Abstract: Methods are provided for sequestering a pollutant gas of carbon dioxide (CO2) gas and/or hydrogen sulfide (H2S) gas in a subterranean reservoir. In one method, a carrier gas containing pollutant-sorbent particles (e.g., nanoparticles) is pumped into the subterranean reservoir, the pollutant-sorbent particles attach to the subterranean reservoir, the pollutant gas is pumped into the subterranean reservoir, and the pollutant-sorbent particles attached to the subterranean reservoir adsorb the pollutant gas. In another method, pollutant gas is introduced into a carrier liquid containing pollutant-sorbent particles to produce a pollutant-rich carrier liquid, the pollutant-rich carrier liquid is pumped into the subterranean reservoir, and the pollutant-rich carrier liquid is allowed to remain in the subterranean reservoir.

Abstract: Methods are provided for sequestering a pollutant gas of carbon dioxide (CO2) gas and/or hydrogen sulfide (H2S) gas in a subterranean reservoir. In one method, a carrier gas containing pollutant-sorbent particles (e.g., nanoparticles) is pumped into the subterranean reservoir, the pollutant-sorbent particles attach to the subterranean reservoir, the pollutant gas is pumped into the subterranean reservoir, and the pollutant-sorbent particles attached to the subterranean reservoir adsorb the pollutant gas. In another method, pollutant gas is introduced into a carrier liquid containing pollutant-sorbent particles to produce a pollutant-rich carrier liquid, the pollutant-rich carrier liquid is pumped into the subterranean reservoir, and the pollutant-rich carrier liquid is allowed to remain in the subterranean reservoir.

Abstract: A method is provided for producing hydrocarbons from a subterranean reservoir. A mixture of steam and H2S-sorbent particles (e.g., nanoparticles) is injected into the subterranean reservoir. This may be performed during the steam phase of a steam injection operation, such as steam assisted gravity drainage (SAGD), steam flooding, or cyclic steam stimulation, which is performed on the reservoir. The injected steam reduces the viscosity of the hydrocarbons in the subterranean formation. The injected H2S-sorbent particles attach to the subterranean reservoir and adsorb H2S therein. The hydrocarbons are produced to the surface, without producing the H2S-sorbent particles with adsorbed H2S that remain attached to the subterranean reservoir.

Abstract: Methods are provided that facilitate the production of hydrocarbons from subterranean formations, involving the mobilization of an immobile heavy oil in situ by gravity displacement. In effect, heavy oil is mobilized by dense aqueous gravity displacement (DAGD), in a process that generally involves injecting a dense, heated aqueous injection fluid into the formation into an injection zone that is in fluid communication with immobile heavy oil. The injection well is operated so that the injection fluid mobilizes and displaces the immobile heavy oil, to produce an expanding upper zone of mobilized heavy oil amenable to production.

Abstract: Methods are provided that facilitate the production of hydrocarbons from subterranean formations, involving the mobilization of an immobile heavy oil in situ by gravity displacement. In effect, heavy oil is mobilized by dense aqueous gravity displacement (DAGD), in a process that generally involves injecting a dense, heated aqueous injection fluid into the formation into an injection zone that is in fluid communication with immobile heavy oil. The injection well is operated so that the injection fluid mobilizes and displaces the immobile heavy oil, to produce an expanding upper zone of mobilized heavy oil amenable to production.

Abstract: The present disclosure provides a process and system for treating a feed diluent to produce a retentate product that is enriched in a heavy diluent component. The process includes: applying the feed diluent to a feed side of an organic solvent nanofiltration membrane; causing the light diluent component in the diluent to preferentially pass through the membrane in comparison to the light diluent component in the feed diluent; and producing the retentate product that is enriched in the heavy diluent component in comparison to the heavy diluent component in the feed diluent.

Abstract: The present disclosure provides a process and system for treating a feed diluent to produce a retentate product that is enriched in a heavy diluent component. The process includes: applying the feed diluent to a feed side of an organic solvent nanofiltration membrane; causing the light diluent component in the diluent to preferentially pass through the membrane in comparison to the light diluent component in the feed diluent; and producing the retentate product that is enriched in the heavy diluent component in comparison to the heavy diluent component in the feed diluent.

Abstract: A process for recovering water from an emulsion produced from a hydrocarbon production operation. The process includes heating the emulsion to generate water vapor, separating the water vapor from oil in the emulsion, compressing the water vapor separated from the oil, thereby increasing pressure to provide condensate, wherein heat generated from compression of the water vapor to provide condensate is utilized to provide heat for heating the emulsion, and separating at least one of remaining oil, gas, or water from the condensate.