Abstract

Even with lower rig rates due to the lower oil prices, the daily cost of running a drilling rig is still high. When an offshore rig is drilling, this can extend well over 100.000 USD an hour with all personnel and services onboard. Monitoring and improving rig and drilling key performance indicators is therefore an important factor that can lower well construction cost.

This paper will focus on how we can monitor, visualize and improve weight to weight connection time and related sub components over time. In addition we will look into real-time monitoring of weight to weight time while drilling and which corrective actions can be taken. We will express factors that are contributing to excess usage of time in some sections drilled, outlined with examples and use cases. Very often we do see large potential for improvements that again will save rig time.

Typically we can discover extended circulating time including forward and backward reaming and excess time used on taking surveys. On some rigs, we also observe slip to slip time to be below average. Wired pipe operations compared to normal mud pulse telemetry will also be presented.

Statistics will be presented with a composite average best performance for a number of wells. In our conclusion and findings, we will present documented results from rigs that have undergone rig performance programs over time and the resulted potential cost savings.

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