Flagship Platform · Closed-Loop Geothermal

The Event Horizon Platform

A deep vertical superstructure that reaches 400 °C supercritical rock at roughly 20,000 ft and extracts its heat through a fully sealed, zero-friction closed loop. It is the proving ground for every Green Horizon material system — geopolymer, geoceramic, and corrosion engineering working as one.

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Event Horizon Platform deep vertical superstructure
The Concept

Tap magmatic heat. Touch nothing it can corrode.

Conventional deep wells fail where it matters most — the seal. The Event Horizon Platform replaces brittle cement with an anhydrous geopolymer annulus and geoceramic-clad casing engineered to bond permanently to the formation, then circulates heat-transfer fluid through a vacuum-insulated, zero-friction closed loop. Nothing the supercritical zone can attack is left unprotected.

  • Closed-loop system — no produced fluids, no formation drawdown
  • 8-mil geoceramic cladding for internal & external corrosion control
  • 4.5" anhydrous geopolymer annulus for hoop strength and insulation
  • Geopolymer fused to the formation — "the petrified bond"
Wellbore Architecture

Engineered from surface to target.

The superstructure is built in zones, each with the right barrier system for its depth, temperature, and load.

A

Surface infrastructure — the Event Horizon Platform

Master manifold and zero-friction pump array maintaining supercritical pressure, a binary-cycle primary heat exchanger optimized for flow, and an expansion / stabilization tank managing heat-transfer-fluid volume.

B

Upper superstructure — 0 to 12,000 ft

Vacuum-insulated tubing (VIT) on the hot-leg return path, protected by 8-mil geoceramic cladding for internal and external corrosion control.

C

Lower superstructure & heat hub — 12,000 to 20,000 ft

The 4.5" anhydrous geopolymer annulus delivers structural and hoop strength and insulates the formation, with a concentric flow path (cold leg down the outer annulus, hot leg up the inner VIT) and a zero-friction displacer shoe closing the monolithic bottom of the loop.

D

The target — 400 °C supercritical rock

At the rhyolitic magma chamber's heat anomaly, high-velocity supercritical heat extraction draws energy through the thermosiphon (self-circulating flow zone). The geopolymer is fused to the formation — a petrified bond that locks the system into the rock for the life of the well.

Casing Detail

Three barriers, one monolithic system.

BarrierSpecFunction
Steel substrateStructural casingPrimary load-bearing pipe body
Geoceramic coating8 mil minimum thicknessCorrosion and chemical-attack protection, internal & external
Geopolymer annulus4.5" anhydrousHoop strength, formation insulation, permanent bond
Design Targets

Built for the deepest, hottest energy resource on Earth.

400 °C
Supercritical target temperature
~20k ft
Target depth to magmatic anomaly
8 mil
Geoceramic corrosion cladding
Zero
Produced fluids — fully closed loop
Event Horizon geopolymer and geoceramic systems
The Material Stack

Every Green Horizon system, working as one.

The Event Horizon Platform is where our material platforms converge. Explore the technologies that make it possible:

Event Horizon also underpins our federal quantum-geophysical exploration work. See the Event Horizon Platform on our Federal & Quantum site ↗

Engineer a well that lasts for the life of the resource.

Request the Event Horizon Platform technical package or talk to our downhole engineering team about your program.

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