Abstract: The present disclosure provides a method and an apparatus for adjusting screen brightness of a head-mounted display device, and the head-mounted display device. The method includes: acquiring current pupil information of a wearer of the head-mounted display device and current ambient brightness information; determining a target screen brightness value based on the current ambient brightness information and the current pupil information; and adjusting the screen brightness according to the target screen brightness value.

Abstract: The present disclosure relates to production of a bitumen product from a subterranean reservoir with improved processes for solvent recovery at end of production or near end of production (i.e., “late life”) of heavy oil from a solvent-based heavy oil extraction process. The process include converting at least some of the wells in the subterranean reservoir, and injecting gas phase dilution agent into the reservoir, converting at least a portion of the liquid solvent to a gas phase, and recovering, in the vapor phase, at least a portion of the solvent remaining in the reservoir.

Abstract: Herein is a cyclic solvent-dominated recovery process (CSDRP) for recovering hydrocarbons from an underground reservoir. The cyclic solvent process involves using an injection well to inject a viscosity-reducing solvent into the underground reservoir. Reduced viscosity oil is produced to the surface using the same well used to inject solvent. The process of alternately injecting solvent and producing a solvent/viscous oil blend through the same well continues in a series of cycles until additional cycles are no longer economical. To contact uncovered hydrocarbons between solvent fingers, the injection includes alternating injection and production, for creating an advance-retreat movement.

Abstract: Described is a cyclic solvent-dominated recovery process (CSDRP) for recovering hydrocarbons from an underground reservoir. The cyclic solvent process involves using an injection well to inject a viscosity-reducing solvent into the underground reservoir. Reduced viscosity oil is produced to the surface using the same well used to inject solvent. The process of alternately injecting solvent and producing a solvent/viscous oil blend through the same well continues in a series of cycles until additional cycles are no longer economical. To contact uncovered hydrocarbons between solvent fingers, the injection includes alternating injection and production, for creating an advance-retreat movement.