Well Decommissioning

Well Decommissioning Services Built on 40+ Years of Global Experience

When a well reaches the end of its productive life, the work that follows matters just as much as the work that brought it online. Well decommissioning demands precision, regulatory knowledge, and a commitment to environmental responsibility that leaves nothing to chance.

At Frontier Energies, we have built our reputation on doing exactly that. With offices in Calgary, Singapore, Perth and Brisbane, we bring almost 50 years of operational experience and more than 3,500 successful plug and abandonment operations since 2017 to every project we take on. Whether you are an independent operator without a dedicated decommissioning team or a major producer needing additional resources for a campaign, we deliver safe, efficient, and fully compliant well abandonment solutions.

What Is Well Decommissioning?

Well decommissioning is the permanent closure of oil and gas wells that are no longer producing or that have reached the end of their operational lifecycle. The process, commonly referred to as plug and abandonment (P&A), involves isolating subsurface formations, removing or securing wellbore equipment, and restoring the surface site to meet regulatory and environmental standards.

The goal is straightforward: prevent any future migration of hydrocarbons or formation fluids to the surface or into freshwater zones. Proper well decommissioning protects groundwater, eliminates long-term liability, and ensures operators meet their regulatory obligations.

Why Proper Well Abandonment Matters

Poorly executed well abandonment creates risks that extend far beyond the wellsite. Leaking wells can contaminate aquifers, release greenhouse gases, and expose operators to significant regulatory penalties and remediation costs. In jurisdictions worldwide, regulators are tightening requirements around inactive and orphaned wells, making timely and thorough decommissioning more important than ever.

Frontier Energies treats every well decommissioning project with the same rigour, whether it involves a single well or a multi-well campaign spanning hundreds of sites. Our proprietary processes and integration of historical well data into digital workflows allow us to plan and execute each operation with a level of precision that reduces risk and controls cost.

Our Process

Our Well Decommissioning Process

We follow a structured approach to every plug and abandonment project. Each phase is designed to maximize safety, maintain regulatory compliance, and deliver cost-effective results.

Step 01.

Data Review and Planning

Every successful well decommissioning project begins with thorough preparation. We gather and analyze all available well records, including drilling reports, completion data, cement bond logs, and historical intervention records. Our team integrates this data into digital workflows that allow us to identify potential challenges before mobilizing to the field. This data-driven planning phase reduces surprises and keeps projects on schedule.

Step 02.

Regulatory Compliance and Permitting

Decommissioning requirements vary by jurisdiction, and getting the paperwork right is non-negotiable. Our teams in Calgary, Singapore, Perth and Brisbane maintain working knowledge of the regulatory frameworks in every region where we operate. We prepare and submit all required applications, notifications, and abandonment programs on behalf of our clients, ensuring full compliance from the start.

Step 03.

Downhole Plug and Abandonment

This is the core of the well decommissioning process. We set cement plugs and mechanical barriers at designated intervals to permanently isolate all open formations. Our crews verify barrier integrity through pressure testing and tagging procedures before moving to the next plug. We select materials and methods based on the specific well conditions identified during the planning phase, drawing on our experience across more than 4,000 P&A operations to address even the most complex wellbore configurations.

Step 04.

Wellhead Removal and Surface Restoration

Once the downhole barriers are verified, we cut and pull the casing below the surface, remove the wellhead, and cap the well. Surface equipment is removed, and the site is restored in accordance with local environmental and landowner requirements. For onshore wells, this typically includes re-contouring the site and re-establishing vegetation. For offshore installations, additional steps such as conductor removal and seabed clearance may apply.

Step 05.

Documentation and Regulatory Closeout

We compile a full abandonment report for every well, including all barrier verification records, material certificates, and as-built diagrams. These reports are submitted to the relevant regulatory authority and provided to our clients for their records. Clean documentation protects operators from future liability and demonstrates due diligence.

Why Frontier

Why Choose Frontier Energies for Well Decommissioning

3,500+ Wells Plugged and Abandoned Since 2017

Numbers tell a story. Since 2017, we have successfully completed plug and abandonment operations on more than 3,500 wells across multiple regions and regulatory jurisdictions. That volume of work has given us a depth of operational knowledge that translates directly into safer, faster, and more predictable project outcomes for our clients.

Proprietary Processes and Digital Workflows

We do not rely on generic procedures. Our proprietary well decommissioning processes have been refined over three decades of field operations. We integrate historical well data into digital planning tools that give our engineers a clear picture of each wellbore before a single truck rolls to location. This approach reduces non-productive time and helps us identify the most efficient abandonment strategy for each well.

Flexible Resourcing for Any Operator

Frontier Energies works with operators of all sizes. If you are an independent producer without a dedicated decommissioning team, we provide full project management and execution from planning through regulatory closeout. If you are a major operator running a large-scale abandonment campaign and need additional crews, supervisors, or engineering support, we integrate with your existing teams and systems to deliver the extra capacity you need without the overhead of permanent hires.

Global Reach with Local Knowledge

Our offices in Calgary, Singapore, Perth and Brisbane give us a physical presence across four continents. But presence alone is not enough. Our regional teams bring hands-on experience with local regulations, supply chains, and operating conditions. This local knowledge, backed by our global operational standards, means you get consistent quality regardless of where your wells are located.

Safety as a Standard

Safely managing wells today for a safer and cleaner tomorrow is not just our mission statement. It is how we operate every day. Our safety record reflects a culture where every team member is empowered to stop work if conditions change. We track leading and lagging safety indicators across all projects and use that data to continuously improve our procedures.

Who We Work With

Our well decommissioning services are designed for two distinct client profiles:

Independent operators and smaller producers who do not maintain in-house decommissioning teams. We handle everything from initial well data review through final regulatory submission, giving you a single point of accountability for the entire project.

Major operators and large independents who need to augment their existing resources for campaign-scale abandonment programs. We supply experienced crews, supervisors, and engineers who integrate with your workflows, safety systems, and reporting requirements.

This dual focus means we understand the operational realities at both ends of the scale, and we tailor our approach accordingly.

Global Well Decommissioning Service Areas

Frontier Energies delivers P&A services across major oil and gas producing regions worldwide. With established operations supported by our four offices, we are positioned to mobilize quickly in the following regions:

North America: Western Canadian Sedimentary Basin, including Alberta and British Columbia.
Europe and North Sea: United Kingdom Continental Shelf (UKCS), Norwegian Continental Shelf, and onshore UK operations.
Asia-Pacific: Offshore and onshore operations across Southeast Asia and Australia, including Queensland and Western Australia.
Middle East and Africa

If your wells are located outside these regions, contact us. Our global logistics capability and experienced personnel allow us to mobilize to new areas when the project warrants it.

Get in touch to discuss your well decommissioning project.

FAQ

Frequently Asked Questions About Well Decommissioning

What is the difference between well decommissioning and plug and abandonment?

Well decommissioning refers to the full process of permanently closing a well, including downhole isolation, equipment removal, surface restoration, and regulatory closeout. Plug and abandonment (P&A) specifically refers to the downhole phase where cement plugs and barriers are set to isolate subsurface formations. P&A is one component of the broader decommissioning process.

How long does it take to decommission a well?

Timelines vary depending on well depth, complexity, number of open zones, and regulatory requirements. A straightforward onshore well may take a few days for the downhole P&A phase, while complex offshore wells or wells with integrity issues can take several weeks. Our data-driven planning approach helps us provide accurate timeline estimates before work begins

What regulations govern well abandonment?

Every oil and gas producing jurisdiction has specific regulations governing well abandonment. In Canada, provincial regulators such as the Alberta Energy Regulator (AER) set the requirements. In the UK, the North Sea Transition Authority (NSTA) oversees decommissioning. Similar regulatory bodies exist in every region where we operate. Frontier Energies maintains current knowledge of all applicable regulations and handles permitting on behalf of our clients.

Why should an operator decommission wells proactively rather than waiting?

Delaying well decommissioning increases long-term liability. Inactive wells can develop integrity issues over time, leading to more complex and expensive abandonment operations. Many jurisdictions also impose escalating fees or penalties on operators who hold large inventories of inactive wells. Proactive decommissioning reduces total cost, eliminates environmental risk, and demonstrates responsible asset management.

Can Frontier Energies handle large-scale abandonment campaigns?

Yes. Campaign-scale P&A work is a core part of our business. Since 2017, we have plugged and abandoned more than 3,500 wells, and many of those were part of multi-well campaigns. We have the project management systems, equipment, and experienced personnel to execute large programs efficiently while maintaining our safety and quality standards.

What happens to the wellsite after decommissioning?

After the downhole abandonment and wellhead removal are complete, we restore the surface to meet regulatory and landowner requirements. For onshore sites, this typically includes removing all equipment, re-contouring the land, managing any contaminated soil, and re-establishing native vegetation. We document all restoration activities and submit the required reports to the regulatory authority for final site closure.

Start Your Well Decommissioning Project Today

Every inactive well on your books represents ongoing liability, regulatory exposure, and environmental risk. Frontier Energies has the experience, the processes, and the global reach to help you close that chapter safely and efficiently. Whether you need to abandon a single well or execute a campaign across hundreds of sites, our team is ready to put almost 50 years of experience and 3,500+ successful P&A operations to work for you.

Contact Frontier Energies to discuss your well decommissioning needs