Geothermal Energy Patents

Geothermal energy patents cover enhanced geothermal systems EGS hydraulic stimulation and monitoring technology; closed-loop geothermal CLGS heat exchanger design; supercritical geothermal energy extraction; deep hard rock drilling technology; organic Rankine cycle ORC power conversion; and direct-use heat applications — with IP held by a mix of specialized geothermal companies, oilfield services firms, and power equipment manufacturers: MAJOR GEOTHERMAL ENERGY PATENT HOLDERS: FERVO ENERGY: 50+; specific horizontal EGS (specific specific horizontal well pair EGS: specific specific directional drilled horizontal producer+injector well pair for specific specific engineered reservoir at specific specific 3-4 km depth in specific specific hot dry rock granite formation from specific specific hydraulic fracture network connecting well pair for specific specific closed forced-flow geothermal circulation; specific specific fiber optic DAS distributed acoustic sensing: specific specific permanent fiber optic cable cemented in specific specific wellbore from specific specific continuous acoustic monitoring for specific specific hydraulic fracture network mapping + specific specific flow profiling + specific specific thermal front tracking + specific specific real-time reservoir characterization during EGS operations at specific specific Cape Station Utah 400 MW target + specific specific FORGE DOE Utah demonstration); ALTAROCK ENERGY: 50+; specific EGS stimulation (specific specific engineered geothermal system EGS: specific specific multiple zone stimulation from specific specific diverter material chemistry in specific specific wellbore for specific specific sequential fracture network isolation + specific specific reinjection into specific specific different formation zone for specific specific multi-fracture reservoir from specific specific >3 km depth hard rock at specific specific DOE FORGE Milford Utah test site + specific specific Newberry Volcano Oregon CarbFix-2 CO2 sequestration demonstration); ORMAT TECHNOLOGIES: 500+; specific binary ORC geothermal (specific specific Ormat Energy Converter OEC modular binary: specific specific organic Rankine cycle ORC module from specific specific n-pentane working fluid for specific specific 150-170°C moderate-enthalpy brine from specific specific air-cooled condenser for specific specific 55 MW modular scalable + specific specific EATB ammonia working fluid for specific specific <150°C low-temperature resource for specific specific 20 MW module at specific specific Brawley + specific specific Nevada + specific specific Kenya Olkaria 150 MW); QUAISE ENERGY: 20+; specific millimeter-wave drilling (specific specific mm-wave gyrotron rock vaporization: specific specific 1 MW 95 GHz gyrotron microwave beam for specific specific focused borehole rock vaporization + specific specific plasma drilling for specific specific superhot geothermal >400°C at specific specific 10-20 km depth beyond specific specific conventional PDC bit limit at specific specific 3-5 km for specific specific GW-scale superhot geothermal); SLB (SCHLUMBERGER); BAKER HUGHES; HALLIBURTON: 50,000+ combined oilfield services including geothermal; CLIMEON (CLIMEON AB): 100+; specific low-temperature ORC; DANDELION ENERGY: 30+; specific residential ground source heat pump; EAVOR TECHNOLOGIES: 50+; specific closed-loop CLGS multilateral.

EGS hydraulic stimulation reservoir engineering for hard rock; closed-loop geothermal CLGS multilateral well heat exchanger configurations; and supercritical geothermal fluid extraction represent three technically differentiated geothermal innovation domains: EGS HYDRAULIC STIMULATION PATENTS: FERVO; ALTAROCK; DOE NATIONAL LABORATORIES; BAKER HUGHES; SLB: specific EGS stimulation (specific specific oriented hydraulic fracturing: specific specific perforation cluster design from specific specific phased perforations oriented toward specific specific maximum horizontal stress SHmax for specific specific created fracture azimuth control + specific specific fracture complexity index FCI in specific specific hard basement granite/gneiss from specific specific distributed fiber optic sensing DAS microseismic monitoring; specific specific diverter+sealant material: specific specific degradable fiber/particle diverter from specific specific polyglycolic acid PGA 100-120°C degradable + specific specific cross-linked polymer for specific specific wellbore zone isolation + specific specific ball drop sleeve for specific specific multi-stage fracturing for specific specific EGS multi-zone stimulation without specific specific mechanical plug intervention cost; specific specific EGS well pair productivity: specific specific impedance <0.1 MPa·s/L from specific specific connected fracture network for specific specific 100+ L/s flow at specific specific <50°C temperature drawdown for specific specific productive EGS commercial power; specific specific thermal breakthrough time: specific specific channeling model from specific specific fracture aperture distribution + specific specific matrix heat exchange area for specific specific thermal lifetime prediction >30 year); CLOSED-LOOP GEOTHERMAL CLGS PATENTS: EAVOR TECHNOLOGIES; CLIMEON; SANS FRONTIER: specific CLGS heat exchanger (specific specific multilateral closed-loop: specific specific surface-to-surface U-loop from specific specific vertical starter + specific specific two deep horizontal laterals at specific specific 4-5 km depth for specific specific conduction-only heat exchange with specific specific rock no fluid exchange no stimulation no produced brine from specific specific working fluid pressurized closed-loop circulation for specific specific scalable modular system without specific specific EGS stimulation risk + specific specific no produced brine chemistry scaling fouling risk at specific specific Eavor-Lite Alberta Canada 2.4 km pilot; specific specific thermosiphon: specific specific gravity-driven circulation without specific specific pump from specific specific thermal head from specific specific working fluid density difference for specific specific 24/7 baseload at specific specific low pumping parasitic load <5% gross power; specific specific rock conduction heat extraction: specific specific maximum lateral length optimization from specific specific thermal depletion radius vs. specific specific lateral spacing + specific specific reservoir thermal conductivity k W/m·K + specific specific specific heat capacity ρCp J/m³·K for specific specific 30-year thermal lifetime from specific specific shale 1.5 vs. specific specific granite 3.0 W/m·K thermal conductivity); SUPERCRITICAL GEOTHERMAL PATENTS: ICELAND DEEP DRILLING PROJECT IDDP; REYKJAVIK ENERGY; ALTERRA ENERGY (ICELAND): specific supercritical (specific specific supercritical geothermal: specific specific T>374°C P>22 MPa supercritical water for specific specific 10× enthalpy vs. specific specific conventional hydrothermal flash steam from specific specific 2-4 km depth volcanic caldera for specific specific 50 MW single-well output vs. specific specific 5 MW conventional at specific specific IDDP-2 Reykjanes Iceland 427°C 34 MPa drill 4.6 km; specific specific superhot rock: specific specific T>400°C at specific specific 10+ km depth from specific specific quartz grain boundary microcracking for specific specific fluid access from specific specific CO2 or specific specific brine injection + specific specific production at specific specific supercritical condition from specific specific Quaise mm-wave drilling enabling access).

Geothermal-specific drilling technology to access deep hard rock; advanced wellbore design for high-temperature high-pressure HTHP geothermal environments; and organic Rankine cycle ORC and flash steam power conversion patents represent the core technology stack for converting geothermal heat to power: GEOTHERMAL DRILLING PATENTS: SLB; BAKER HUGHES; HALLIBURTON; QUAISE ENERGY; HYPERDRILL: specific geothermal drilling (specific specific PDC polycrystalline diamond compact bit for hard rock: specific specific PDC cutter geometry from specific specific high backrake angle 20-25° + specific specific chamfer edge for specific specific abrasion-resistant granite+quartzite drilling for specific specific ROP rate of penetration 3-10 m/hr at specific specific 200°C+ bottom hole temperature from specific specific thermally stable PDC TSD 400°C vs. specific specific conventional PDC 350°C limit; specific specific tri-cone rotary: specific specific Tungsten carbide insert TCI sealed-roller bearing for specific specific hard rock geothermal >200°C fluid temperature + specific specific 30,000+ psi formation pressure at specific specific >4 km depth; specific specific directional drilling MWD: specific specific RSS rotary steerable system from specific specific push-the-bit or specific specific point-the-bit for specific specific <0.1° DLS dogleg severity limit/100ft for specific specific smooth horizontal lateral trajectory + specific specific MWD measurement while drilling gamma+resistivity+density at specific specific high temperature 175°C+ electronics for specific specific EGS horizontal well placement accuracy; specific specific Quaise mm-wave rock ablation: specific specific 95 GHz gyrotron 1 MW from specific specific focused waveguide for specific specific rock vaporization + specific specific plasma channel for specific specific >3× PDC ROP in specific specific granite at specific specific ultradeep 10-20 km for specific specific superhot geothermal); WELLBORE DESIGN PATENTS: BAKER HUGHES; SLB; WELLTEC; EXPRO: specific geothermal wellbore (specific specific high-temperature casing cement: specific specific CAL-SIL calcium silicate cement from specific specific 300-400°C stable vs. specific specific OPC Portland 250°C limit for specific specific geothermal well cement sheath integrity + specific specific HTHP wellbore integrity 30,000 psi; specific specific expandable casing: specific specific rotary-expanded from specific specific solid expandable for specific specific slimhole geothermal + specific specific monobore well for specific specific reduced casing cost; specific specific downhole heat exchanger DHE: specific specific coiled-tubing DHE for specific specific low-flow direct-use from specific specific closed-loop in-well for specific specific no brine produced); ORC AND POWER CYCLE PATENTS: ORMAT; CLIMEON; TURBODEN; EXERGY; ZEOPEG/RAMEA: specific ORC (specific specific binary cycle ORC: specific specific pentane/isobutane working fluid heat exchanger for specific specific 90-170°C brine from specific specific secondary loop + specific specific air-cooled condenser for specific specific <150°C low-enthalpy resource + specific specific 0 water consumption for specific specific arid site from specific specific 20-55 MW modular ORC at specific specific >85°C brine for specific specific minimum economic temperature threshold; specific specific double-flash: specific specific 200-300°C high-enthalpy resource two-stage flash for specific specific HP flash separator 5-10 bar + specific specific LP flash 1-2 bar for specific specific maximum steam quality+mass fraction + specific specific condenser non-condensable gas NCG removal scrubbing H2S; specific specific combined flash+binary: specific specific flash steam turbine from specific specific high-temperature portion + specific specific binary ORC from specific specific low-temperature brine residual for specific specific maximum resource recovery >60% vs. specific specific single-flash 30%).

Geothermal energy startup IP strategy must account for the large existing oilfield services IP estate held by SLB Baker Hughes and Halliburton; the emerging EGS and closed-loop CLGS patent space with fewer large incumbents; the importance of measured performance data to distinguish from prior art; and the regulatory and permitting moat that can complement patent protection: GEOTHERMAL STARTUP IP STRATEGY: UNDERSTAND THE GEOTHERMAL IP LANDSCAPE: ORMAT DOMINATES CONVENTIONAL: Ormat (500+) holds dominant IP in binary ORC geothermal power conversion — binary ORC for <170°C geothermal is highly covered; differentiation requires novel working fluid selection; novel heat exchanger design; or novel resource type (ultralow-T <90°C, coproduced oilfield water); OILFIELD SERVICES CONTROL DRILLING: SLB+Baker Hughes+Halliburton hold 50,000+ combined patents in drilling technology, completion, and stimulation that directly apply to geothermal — most geothermal drilling technology is adapted from oilfield and covered; EGS EMERGING IP SPACE: EGS and particularly horizontal EGS is a newer IP space with Fervo (50+) leading in commercial horizontal EGS — fewer large incumbent blocking patents than conventional hydrothermal; CLOSED-LOOP EAVOR CLGS: Eavor Technologies (50+) has built a focused CLGS multilateral U-loop portfolio — most relevant FTO for any closed-loop geothermal startup; QUAISE DEEP/SUPERHOT FRONTIER: Quaise (20+) represents the newest IP frontier in mm-wave drilling for superhot ultra-deep geothermal — very early stage IP landscape with significant whitespace; WHEN TO PATENT IN GEOTHERMAL: NOVEL EGS STIMULATION METHOD WITH MEASURED RESERVOIR PERFORMANCE: specific novel stimulation approach (specific specific diverter material chemistry + specific specific injection schedule + specific specific perforation design) with specific measured reservoir impedance MPa·s/L + specific specific flow rate L/s + specific specific temperature breakthrough time days + specific specific connected fracture volume m³ at specific specific field scale vs. specific specific AltaRock diverter or specific specific Fervo fiber-optic monitored EGS stimulation baseline — field-scale production data is a critical differentiator from prior art laboratory or simulation-only claims; NOVEL CLGS HEAT EXCHANGER DESIGN WITH MEASURED THERMAL OUTPUT: specific novel CLGS configuration (specific specific lateral spacing + specific specific lateral length + specific specific working fluid selection + specific specific depth interval) with specific measured thermal production MWt per km lateral + specific specific thermal drawdown rate °C/year + specific specific pumping parasitic % gross power + specific specific LCOE $/kWh at specific specific project conditions vs. specific specific Eavor U-loop baseline; NOVEL DRILLING TECHNOLOGY WITH MEASURED ROP AND COST: specific novel bit design (specific specific cutter geometry + specific specific material + specific specific hydraulics) with specific measured ROP m/hr in specific specific rock type (granite+quartzite+basalt) at specific specific temperature °C + specific specific depth m + specific specific cost per meter $/m vs. specific specific PDC or specific specific tri-cone baseline in same rock type; NOVEL ORC WORKING FLUID OR CYCLE WITH MEASURED EFFICIENCY: specific novel binary ORC configuration (specific specific working fluid selection + specific specific cycle topology + specific specific heat exchanger design) with specific measured net cycle efficiency % at specific specific brine inlet temperature °C + specific specific ambient °C + specific specific net power kW vs. specific specific Ormat OEC baseline in same resource conditions; PERMITTING AS COMPLEMENTARY MOAT: Geothermal resource rights (lease from Bureau of Land Management BLM on federal land or state equivalent), resource characterization data, and EIS environmental impact statements constitute a non-IP competitive moat that can be as powerful as patent protection in project development — protect proprietary resource data and stimulation well test data as trade secrets; SECTION 101: Geothermal hardware (bit design, wellbore configuration, heat exchanger, ORC turbine) = fully patent-eligible; geothermal reservoir simulation algorithm alone = potential Alice risk; anchor reservoir model claims to specific sensor measurement input + specific wellbore actuation output; DOE SBIR/STTR: government rights under Bayh-Dole for DOE-funded EGS projects — check FORGE program IP terms before filing; KEY FTO CHECKLIST: Fervo Energy horizontal EGS fiber optic DAS monitoring commercial production; AltaRock EGS multi-zone diverter stimulation FORGE Utah+Newberry Oregon; Eavor CLGS multilateral U-loop closed-loop multilateral thermosiphon; Ormat OEC binary ORC pentane 20-55 MW modular air-cooled; Quaise gyrotron 95 GHz 1 MW mm-wave rock ablation; SLB/Baker Hughes PDC TSD hard rock drilling MWD RSS directional; IDDP supercritical >374°C >22 MPa volcanic caldera.