Net zero modelling has emerged as a critical capability for subsurface teams as the global energy industry accelerates toward lower-carbon operations. Governments, investors, and society increasingly expect energy companies to demonstrate credible pathways to reduce emissions while maintaining energy security. At the center of this challenge lies the subsurface.
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Carbon capture and storage (CCS), underground gas storage, hydrogen storage, and other energy transition initiatives all rely on accurate subsurface understanding. These projects involve long time horizons, strict regulatory oversight, and significant technical uncertainty. As a result, robust net zero modelling is no longer optional—it is essential.
tNavigator, developed by Rock Flow Dynamics, provides an integrated simulation platform that enables subsurface teams to apply proven reservoir engineering workflows to energy transition challenges. By leveraging existing expertise and extending it to new applications, tNavigator supports credible, data-driven net zero strategies.
Why the Energy Transition Depends on Subsurface Modelling
Energy transition discussions often focus on surface infrastructure, policy frameworks, and economics. However, many of the most impactful decarbonization solutions depend on what happens underground.
Subsurface as the Foundation of Net Zero Projects
Key net zero initiatives rely directly on subsurface performance:
- Carbon capture and storage (CCS)
- Underground gas storage
- Hydrogen storage
- CO₂-enhanced recovery and transitional projects
Each of these applications requires confidence in storage capacity, containment integrity, and long-term behavior.
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Long-Term Risk and Accountability
Unlike conventional field development, net zero projects must demonstrate safety and performance over decades—often far beyond the original project lifecycle. Net zero modelling provides the technical basis for:
- Regulatory approval
- Long-term liability assessment
- Stakeholder confidence
The Unique Challenges of Net Zero Modelling
While energy transition projects use familiar subsurface principles, they introduce new challenges that go beyond traditional hydrocarbon development.
Geological and Physical Uncertainty
Net zero modelling must account for:
- Limited historical data
- Uncertainty in storage capacity
- Complex fluid behavior (e.g., CO₂ phase changes)
- Pressure and geomechanical effects
These uncertainties must be explicitly quantified and managed.
Regulatory and Public Scrutiny
Energy transition projects face a higher level of scrutiny than conventional developments. Regulators require transparent, defensible models that clearly demonstrate containment and risk mitigation.
Net zero modelling must therefore be:
- Traceable
- Auditable
- Based on recognized engineering principles
Applying Reservoir Engineering Principles to Net Zero Modelling
One of the strengths of net zero modelling is that it builds on decades of reservoir engineering experience.
From Hydrocarbons to CO₂ and Hydrogen
Many subsurface processes relevant to net zero projects—such as multiphase flow, pressure propagation, and trapping mechanisms—are well understood in the context of hydrocarbon reservoirs.
tNavigator allows engineers to:
- Apply familiar simulation workflows
- Adapt physics to new fluids
- Maintain consistency with proven methodologies
Leveraging Existing Expertise
By using the same platform for both conventional and low-carbon projects, organizations reduce the learning curve and improve model credibility.
Supporting Carbon Capture and Storage (CCS) Projects
CCS is widely regarded as one of the most important technologies for achieving net zero targets, particularly for hard-to-abate industries.
Evaluating Storage Capacity and Injectivity
Net zero modelling using tNavigator supports:
- Estimation of CO₂ storage capacity
- Evaluation of injectivity and pressure buildup
- Assessment of well placement and injection strategies
These analyses are critical for determining project feasibility.
Containment and Risk Assessment
A key requirement of CCS projects is demonstrating long-term containment.
Modeling CO₂ Migration and Trapping
tNavigator enables simulation of:
- Structural and stratigraphic trapping
- Residual trapping
- Pressure evolution over time
This supports quantitative risk assessment and regulatory compliance.
Managing Uncertainty in Energy Transition Projects
Uncertainty management is central to net zero modelling.
From Deterministic to Probabilistic Evaluation
Single deterministic models are insufficient for net zero projects. Regulators and investors increasingly expect probabilistic assessments that show a range of possible outcomes.
Net zero modelling enables teams to:
- Explore multiple geological scenarios
- Quantify uncertainty ranges
- Assess downside and upside risk
Supporting Transparent Decision-Making
By explicitly addressing uncertainty, net zero modelling improves transparency and builds confidence among stakeholders.
Integrating Net Zero Modelling into Field Development Planning
Energy transition projects often coexist with conventional operations.
Integrated Planning for Transitional Assets
In some cases, depleted reservoirs or mature fields are repurposed for:
- CO₂ storage
- Gas storage
- Transitional energy projects
tNavigator supports integrated modelling that considers both legacy production data and future storage behavior.
Avoiding Siloed Technical Studies
Using a single integrated platform prevents net zero studies from becoming isolated exercises disconnected from broader asset management.
Supporting Long-Term Monitoring and Verification
Net zero projects do not end with initial injection.
Monitoring Over Decades
Subsurface models must support:
- Long-term pressure and plume prediction
- Monitoring strategy design
- Response planning for unexpected behavior
Net zero modelling provides the baseline against which monitoring data can be evaluated.
Updating Models as New Data Becomes Available
As monitoring data is acquired, models can be updated to refine forecasts and confirm containment performance.
Business and Strategic Value of Net Zero Modelling
Beyond technical requirements, net zero modelling delivers strategic value to organizations.
Reducing Project and Regulatory Risk
Robust modelling reduces the risk of:
- Project delays
- Regulatory rejection
- Long-term liability exposure
Strengthening Investment Confidence
Clear, defensible net zero modelling improves confidence among:
- Investors
- Partners
- Government stakeholders
This is essential for securing funding and approvals.
Industry Perspective on Net Zero and CCS Modelling
The importance of subsurface modelling in the energy transition is widely recognized.
Relevant references include:
- International Energy Agency (IEA) overview on carbon capture and storage
- Society of Petroleum Engineers (SPE) resources on energy transition and subsurface engineering
These sources highlight the central role of subsurface engineering in achieving net zero goals.
Why Net Zero Modelling Is Now a Core Subsurface Capability
As the energy industry evolves, subsurface teams are being asked to solve new problems using familiar skills. Net zero modelling allows organizations to apply proven reservoir engineering expertise to emerging energy challenges.
tNavigator enables teams to:
- Extend existing workflows to CCS and storage projects
- Manage uncertainty transparently
- Support long-term, defensible energy transition strategies
Conclusion
Net zero modelling is a cornerstone of credible energy transition strategies. By providing a robust, integrated simulation environment, tNavigator allows subsurface teams to address the technical, regulatory, and strategic challenges of low-carbon projects with confidence.
From CCS to underground storage, tNavigator supports data-driven decision-making that aligns technical rigor with sustainability goals.
Work with Kejora Gasbumi Mandiri
As the authorized representative of tNavigator in Indonesia, Kejora Gasbumi Mandiri supports energy companies with software implementation, net zero modelling workflows, technical consulting, and training.
If your organization is developing or evaluating energy transition projects and requires robust subsurface modelling to support net zero objectives, Kejora can help you unlock the full potential of tNavigator.
