MyBarrier Well

MyBarrier Well is a cutting-edge web-based system evaluating the risk of well blowouts during the well operational phase.

MyBarrier Well is a cutting-edge web-based system developed by DNV in collaboration with Petrobras well integrity engineers, aimed at quantitatively evaluating the risk of well blowouts during the well operational phase. This tool presents features for managers and engineers from energy operating companies responsible for well integrity management. Utilizing a cavity and barrier element model and a graph theoretic algorithm, MyBarrier Well identifies all potential leak paths from the well. Furthermore, it employs an advanced time-dependent reliability model to evaluate significant blowout risk indicators, including the instantaneous frequency of uncontrolled leaks, the cumulative probability of a blowout throughout the remaining life of the well, and the incremental cumulative risk (ICR) generated by a detected barrier element failure.

The risk of blowout is visually represented by a three-zone model: an acceptable zone (green), a tolerable zone (orange), and an unacceptable zone (red), separated by two control lines. These control lines—lower (orange) and upper (red)—delineate the boundaries between the zones, allowing operators to understand the current risk level effectively. Upon detecting a failure, MyBarrier Well calculates its impact on these risk indicators and the time required for the risk to reach the control lines, facilitating timely and informed decisions for well intervention and repair. This makes MyBarrier Well Integrity the most advanced failure management system for well integrity during the operational phase of a well, ensuring unparalleled safety and reliability.

MyBarrier Well risk assessment

Watch the MyBarrier Well introduction video.

Our service

For the past five years, DNV Risk Management South America has developed the web-based computational system MyBarrier Well. This system performs a detailed quantitative assessment of the risk of a well blowout during its operational phase, which includes production, well interventions and temporary abandonment. It has been specially designed to serve as a risk-informed failure management tool to help well integrity managers and engineers make decisions regarding detected barrier element failures during operation.

MyBarrier Well version 2.0 has just recently been completed and incorporates several new functionalities in addition to those of the previous version. With it, well integrity engineers and managers can perform the following analyses:

What is the current (today) blowout risk of each well? What is the risk status of each well compared to the company risk management criteria – acceptable, tolerable, unacceptable?
Which wells have their blowout risks approaching the Lower Control Line (between acceptable and tolerable risk zones) and which ones are approaching the Upper Control Line (between tolerable and unacceptable risk zones)? How much time they have from today until their blowout risk reach each of the two control lines?
What is the impact of a detected failure (or failures) of any barrier element on the blowout risk indicators? In which risk zone is the well after the detected failures? Can we continue to operate the well with the detected failure or we have to immediately close the well for repair?
How much time do we have until an intervention must be performed to avoid the risk of the well becoming unacceptable? What is the blowout risk of each type of intervention? In which cases can it outweigh the risks of not intervening?
Which wells should we focus our integrity management attention (e.g., intervention resources) now or within the next couple of months?
What are the impacts of different frequencies of test (function/pressure tests) for various groups of tested barrier elements?
What failure correction strategy leads to the lower cumulative blowout risk over the remaining life of a well after detection of one or more barrier element failures? A comparative risk analysis of the various strategies can be performed in one run leading to clear results with respect to the preferred strategies.

Know more about MyBarrier Well 2.0

We are very happy to announce that this much-improved version 2.0 of the system is now completed and ready to be used - MyBarrier Well 2.0! A list of new functionalities and usability improvements implemented in version 2.0 are presented below together with some of the main functionalities of version 1.0.

Our expertise

In general, energy companies that own wells have a well integrity management system based on a qualitative well failure model, which may be sufficient for some objectives, however it is not specific enough when there is focus on analyzing specificities of a given well. During operation, the events (failures, interventions, repairs, tests) differ from well to well, and qualitative tools may not be robust and specific enough to support decision-making and prioritization. Based on that, DNV Risk Management South America has joined forces with Petrobras, putting together DNV deep knowledge in reliability engineering and risk analyses together with Petrobras’ well integrity expertise, one of the largest national energy companies in the world. With this, MyBarrier Well is the most robust tool for blowout risk evaluation in the market, providing tailor made quantitative risk results with strong technical basis and validation by operators, with standardized risk assessment for all wells, regardless of location and team involved in the risk assessment. The tool is currently implemented and in use in Petrobras and Enauta providing risk-informed support for operational decisions related to well integrity management. The tool has also been used to provide quantitative risk results for Total Energies and Trident Energies to support well integrity decision-making for specific wells in Brazil.

The application of MyBarrier Well supports operational decision-making with an advanced quantitative assessment of blowout frequencies and other key risk indicators, thus reducing subjectivity and enhancing traceability and consistency in processes across the company, ensuring the same analytical evaluation for all wells.

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Know more about MyBarrier Well 2.0

#	Functionality	MyBarrier Well 1.0	New! - MyBarrier Well 2.0
# 1	Functionality Number of reliability models during the lifetime of the well	MyBarrier Well 1.0 A single model for the production phase during the lifetime of the well	New! - MyBarrier Well 2.0 Multiple models representing various production, temporary abandonment, and workover phases during the lifetime of the well Allows use of different failure rates for the same barrier elements during different lifetime periods Allows use of different attributes (monitored, tested, non-tested) for the same barrier elements during different lifetime periods.
# 2	Functionality Test Planner for tested barrier elements	MyBarrier Well 1.0 Capable of creating groups of barrier elements that are tested at the same time Allows evaluation of the impact of different test frequencies of different groups of barrier elements on the instantaneous frequency of blowout and on the cumulative probability of blowout during the remaining lifetime of the well Assumes that barrier elements are truly periodically tested It is possible to introduce a variation of testing frequencies during the lifetime, but this is not a very friendly task.	New! - MyBarrier Well 2.0 New much improved test planner allows easier creation of groups of tested barrier elements Evaluation of the impact of different test frequencies of different groups of barrier elements (same as in MyBarrier Integrity 1.0) Assumption of periodicity of tests is only used to create an initial table of proposed test dates Very easy to create the generated test date table for the introduction of different test frequency for different periods Generated test date table can be easily edited to introduce non-periodicities and modify true test dates during the operational phase.
# 3	Functionality Temporary abandonment analysis (TAA)	MyBarrier Well 1.0 Not included	New! - MyBarrier Well 2.0 New temporary abandonment analysis module Allows a sensitivity analysis to be conducted which calculates the variation of the percent contribution for various durations of temporary abandonment to the accumulated probability of blowout during the remaining life of the well for different temporary abandonment durations over the referred period Analysis can be performed assuming fixed or variable date of end of operation of the well.
# 4	Functionality Risk of blowout during various types of well workovers	MyBarrier Well 1.0 Not included	New! - MyBarrier Well 2.0 New module for the calculation of risk of blowout during various types of workovers Two types of assessments can be performed: 1) simple models based on historical data for risks of different types of workovers and 2) detailed models based on the decomposition of the various types of workovers into their operational tasks and respective durations Simplified models of well cavities and existing barrier elements are used for the different tasks.
# 5	Functionality Number of uncontrolled leak dimensions	MyBarrier Well 1.0 A single leak dimension is evaluated which is considered to represent possible leaks of any size Results tend to be somewhat conservative when compared to historical blowout probabilities during the lifetime of the well; main reason is because historical data tend to capture mostly large leak blowouts.	New! - MyBarrier Well 2.0 Frequency of uncontrolled leaks are evaluated for three different leak dimensions: large, small, and total Failure rates of different barrier elements are adjusted for large and small leaks based on physically possible leak sizes, historical field observations and on expert opinions A detected large leak of a barrier element is assumed to affect both large and small leak frequencies, but a detected small leak failure is assumed to impact only the small leak frequency of remaining barrier elements Resulting cumulative of large leak blowouts during the lifetime of the well are more in line with historical blowout probability values.
# 6	Functionality Analytical Module	MyBarrier Well 1.0 Not available MyBarrier Integrity 1.0 was designed to be used for providing support to risk-informed decisions for well integrity operational decisions.	New! - MyBarrier Well 2.0 A new Analytical Module is provided in addition to the Operational Module of the 1.0 version All features in the Operational Module are available in the Analytical Module The Analytical Module allows comparative analysis of various cases where each one may represent a possible solution to an operational problem Each case in a Case Study can represent different solutions involving barrier elements and cavities or different implementation of operational strategies such as workovers, test frequency variations, barrier element monitoring strategies, among others All quantitative results are presented in comparison to the results of an elected “base case”; various graphic results are also presented for better visualization- Analytical Module allows sensitivity analyses and comparison of alternative hypothetical well configurations for decision-making, without polluting the operational well database of existing wells.

More information

MyBarrier Well

Quantitative Blowout Frequency Assessment