Following up from our last post, we will take a close look at Continuity, Granularity, and Latency in this post. What are these aspects of data quality and why are they so important?
Continuity – How much source data is available without gaps or lapses? Faulty sensors and communication failures lead to an incomplete picture.
Granularity – Low frequency / granular data can mask problems. With higher frequency data, we can diagnose earlier and take corrective action.
Latency – Is data recent and relevant for modeling so we can diagnose a problematic event earlier to take corrective action sooner.
What’s the fraction of samples compared to the expected frequency? How much source data is available without gaps or lapses?
If I have 1 minute sample rate, I would expect 60 samples for a hour. However, sensors can be faulty, we can communication failures in the field. These things lead to an incomplete picture. On multiple projects, OspreyData has experienced a 30% reduction in the number of failure examples used for model training.
Is sample frequency sufficient for diagnosis and modeling purposes? Low frequency data can mask problems.
In this particular example, we have an ESP with a 1-hour sample rate. In this case, the pump was experiencing a gas lock event, and it was unable to surface fluid and the motor shutdown. However, with a higher frequency of data at 5 minute samples, we can erratic behavior indicating gas interference.
With higher frequency data, we can diagnose earlier and take corrective action sooner, and potentially avoid the shutdown entirely.
Is data recent and relevant for modeling so we can diagnose a problematic event earlier to take corrective action sooner? How often is data being received?
In this example, we can see that increased polling diagnosed problems in near real-time, and allowed for mitigation of the problems before they became severe.
It becomes clear that high data quality can lead to insights which lead to actions that save time and expense. We would be grateful to work with you and your organization on improved data quality and production monitoring.
For more information on how Unified Monitoring and OspreyData can work for you, feel free to view our Unified Monitoring Solutions Page and request an online demo to view at your convenience. If you would like to launch your digital oilfield today, contact us now!