Oil and Natural Gas Corporation Limited (ONGC) has entered into a strategic partnership with United States-based energy technology provider Tachyus to deploy advanced waterflood optimization solutions across some of India’s largest mature oilfields. Announced on 4 June 2022, the initiative will involve on-premises deployment of Tachyus’ Aqueon and Subsurface Back Allocation software modules, with implementation support from Indian oilfield services firm SK Oilfield.
The collaboration represents a decisive step in ONGC’s ongoing push to extend the productive life of aging reservoirs while improving recovery factors. By combining ONGC’s operational scale with Tachyus’ reservoir analytics expertise, the project is expected to help reduce inefficiencies in water injection, optimize sweep efficiency, and capture additional oil from long-producing assets.
Why is ONGC prioritizing digital waterflood optimization in India’s mature oilfields?
Waterflooding has been a cornerstone of ONGC’s secondary recovery strategy for decades, particularly in fields where primary depletion has reached its natural limits. In this process, water is injected into a reservoir to maintain pressure and push oil towards production wells. While effective, its efficiency typically declines over time as water cut rises, reservoir heterogeneity limits uniform displacement, and breakthrough channels form.
Many of ONGC’s flagship assets such as Mumbai High, Heera, and Neelam were discovered in the 1970s and 1980s and have undergone sustained waterflood operations. By 2022, some of these reservoirs were producing high volumes of water alongside crude, creating significant handling, treatment, and disposal costs.
At a national level, India’s domestic oil production had plateaued around 600,000 to 620,000 barrels per day, far below the country’s daily consumption exceeding 4.5 million barrels. In this supply context, improving recovery from mature assets became a key operational and strategic imperative. Even a modest increase in recovery factors could translate into millions of barrels of additional production, reducing the nation’s import dependency.
What specific technologies are being deployed under the ONGC–Tachyus partnership?
Tachyus brings to India a proven suite of reservoir optimization tools designed to improve secondary recovery outcomes through advanced analytics. The ONGC project will deploy two core modules.
The first is Aqueon, a software system that models and optimizes water injection strategies using both physics-based simulations and statistical analysis. Engineers can test scenarios such as altering injection rates, changing injector–producer pair alignments, or adjusting injection timing. The model predicts the impact of these changes on oil recovery and water production, enabling decisions that maximize incremental oil output while minimizing water handling costs.
The second is Subsurface Back Allocation, a module that plays a crucial role in multi-layer or compartmentalized reservoirs by accurately attributing produced fluids to their source zones. This function provides detailed insights into which zones are contributing oil and which are producing excess water. Such clarity supports targeted interventions, including zone isolation, selective shut-offs, and optimized injection targeting.
The on-premises deployment model ensures that sensitive operational and reservoir data remain within ONGC’s secure IT environment while benefiting from Tachyus’ computational capabilities.
How is SK Oilfield supporting deployment and integration?
SK Oilfield, a domestic oilfield services provider, is managing the technical integration of Tachyus’ software into ONGC’s existing operational systems. This involves connecting the Aqueon and Subsurface Back Allocation modules with supervisory control and data acquisition (SCADA) feeds, production databases, and historical reservoir models.
The firm’s local expertise in Indian field operations, regulatory compliance, and IT infrastructure is expected to streamline implementation. By bridging global technology with on-ground operational realities, SK Oilfield’s role is key to accelerating the transition from pilot testing to full-field application.
How does this initiative align with India’s enhanced oil recovery policy framework?
India’s Ministry of Petroleum and Natural Gas has consistently encouraged upstream operators to adopt improved oil recovery (IOR) and enhanced oil recovery (EOR) methods to raise national recovery factors, which for many fields remain below the global average. In policy statements leading up to 2022, the government set a target to increase recovery rates by deploying modern technologies, including chemical EOR, polymer flooding, and digital optimization.
For ONGC, waterflood optimization using advanced analytics represents a cost-effective and scalable method to achieve these goals. Unlike chemical or thermal EOR, which require significant new infrastructure, digital optimization can be applied to existing assets with relatively low capital outlay. This makes it attractive for rapid deployment across multiple mature fields.
What operational benefits are expected from Tachyus’ software integration?
The integration of Aqueon and Subsurface Back Allocation is expected to deliver several operational benefits. More precise injection management could lower the proportion of water in produced fluids, reducing the costs associated with separation, treatment, and disposal. Optimized injection patterns could also improve sweep efficiency, increasing the likelihood of contacting and displacing bypassed oil pockets that remain in the reservoir after years of production.
In addition, automated model updates based on live field data would allow faster decision-making cycles. This would shorten the time between data collection, analysis, and operational adjustment, ensuring that field strategies remain responsive to changing reservoir conditions. Even small percentage gains in recovery factors could translate into substantial additional production volumes over the remaining life of a field.
While actual results will depend on the geology, infrastructure, and production history of each asset, global benchmarks for optimized waterflooding suggest potential recovery gains in the range of two to five percent. For high-volume fields, such an improvement would represent a significant boost to output and revenues.
How does Tachyus’ India project compare with its global track record?
Before the ONGC engagement, Tachyus had already built a reputation for delivering measurable gains in reservoir performance in North and South America. Its technology had been applied to conventional and unconventional reservoirs where secondary recovery was already established, helping clients improve production stability and reduce operating costs.
India’s entry into the Tachyus portfolio marks an important expansion into a market known for both operational complexity and large-scale production potential. ONGC’s diverse mix of offshore and onshore mature fields provides a strong proving ground for the adaptability and scalability of the company’s solutions.
What is the broader industry sentiment towards digital optimization in waterflood projects?
In 2022, global upstream operators were navigating volatile oil prices, with Brent crude trading between USD 100 and USD 120 per barrel. Fluctuating market conditions, combined with rising operating costs and a desire to defer large-scale greenfield projects, pushed companies to extract more value from their existing assets.
Digital oilfield solutions, including AI-driven waterflood optimization, were increasingly seen as practical and cost-effective tools for meeting these objectives. The growing availability of high-resolution seismic data, advanced well logging, and real-time production monitoring made such tools more effective than ever before.
ONGC’s adoption of Tachyus’ solutions was therefore in step with a wider industry trend toward analytics-driven reservoir management. This approach allows operators to capture incremental efficiency gains that can deliver strong returns without the need for major capital investments.
How could this partnership influence ONGC’s future technology adoption?
If the collaboration with Tachyus delivers on its potential, it could pave the way for broader integration of advanced analytics across ONGC’s operations. Similar methodologies could be applied to optimize gas injection projects, chemical flooding campaigns, and even unconventional hydrocarbon development in India’s onshore basins.
Successful execution could also encourage further partnerships between Indian national oil companies and global digital technology providers. By combining local operational expertise with cutting-edge international innovation, these partnerships could accelerate India’s progress towards its oil recovery and energy security objectives.
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