Hariharan Ramachandran

Estimating CO2 Leakage Fluxes along Legacy Wells Using a Rapid Physics-Based Screening Approach

Hariharan Ramachandran, Iain de Jonge‐Anderson, Benjamin Pullen, Aaron Cahill

Achieving net-zero targets demands the rapid expansion of CO2 geological storage, but legacy wells in mature petroleum provinces represent a significant containment risk when engineered barriers degrade. At the early assessment stage, storage projects need to rapidly bound plausible leakage magnitudes across …

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Fourier Neural Operator Surrogates for Hysteretic Multiphase Flow in Heterogeneous Geological CO2 Storage Reservoirs

B. Venkateshwaran, Haque A. K. M. Eahsanul, Siddiqui. Numair Ahmed, Hariharan Ramachandran et autres

Modeling hysteresis in heterogeneous field-scale reservoirs is essential for estimating residual CO2 trapping capacity and assessing the security of geological storage. This requires accounting for both relative permeability hysteresis and capillary pressure hysteresis, which control path-dependent multiphase flow and the spatial distribution …

Rapid Fault Leakage Screening for CO₂ Storage Under Uncertainty: Application to a Faulted Miocene Aquifer in the Malay Basin

Hariharan Ramachandran, Iain de Jonge‐Anderson, Ana Widyanita, Uisdean Nicholson et autres

Geological CO2 storage is critical for mitigating climate change, yet the risk of leakage along faults poses significant challenges. Faults function as structural traps or preferential CO2 migration pathways depending on their sealing capacity. This study applies a computationally efficient rapid fault …

A Vertical Equilibrium Model for CO2 Migration in Depleted Gas Fields

Saeid Telvari, Hariharan Ramachandran, Gang Wang, Florian Doster

This study extends the vertical equilibrium (VE) modeling framework to simulate multi-phase flow involving CO₂, methane, and brine in depleted gas reservoirs. Methane presence introduces complexity not captured in traditional VE models. The proposed model integrates a black-oil approximation with VE assumptions, …

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A Vertical Equilibrium Model for CO2 Migration in Depleted Gas Fields

Saeid Telvari, Hariharan Ramachandran, Gang Wang, Florian Doster

This study extends the vertical equilibrium (VE) modeling framework to simulate multi-phase flow involving CO₂, methane, and brine in depleted gas reservoirs. Methane presence introduces complexity not captured in traditional VE models. The proposed model integrates a black-oil approximation with VE assumptions, …

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Rapid Fault Leakage Modelling for CO 2 Storage in Saline Aquifers

Hariharan Ramachandran, Iain de Jonge‐Anderson, Ikhwanul Hafizi Musa, Uisdean Nicholson et autres

Abstract Simulating the fluid flow along fault zones at different scales is essential for predicting the CO 2 leakage and containment during injection and storage. However, this can be challenging, especially in the early stages of a storage project when knowledge of …

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A Vertical Equilibrium Model for CO2 Migration in Depleted Gas Fields

Saeed Telvari, Hariharan Ramachandran, Gang Wang, Florian Doster

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Fourier Neural Operator Surrogates for Hysteretic Multiphase Flow in Heterogeneous Geological CO2 Storage Reservoirs

Venkateshwaran Baskaran, AKM Eahsanul Haque, Numair Siddiqui, Hariharan Ramachandran et autres

Modeling hysteresis in heterogeneous field-scale reservoirs is essential for estimating residual CO2 trapping capacity and assessing the security of geological storage. This requires accounting for both relative permeability hysteresis and capillary pressure hysteresis, which control path-dependent multiphase flow and the spatial distribution …

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Regional screening of saline aquifers in the Malay Basin for CO2 storage

Iain de Jonge‐Anderson, Hariharan Ramachandran, Ana Widyanita, Andreas Busch et autres

• Identifies best areas of Malay Basin for saline aquifer CO 2 storage. • Pliocene aquifers too shallow, upper Miocene aquifers optimal in centre of basin. • Lower and middle Miocene aquifers optimal at basin margins. • Mostly low net-to-gross formations favouring …

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Rapid Field-Scale CO2 Storage Simulation Tool with Geomechanically Constrained Fault Leakage

Hariharan Ramachandran, Ikhwanul Hafizi Musa, Chee Phuat Tan, S. Geiger et autres

ABSTRACT: Geological carbon dioxide (CO2) storage is vital for climate change mitigation, but CO2 leakage, particularly through faults, poses significant risks. Accurately simulating the impact of fault properties across scales is crucial for predicting field-scale CO2 injection and storage outcomes. However, this …

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Regional screening of saline aquifers in the Malay Basin for CO2 storage

Iain de Jonge‐Anderson, Hariharan Ramachandran, Ana Widyanita, Andreas Busch et autres

The Malay Basin has received significant attention for geological carbon dioxide storage (GCS), but there are no published studies addressing the selection of appropriate deep saline aquifers. This study closes this gap. We process spatial data and use geological modelling and cluster …

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Rapid Fault Leakage Modeling for CO2 Storage in Saline Aquifers

Hariharan Ramachandran, Iain de Jonge‐Anderson, Ikhwanul Hafizi Musa, Uisdean Nicholson et autres

Simulating the fluid flow along fault zones at different scales is essential for predicting the CO2 leakage and containment during injection and storage. However, this can be challenging, especially in the early stages of a storage project when knowledge of the reservoir …

gb, my, nl (code pays fourni par la source)