Managed Pressure Drilling
Managed Pressure Drilling (MPD) controls the pressure within the drilling process, so drilling can take place as smoothly as possible. It reduces pressure fluctuations and increases operational safety, resulting in minimum loss of time and budget.
Drilling processes are expensive and complex, which means that the drilling company and the oil company want to be kept up to speed about the operation.
This used to mean hiring staff who could watch the drilling process live on location. Obviously, it would be much less expensive, more convenient and safer if this assurance can be automated and you could monitor processes centrally with a live, high-resolution connection transmitted to land via the satellite.
Saving operational cost
To cut that cost, Noble hired Helin. The data transmission was up and running within 3 weeks. This meant Noble now was able to monitor the MPD process and knew exactly what was happening.
Step 2 was to automate reporting. Instead of experts manually filling out reports, now there are daily reports produced automatically. This puts the experts firmly back in their expert role. Needless to say this increases job satisfaction, something we can't afford to ignore with good technical staff being at a premium.
Minimizing downtime
Step 3 was to check the state of the rubber seal, which closes off the drilling process. The pressure of the drilling fluid can vary responding to the pressure of the oil and the rubber seal maintains this balance. This means you need to predict the pressure and wear and tear on the rubber seal as you go.
A rubber seal may sound like not a big deal to replace, but in the drilling industry it is. You don't want to replace the seal too early, because that leads to extra, unneeded downtime. Replacing the seal too late leads to unplanned downtime, a whole day is not unusual in this situation. You really don't want to have to replace the seal in the middle of a drilling cycle as this could result in a further half a day of downtime.
What Helin did was use predictive analytics to predict when the rubber seal would need replacing. Then the seal could be replaced as late as possible, at the right time in the drilling cycle. This leads to less overall downtime. Given vessel day rates, it makes a lot of sense to get this right.
Noble was very satisfied with Helin's solution and the quick financial benefits it provided. If you have a situation that you know would benefit from intelligent data, please get in touch.
By Thomas Feenstra