+1 510-522-0700

How to Mitigate High Water Cut in Oil Production with Data Visualization

| |

Easily compare oil-gas-water ratios among several wells. Data used with permission of owner.

The water/oil ratio (WOR) is one of the more important metrics in calculating the economic value of a producing well. Reservoir engineers calculate water cut to update reserve and ultimate oil recovery estimates and refine the decline curve over the life of a well. With a WOR trending toward 100%, production engineers, reservoir engineers, and even financial analysts need to pool their skills and experience to analyze well performance and determine the well’s economic future. The barrel price of oil, utilities, maintenance, water remediation and disposal, land, and other expenses factor into the profitability equation.

No reservoir team wants to shut a well without exploring viable options to mitigate high water cut oil production. Reservoir teams gain a more detailed understanding of the factors that affect WOR by integrating and visualizing production data with data that characterize developing reservoir conditions. With this insight, engineers can more readily identify the factors or causes of increasing WOR and determine effective mitigation strategies.

Compare High Water Cut in Oil Production With Other Wells

The high water cut in oil production for a specific well can be compared with decline curves for nearby wells or wells with similar geologic, and geophysical attributes. Production data, completion information, as well as secondary or tertiary recovery techniques for similar wells provide additional guidance regarding reservoir characteristics and recovery techniques and successful and unsuccessful mitigation efforts.

Without the right tools, comparing a wide range of well data can be time-consuming. Comparisons are made far more efficiently when well data is integrated and evaluated visually in 2D graphs and 3D animations over time. Shared access to all relevant well data and a collaborative visualization environment enables well-by-well comparison, assessment of the complete well program, e.g., injectors and producers, or even evaluation of the entire oil field. With these capabilities, reservoir teams gain a far better understanding of the efficacy of previous high water cut oil production mitigation efforts.

Identify Factors Influencing High Water Cut in Oil Production

Visualization of reservoir conditions and monitoring production data also makes it easier to identify factors that are likely to influence high water cut. Production data reported on a spreadsheet is not as meaningful as production data visualized in context of the local geology and offset wells. Gradual or sudden changes in water cut are more easily diagnosed when production data is analyzed along with detailed, relevant data that document well planning, drilling, completion, and operations of all wells.

Easy access to this level of detail, allows reservoir engineers to more readily and confidently identify problems, such as those listed below:

Casing leak caused by sucker rod abrasion
Incomplete plug closure in depleted zone
Water zone not completely isolated from pay zone
Coning in vertical wells
Identified By
3D visualization of the wellbore shows a severe dogleg at the water zone level
Earth model shows where tracers added to the injection well are migrating to the production well
Latest seismic survey and review of 3D subsurface formation model reveals miscalculation in initial depth measurement for the zone
Comparison of the seismic survey with increasing WOR indicates a rise in oil-water-contact (OWC) across wells
Mitigation Strategy
Cementing, patch tubing
Install mechanical or inflatable plugs to close the gap
Install mechanical or inflatable plugs to close the gap
Decrease well production rate; Perforate the water zone or use tubing and annulus to coproduce separately, Well recompletion at a different depth, Horizontal wells for future development to minimize drawdown

That’s certainly not a complete list of the problems that lead to high water cut in oil production, but it does illustrate how access to relevant well and subsurface data—and the ability to visualize it—help isolate the source of water, identify the problem, and propose appropriate solutions.

CoViz 4D to Identify High Water Cut in Oil Production

Reservoir engineers contending with high water cut in oil production can benefit from the capabilities of, a versatile data integration and visualization software developed for the petroleum industry. CoViz 4D easily integrates and visualizes a wide range of data that reservoir and production engineers, geologists, and petrophysicists rely on. By combining these data to provide a detailed 3D visualization of subsurface environments, petroleum professionals gain a more detailed understanding of the interplay of reservoir characteristics and development decisions that affect well performance.

CoViz 4D is exceptional in enabling reservoir engineers to visualize changing reservoir conditions and their impact on production.

CoViz 4D is exceptional in enabling reservoir engineers to visualize changing reservoir conditions and their impact on production. The ability to analyze trends in WOR over time, in a single well or in comparison to nearby wells, and review the effectiveness of previous mitigation techniques, gives reservoir engineers greater confidence. With CoViz 4D, reservoir engineers gain insight into how to avoid potential water cut issues when planning future wells, monitor developing water cut metrics, identify problem sources, and devise appropriate mitigation strategies for high water cut in oil production.

CoViz 4D, a data visualization and analytics software from Dynamic Graphics Inc. gives oil and gas professionals the ability to easily access and analyze relevant data associated with HPHT reservoirs. Powerful visualization capabilities enable reservoir teams to explore data relationships, calculate gradients, and more accurately analyze how subsurface conditions influence drilling and completion methods. To learn more about CoViz 4D contact our team.


Visualization and Integration of Oil and Gas Production Data in Reservoir Development

Data used by permission of the owner.Oil and gas production data is key to understanding the impact development decisions have on reservoir performance. Monitoring production data over the life of a field facilitates the predicted performance of planned wells to be...

How to Increase Oil Well Production Through Reservoir Analytics

Using time-based analytics to examine production and injection cycles on a target well with surrounding offset wells can lead to improved production and reduced costs.When determining how to increase oil well production, analysts must consider the ways in which...

Leveraging a Geomechanics Workflow to Enhance Reservoir Analysis

CoViz 4D offers a rapid, easy to use, first-look geomechanical analysis for assessing reservoir thickness changes that could lead to well integrity issues.Geomechanical analysis is critical to understanding reservoir thickness changes that occur due to production and...

Utilizing Big Data in Upstream Oil and Gas to Refine Completion Technique in Unconventional Reservoirs

Upstream oil and gas production deals with complex analysis of large data volumes related to the exploration and recovery of an asset. Big data has helped maintain a competitive edge for the industry by proving as a tool for efficient decision-making for the upstream...

Reservoir Surveillance: Understanding the Role of Data Integration in a PRM Environment

Using seismic differencing analysis in CoViz 4D can highlight changes in water saturation over time to compare with water encroachment at a producing well location in the reservoir simulation model.Permanent Reservoir Monitoring (PRM) produces large amounts of...

Planning HPHT Well Completions

Completions in HPHT environments are challenging and costly. 3D visualization and analysis of reservoir conditions and characteristics, along with offset well data, can significantly increase safety and success rates. Data used with permission by the...

Seismic Reservoir Monitoring Through Visualization

An ideal design, development, and management plan for hydrocarbon asset development comes from having a better understanding of  all known geological and petrophysical aspects of the subsurface. But given the dynamic nature of the reservoir and its attributes, petroleum professionals can encounter some complexities in the process of in-depth analysis.

Share on Social Media