... the supersaturation level of CO 2 in the solution, which facilitates the dissolution of rock minerals. After the reaction of chlorite minerals with CO 2 , the concentrations of Mg 2+ , Fe 2+ , and Al 3+ ions initially increased and then decreased, while the concentration of Si 4+ ions increased and then stabilized...

... injection dissolution geological formation interaction brine geochemistry modeling mineralization reaction kinetic mechanism geochemical reaction storage site reservoir rock Introduction The increasing concentration of carbon dioxide (CO 2 ) in the atmosphere due to anthropogenic...

...+ , and Cl - , remained largely stable, with only a slight increase in SO 4 2- due to gypsum dissolution. These results suggest that the impact of hydrogen on Class G cement is generally negligible, with minimal changes observed in overall mineral composition. While chemical additives offer some...

... process and has longtime effect on well integrity. Depending on the nature of losses (either induced or related to local dissolutions) the success rate is different when the induced losses can be cured with a high chance, and the one related to dissolutions may take a long time, and despite multiple...

... reaction reservoir upstream oil & gas membrane hydrate storage saline aquifer co2 storage leakage mineral dissolution separation Introduction The development of energy and its consumption have paralleled the evolution of humanities and societies on the planet earth. Developed...

... of calcite dissolution may soften the hydraulic fracture surfaces, resulting in proppants embedment and thus decreasing fracture conductivity for calcite-rich shales. Therefore, it is of vital importance to understand the impact of in-situ pyrite oxidation on fluid-shale interactions, particularly calcite...

... by means of geochemical modeling. A reactive transport geochemical modelling approach with a geochemical simulator PHREEQC (pH-REdox-EQuilibrium in C programing language) is applied in this paper to handle complex interplay of different geochemical effects such as ion exchange, rock mineral dissolution...

... computations were run to estimate permeability decrease along the core sample length after injection. Results show dissolution of dolomite and other high density minerals. Mineral dissolution dislodges fines particles which migrate during scCO 2 injection. Berea 1 and Berea 2 showed respectively 29% and 13...

... Microstructure society of petroleum engineers international journal Zhang sarmadivaleh carbonate reservoir live brine flooding capillary pressure fractal theory Iglauer reservoir dissolution Introduction Carbon dioxide capture and storage (CCS) is an effective way to reduce the carbon emission...

.... Reservoir Characterization Fluid Dynamics subsurface storage co 2 injection well Brine dissolution precipitation simulator mineral high co 2 saturation Upstream Oil & Gas Simulation porosity calcite reaction flow in porous media precipitation dissolution permeability reactive...

... experiment reservoir geomechanics scco 2 ultrasonic test dissolution injection Reservoir Characterization heterogeneity indentation moduli limestone geomechanical property society of petroleum engineers permeability enhanced recovery iglauer co 2 penetration depth ht chemical flooding...

... Abstract Although several researches have been conducted for CO 2 injection in shale gas reservoirs, there is definite lack of study that concentrates on the multi-component transport and geomechanical effect. This paper presents shale gas model for CO 2 injection considering dissolution...

... functions of pressure and temperature. In geological sequestration of CO 2 , behavior of the injected CO 2 undergoes multi-phase flow, dissolution into the aqueous phase, and reaction with rock. In aquifers of the closed boundary or open boundary with weak regional groundwater flow, densities of CO 2...

... occur which are not taken into account in conventional petroleum reservoir simulation. Convective mixing is predicted to occur, which greatly accelerates the dissolution of carbon dioxide in the saline formation water. This unusual phenomenon arises from the increase in the density of brine when...

... porosity formation 1 upstream oil & gas radial distance injection rate machine learning formation 2 numerical model acid mineral dissolution reactivity fraction acid concentration spe 64403 matrix plug Introduction Formation damage of oil and gas wells has been identified...

... and hydrochloric acid mixtures (generally described as mud acids) have been chosen to treat these formations since they dissolve clays from drilling mud and react with most constituents of naturally occurring sandstone. The dissolution of these materials will enlarge and interconnect pores, allowing the produced...