Description
The POROPHASE Huff & Puff is an HP/HT laboratory system designed to reproduce cyclic injection processes in reservoir core samples under representative pressure and temperature conditions. The system combines PVT phase-behavior analysis with coreflood testing and reproduces the three main stages of the process: Huff, where CO₂, hydrocarbon gas, nitrogen, or hot pressurized water is injected into an oil- or condensate-saturated core; Soak, where the core is shut in to allow diffusion, gas dissolution, oil swelling, and fluid redistribution; and Puff, where pressure is released and the produced oil and gas are collected and quantified. Operating up to 10,000 psi (700 bar) and 150°C, the system provides independent control of pore and confining pressures and incorporates a sapphire-window visual coreholder for real-time observation of phase and multiphase-flow behavior. Pressure, temperature, injected volume, produced fluids, and recovery are continuously monitored, allowing multiple cycles to be compared and both cycle-by-cycle and cumulative recovery efficiency to be determined. POROPHASE is therefore particularly suited to the evaluation and optimization of EOR and CCUS processes.
Features
Confining pressure: up to 700 bar (10,000psi)
Pore pressure: up to 700 bar (10,000psi)
Temperature: Ambient to 150°C
Core diameter: 1’’1/2
Core length: 1’’ to 6’’
Loading type: Hydrostatic
Wetted material: Stainless steel
Fluids: CO₂, hydrocarbon gas, N₂ injection, Gas condensates, live oil and dead oil
Benefits
* Optimizes Gas EOR performance – Identifies the most effective injection, soaking, and production conditions to maximize hydrocarbon recovery.
* Quantifies incremental recovery – Measures recovery for each cycle and cumulative recovery over repeated Huff & Puff sequences.
* Reproduces realistic reservoir conditions – Tests cores up to 10,000 psi and 150°C with independent pore and confining pressure control.
* Provides direct visualization – The sapphire-window coreholder allows real-time observation of phase transitions, gas breakthrough, and fluid redistribution.
* Improves understanding of recovery mechanisms – Evaluates gas dissolution, swelling, saturation evolution, pressure response, and mobility changes to better understand why each cycle improves—or stops improving—recovery.
