Carbon capture and storage

Fig. 1—XRCT images of an unreacted basalt core showing a fine-grained matrix with distributed intergranular and vesicular porosity in axial and transverse views.

Oilfield chemistry

Secondary Mineral Formation Examined During CO₂/Basalt Interaction

This paper presents an experiment investigating dissolution of basaltic primary minerals and conditions favorable for secondary phase formation under deep subsurface storage conditions.

Fig. 1—SEM/energy-dispersive X-ray spectroscopy image of internal pore structure of limestone sample after treatment with carbonated brine and additives showing FeCO3 precipitation.

Oilfield chemistry

Alkaline Earth Metals Enhance CO₂ Mineralization in Saline Aquifers

This study aims to investigate the efficacy of chemical additives strontium chloride and barium hydroxide in accelerating CO₂ trapping mechanisms, their effect on dissolution of carbonate-bearing minerals, and resulting poroelastic changes in the host rock.

Fig. 1—(Left) Simple-cycle power plant with four gas turbines and WHRUs; (right) combined-cycle arrangement with equal heat and power capability in typical FPSO modules (22×22 m).

Offshore/subsea systems

Combined-Cycle Approach Holds Potential for Offshore-Facility Carbon Capture

This paper describes the potential of combined-cycle technology (use of a gas turbine and a steam turbine together to turn fuel into electricity) in offshore carbon-capture applications.