The possibility of using dawsonite mineral trapping as a carbon capture and storage (CCS) strategy intrigues many. In this study, we used dawsonite-rich (∼10%) CO2 gas reservoir in the Hailar basin northern China natural analogue site, along with numerical modeling, to demonstrate that large amount can be generated sandstone formations, provided sufficient Na-rich feldspar are available. While ...

Developing a method for secure sequestration of anthropogenic carbon dioxide in geological formations is one of our most pressing global scientific problems. Injection into deep-sea basalt formations provides unique and significant advantages over other potential geological storage options, including (i) vast reservoir capacities sufficient to accommodate centuries-long U.S. production of fossi...

Depleted natural gas reservoirs are a promising target for Carbon Sequestration with Enhanced Gas Recovery (CSEGR). The focus of this study is on evaluating the importance of Joule-Thomson cooling during CO2 injection into depleted natural gas reservoirs. Joule-Thomson cooling is the adiabatic cooling that accompanies the expansion of a real gas. If Joule-Thomson cooling were extreme, injectivi...

Enhanced oil recovery using nanoparticles is a promising method. However, when injected into reservoir, can block pores and cause permeability damage. Therefore, enhancing their performance to lower the damage effect crucial. This study investigated of pH alteration through carbon dioxide (CO2) injection on limestone caused by an aluminum oxide (α-Al2O3) nanofluid. The methodology involved nano...

During tertiary miscible gas injection direct contact between gas and oil can be prevented by water surrounding residual oil. The principal aim of our study is to assess the importance of this waterblocking phenomenon in multicomponent gas injection. We study this process using a multicomponent porescale model. Light components in the gas dissolve in the water and diffuse through the water to r...

The use of CO2 as a heat transfer fluid has been proposed as an alternative to water in enhanced geothermal systems (EGS). Numerical simulations have shown that under expected EGS operating conditions, CO2 could achieve more efficient heat extraction performance than water. We have conducted laboratory experiments with dry supercritical CO2 in order to test and refine the theoretically derived ...