A system comprises an injection well for accessing reservoir at a first temperature; a production well in fluid communication with the reservoir; a working-fluid supply system providing a non-water based working fluid to the injection well at a second temperature lower than the first temperature, wherein exposure of the working fluid to the first temperature heats the working fluid to a third temperature and at least a portion of the working fluid at the third temperature is produced as a production fluid; and an energy recovery system that converts energy contained in the production fluid to electricity or heat, wherein the energy recovery system includes a waste heat recovery apparatus that recovers waste heat and uses it to heat the production fluid to a fourth temperature that is higher than the third temperature, wherein the waste heat is recovered from equipment of or a process stream.

A controlled rate of propagation of the fluid saturation front or thermal front is desired in may oil and gas and geothermal operations. Natural fractures and fractures created during hydraulic stimulation may have heterogeneous hydraulic properties resulting in uneven flow distributions, therefore leading to short-circuiting and breakthrough issues. The present invention relates to wellbores connected hydraulically by multiple fracture zones; methods are directed to control for even flow distribution among fractures, regardless of heterogeneities in fracture hydraulic properties, and to control propagation of saturation fronts and thermal fronts in subsurface reservoirs.

A geothermal plant, for extracting energy from a geothermal reservoir located below the ocean bottom, includes a floating platform; a riser that extends from a well drilled into the geothermal reservoir, to the floating platform; an electrical pump having a mechanical actuation part located in a bore of the riser, and an electronic part located outside the riser, wherein the electrical pump is configured to pump a geothermal liquid from the geothermal reservoir to the floating platform; and a power plant located on the floating platform and configured to use a steam produced by the geothermal liquid to generate electrical power. The electrical pump is placed at a depth of the riser where the geothermal liquid is in a single-phase.

Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for using a thin-bed hot sedimentary aquifer (HSA) in geothermal energy generation applications. An example embodiment operates by pumping, via an extraction well, heated water from an extraction depth of an HSA. The HSA is identified based on a permeability satisfying a threshold permeability range and could even have a thickness equal to or less than about 100 meters. The example embodiment further operates by extracting, via a power generation unit, heat from the heated water to generate power and transform the heated water into cooled water. Subsequently, the example embodiment operates by injecting, via an injection well, the cooled water at an injection depth of the HSA. A first portion of the extraction well and a second portion of the injection well are disposed within the HSA.

A system and method of harvesting geothermal energy in a subterranean formation includes providing an injection wellbore that extends into the subterranean formation, positioning a plurality of selectively opening sleeves in the injection wellbore spaced apart the subterranean formation, providing at least one producing wellbore that extends into the subterranean formation in a predetermined location proximate to the injection wellbore, and fracturing the subterranean formation in a plurality of locations proximate to the plurality of selectively opening sleeves to enhance a fluid pathway between the injection wellbore and the at least one producing wellbore. Fluid is injected down the injection wellbore at a first temperature, and the fluid is produced from the at least one producing wellbore at a second temperature higher than said first temperature.

A method for producing electricity from an existing oil platform designed to extract petroleum oil from an underground deposit comprises the following steps: extracting a mixture of petroleum oil and water from the underground deposit under a pressure P2 via a first extraction pipe (11); circulating the extracted mixture so as to actuate an electricity generating turbine by kinetic energy in order to generate electricity; and supplying a power grid with at least a fraction of the electricity generated by the generating turbine.

A controlled rate of propagation of the fluid saturation front or thermal front is desired in may oil and gas and geothermal operations. Natural fractures and fractures created during hydraulic stimulation may have heterogeneous hydraulic properties resulting in uneven flow distributions, therefore leading to short-circuiting and breakthrough issues. The present invention relates to wellbores connected hydraulically by multiple fracture zones; methods are directed to control for even flow distribution among fractures, regardless of heterogeneities in fracture hydraulic properties, and to control propagation of saturation fronts and thermal fronts in subsurface reservoirs.

A method for extracting a fuel from a geologic formation comprises heating a target volume in the geologic formation to generate the fuel via thermal conversion of a precursor material, thereby also heating a part of the geologic formation, extracting the generated fuel from the geologic formation; recovering heat from the geologic formation; and using the recovered heat for one or more of: heating the target volume, heating a different target volume, extracting the fuel, recovering the heat from the geologic formation, processing the extracted fuel, and converting the recovered heat into another form of storable energy.

A geopressure and geothermal power system includes at least one pressure exchanger configured to receive a production fluid and a working fluid. At least one power generation unit is fluidly coupled to the pressure exchanger. At least one production well is positioned at least partially within a geothermal reservoir and provides the production fluid to the pressure exchanger. The system may also include at least one heat exchanger fluidly coupled to the at least one pressure exchanger and configured to one of, a) receive from and b) provide to, the at least one pressure exchanger the production fluid and the working fluid.

A system comprises an injection well in communication with an underground reservoir that is at a first temperature and that contains a native fluid, a production well in communication with the reservoir, and a supply system providing a non-water based working fluid to the injection well at a second temperature lower than the first temperature. Exposure of the working fluid to the first temperatures heats the working fluid to a third temperature that is higher than the second temperature. At least a portion of the working fluid at the third temperature enters the production well and is produced from the reservoir as a production fluid. An energy recovery apparatus in fluid communication with the production well converts energy contained in the production fluid to electricity, heat, or a combinations thereof.