Revitalising India’s Mature Oilfields: Technologies and Strategies to Improve Domestic Crude Production

Mature oilfields are not necessarily exhausted assets. Advanced recovery technologies, artificial lift optimisation, well interventions and improved reservoir management can help operators recover additional hydrocarbons and extend the productive life of existing infrastructure.

For India, revitalising these assets is becoming an important part of strengthening domestic crude production, reducing dependence on imports and improving the productivity of established upstream operations.

Why India's Mature Oilfields Need Redevelopment

Producing fields across Mumbai Offshore, Assam, Gujarat and Rajasthan have contributed significantly to India's oil production. However, ageing reservoirs often experience declining pressure, increasing water production, reduced well productivity and rising operating costs.

Ageing production facilities, corrosion, equipment failures and changing reservoir conditions can further affect output.

Addressing these challenges requires an integrated approach that considers reservoir performance, well conditions and surface infrastructure rather than focusing on individual production problems.

Enhanced Oil Recovery: Unlocking Additional Production

Enhanced Oil Recovery (EOR) is becoming increasingly important for improving recovery from mature reservoirs.

Conventional production methods recover only a portion of the oil originally present underground. EOR technologies help mobilise additional hydrocarbons through methods such as chemical injection, thermal recovery and gas injection.

Polymer flooding can improve water displacement, while surfactants help reduce the resistance between oil and water. Thermal techniques such as steam injection are particularly relevant for heavy-oil reservoirs.

India's enhanced recovery policy framework encourages operators to screen eligible fields, conduct pilot projects and deploy suitable recovery technologies. The government has indicated that a five-percentage-point improvement in recovery could potentially add 120 million metric tonnes of oil over 20 years. This remains a projected outcome rather than guaranteed additional production.

Artificial Lift and Well Intervention Improve Well Productivity

As reservoir pressure declines, artificial lift systems become essential for maintaining commercially viable production.

Electric submersible pumps, gas lift systems and progressive cavity pumps help move hydrocarbons to the surface under different operating conditions. Optimising these systems according to changing well conditions can improve production efficiency and reduce equipment failures.

Well intervention and workover programmes offer another opportunity to restore lost production. Activities such as tubing replacement, scale removal, reperforation, stimulation and water shutoff can address mechanical restrictions and improve access to producing zones.

Oil India has reported using hydrofracturing, plunger lift, workover operations and other production-enhancement techniques across its assets. Its FY 2024–25 annual report recorded 294 workover jobs during the year.

Digital Technologies Strengthen Reservoir Management

Effective mature-field redevelopment depends on accurate understanding of changing reservoir conditions.

Modern reservoir surveillance combines production histories, pressure measurements, well testing, water-cut trends and geological models to identify underperforming areas and potential recovery opportunities.

Digital production platforms and predictive analytics can help operators monitor well performance, forecast production decline and identify operational abnormalities. Reservoir simulation and 4D seismic monitoring can also support better understanding of fluid movement and changing reservoir conditions.

These technologies allow engineering teams to make more informed decisions about well interventions, injection strategies and production optimisation.

Managing Water Production and Reservoir Performance

Increasing water production is a common challenge in mature oilfields. Excessive water entry can reduce oil output while increasing pumping, separation and treatment requirements.

Operators use production logging and well diagnostics to identify water-producing intervals. Depending on reservoir conditions, interventions may include selective isolation, water shutoff treatments and improved injection management.

At the field level, optimising water injection and treatment facilities can improve reservoir performance while reducing unnecessary operating costs.

India's Mature-Field Development Through Technology Partnerships

Technology partnerships are playing an important role in improving production from established assets.

ONGC's technical services arrangement with BP for Mumbai High, initiated in January 2025, focuses on well, reservoir and facility management, including production optimisation and facility debottlenecking.

In May 2026, ONGC also announced BP Exploration Services India as the technical services provider for Western Offshore fields outside Mumbai High.

The programme reflects growing interest in combining national oil companies' asset knowledge with specialised reservoir-management expertise and advanced production technologies.

Such partnerships can support better well performance, improved recovery planning and more effective utilisation of existing infrastructure.

Key Challenges in Mature Oilfield Redevelopment

Despite the opportunities, mature-field redevelopment involves several challenges. Reservoir uncertainty makes it difficult to predict the results of recovery interventions, while advanced technologies often require significant capital investment.

Ageing infrastructure, rising operating costs, limited technical expertise and changing crude prices can also affect project economics.

Successful implementation requires reservoir-specific technology selection, pilot testing, reliable production data and coordination between subsurface, drilling, production and facility teams.

India's established oilfields will remain important to domestic crude production. Their future contribution will increasingly depend on how effectively operators combine enhanced recovery, artificial lift optimisation, well intervention and digital reservoir management.

Government incentives, technology partnerships and targeted infrastructure investments are creating opportunities to improve production from existing assets.

Rather than relying exclusively on new exploration, India can strengthen its upstream production base by improving recovery from reservoirs and infrastructure that are already in operation.

Revitalising mature oilfields is therefore an important part of India's broader objective of improving domestic hydrocarbon production and building a more resilient upstream industry.

The Future of Oil & Natural Gas Conference 2026, organised by PTN Events, brings together exploration and production operators, policymakers, infrastructure developers, technology providers and industry professionals to discuss developments shaping India's oil and gas sector.

Key areas include upstream production, mature-field redevelopment, enhanced oil recovery, offshore operations, digital technologies and infrastructure investment.

Explore the conference:

https://ptnevents.com/conferences/future-oil