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

Abstract

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.

Keywords

• co₂ sequestration
• multi-field analysis
• unified pipe-network method
• reactive portland cement