A method of producing hydrocarbons from an underground formation having an array of horizontal wells has the steps of: inserting one or more heater strings into at least one heater well section, the heater string comprising a heating element and a flow passage for transporting fluid from a fluid input to at least one injection port; activating the heating element of the heater string to heat the formation sufficient to produce hydrocarbons from the formation immediately adjacent to the at least one heater well section; heating and injecting a solvent into the at least one heater well in the gaseous phase through the at least one injection port of the heater string such that the solvent is injected into the voidage in the at least one heater well section created by the produced hydrocarbons; and producing hydrocarbons from at least one producer well.

Methods for producing hydrocarbons from subterranean reservoirs are disclosed herein. The methods utilize a production well that comprises a plurality of fluid-inlet components are spaced apart to define a plurality of production-well fluid-inlet zones. The methods comprise injecting an injection fluid comprising a solvent into the reservoir, such that a drainage fluid comprising a liquid phase and a gas phase occupies one or more of the production-well fluid-inflow zones. The method further comprises producing a production fluid at a production-flow rate via a pump, and modulating the gas phase:liquid phase ratio of the production fluid by orchestrating variations in the pump speed and one or more of the plurality of fluid-inlet components to prioritize hydraulic communication with a subset of the plurality of production-well fluid-inlet zones.

Disclosed are methods of producing hydrocarbons and recovering solvent from a subterranean reservoir that is penetrated by an injection well and a production well. The methods comprise orchestrating a production phase that involves injecting solvent (and optionally steam) to mobilize viscous hydrocarbons. The methods also comprise a solvent-recovery phase that involves non-condensable gas injection. The production phase and the solvent-recovery phase are each defined by an injection profile. The solvent-recovery-phase injection profile is selected: (i) based on the production-phase injection profile, and (ii) to ensure the pressure/temperature conditions in proximity to the production well favour gas-phase solvent recovery.

Disclosed are methods of producing hydrocarbons and recovering solvent from a subterranean reservoir that is penetrated by an injection well and a production well. The methods comprise orchestrating a production phase that involves injecting solvent (and optionally steam) to mobilize viscous hydrocarbons. The methods also comprise a solvent-recovery phase that involves non-condensable gas injection. The production phase and the solvent-recovery phase are each defined by an injection profile. The solvent-recovery-phase injection profile is selected: (i) based on the production-phase injection profile, and (ii) to ensure the pressure/temperature conditions in proximity to the production well favour gas-phase solvent recovery.

Processes are provided for conformance control in the production of hydrocarbons from reservoirs, involving the distribution of mobilizing injection fluids into a formation through a number of injection fluid distribution points spaced apart along an injection well. The volume and/or position of mobilizing fluid outflows at the distribution points is adjusted based on criteria that include selected reservoir parameters measured at spatially distributed measurement points in the reservoir. An operational system is provided so that these measurements provide a proxy for recovery chamber conformance.

Processes are provided for conformance control in the production of hydrocarbons from reservoirs, involving the distribution of mobilizing injection fluids into a formation through a number of injection fluid distribution points spaced apart along an injection well. The volume and/or position of mobilizing fluid outflows at the distribution points is adjusted based on criteria that include selected reservoir parameters measured at spatially distributed measurement points in the reservoir. An operational system is provided so that these measurements provide a proxy for recovery chamber conformance.

Methods including generating heat and/or gas in subterranean operations, pipelines, and other related applications. In some embodiments, the methods include providing treatment composition including a carrier fluid, a catalyst, a first reactant, a second reactant, a solvent, an emulsifier, and a foaming agent, wherein the first and second reactants are capable of reacting in an exothermic chemical reaction; and introducing the treatment composition into at least a portion of a conduit or container having a temperature of less than 30° C.

Methods including generating heat and/or gas in subterranean operations, pipelines, and other related applications. In some embodiments, the methods include providing treatment composition including a carrier fluid, a catalyst, a first reactant, a second reactant, a solvent, an emulsifier, and a foaming agent, wherein the first and second reactants are capable of reacting in an exothermic chemical reaction; and introducing the treatment composition into at least a portion of a conduit or container having a temperature of less than 30° C.

Processes and configurations for subterranean resource extraction are provided. The processes include installing borehole strings, such as by drilling a plurality of boreholes, for example, first and second boreholes, that extend from a surface region into a resource deposit. The first and second boreholes are situated adjacent to each other. Portions of the first and second boreholes laterally extend in a penannularly fashion and connect terminally at a nodal space situated within the resource deposit. Carrier fluid is injected from the surface along fluid paths defined by the boreholes to in situ leach resource materials from the resource deposit into the carrier fluid, and carrier fluid containing the resource materials is brought back to surface for resource extraction.

Processes and configurations for subterranean resource extraction are provided. The processes include installing borehole strings, such as by drilling a plurality of boreholes, for example, first and second boreholes, that extend from a surface region into a resource deposit. The first and second boreholes are situated adjacent to each other. Portions of the first and second boreholes laterally extend in a penannularly fashion and connect terminally at a nodal space situated within the resource deposit. Carrier fluid is injected from the surface along fluid paths defined by the boreholes to in situ leach resource materials from the resource deposit into the carrier fluid, and carrier fluid containing the resource materials is brought back to surface for resource extraction.