annulus Leakage Remediation

Injection of a CO2-Reactive Solution for Wellbore Annulus Leakage Remediation

Evaluation of Effectiveness of CO2 Sequestration Using Portland Cement in Geological Reservoir Based on Unified Pipe-network Method

Numerical Modeling of CO2 Migration in Saline Aquifers of Selected Areas in the Upper Silesian Coal Basin in Poland

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