Systems and Methods For Pressure-Cycled Stimulation During Gravity Drainage Operations

A method of stimulating and producing viscous hydrocarbons from a subterranean formation that includes the viscous hydrocarbons, the method comprising:

• increasing a pressure within a stimulation well that extends within the subterranean formation to increase a reservoir pressure to a pressure that is above an upper pressure threshold that is greater than a bubble point pressure of the viscous hydrocarbons;
• decreasing the pressure within the stimulation well to decrease the reservoir pressure to a pressure that is below a lower pressure threshold that is less than the bubble point pressure of the viscous hydrocarbons;
• repeating the increasing the pressure and the decreasing the pressure for a plurality of stimulation cycles;
• and
• producing, as a reduced viscosity hydrocarbon stream, the viscous hydrocarbons from a production well that extends within the subterranean formation and is spaced apart from the stimulation well, wherein the producing includes producing during the increasing the pressure, the decreasing the pressure, and the repeating, and wherein the production well is spaced-apart from the stimulation well.