Reconstruction of Pipe Movement from Downhole High Frequency Measurements
- Eric Cayeux (NORCE/DrillWell) | Per Seim (Aker BP) | Lars Jørgen Solvi (Aker BP) | Håvard Ulvik (NOV) | Espen Solbu (NOV)
- Document ID
- Society of Petroleum Engineers
- SPE Norway One Day Seminar, 14 May, Bergen, Norway
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- 1.10 Drilling Equipment, 1.6.1 Drill String Components and Drilling Tools (tubulars, jars, subs, stabilisers, reamers, etc), 1.6 Drilling Operations, 1.6.6 Directional Drilling
- Bending moment, High frequency, Reconstruction, Pipe movement, Accelerometer
- 18 in the last 30 days
- 84 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 9.50|
|SPE Non-Member Price:||USD 28.00|
The lateral movement of drill-pipes, while rotating, can be the source of diverse drilling problems, such as tool-joint wear, grinding of cuttings into a fine powder that is very hard to transport, formation instabilities. Yet, it is virtually impossible to estimate the sideway displacements of drill-pipes as soon as the distance is greater than a couple of stands from a measurement source, like a dynamic sub placed in the bottom hole assembly (BHA).
It is therefore tempting to place dynamic subs along the drill-string with the objective of detecting any pipe movements that could have a negative impact on the drilling operation. However, to be useful, the measurements must be made at a relatively high frequency, in practice above 80Hz, and with enough precision. For that reason, we have placed a dynamic sub that measures axial and tangential accelerations, rotational velocity, 2-axis bending moment, torque and tension, approximatively 300m behind the bit while drilling two 9 ½-in lateral sections of a horizontal multilateral well.
The dynamic sub sent rotational speed, torque and tension at 80Hz through wired-pipe telemetry and burst data for all the measurement channels were recorded in memory, for 10s at 800Hz every 15 minutes. We have been able to test a method to collect and interpret the high-speed telemetry data, i.e. 80Hz, and we have post-analyzed the burst memory data. A methodology has been developed to compensate systematic errors on the accelerometer sensors by taking advantage of the redundancy of the measurements present in the mechanical-sub. An interpretation software has been used to reconstruct the likely 3-dimensional pipe movement at the location of the measurement tool. The analysis has shown a surprisingly large variation of pipe movement patterns and astonishing fast changing levels of lateral movement throughout the two runs where the tool has been used.
With such a pipe reconstruction methodology at hand, it can be envisaged to perform the processing downhole, i.e. directly into the dynamic sub, and to transmit information about the 3-dimensional movement of the pipe. Such information would be valuable, when received in real-time from distributed sensors, to inform the drilling operational team about possible detrimental drill-pipe vibrations that are not necessarily associated with abnormally high accelerations.
|File Size||2 MB||Number of Pages||16|
Bowler, A., Harmer, R., Logesparan, L., Sugiura, J., Jeffryes, B., Ignova, M., 2016. "Continuous High-Frequency Measurements of the Drilling Process Provide New Insights Into Drilling-System Response and Transitions Between Vibration Modes". Paper SPE-170713-PA published in SPE Drilling & Completion, vol. 31, No 2, pp. 106-118, May 2016.
Hussain, S., Dhaher, K.S., Bjørneli, H.M., Blackburn, J., Monterrosa, L., Jakobsen, T., Monsen, O.G., Haaland, S., Dahl, J., Østensen., S., Fjelde, K.K., 2017. "Drilling an ERD Well on the Statfjord Field, North Sea". Paper SPE-185935-MS presented at the SPE Bergen One Day Seminar, Bergen, Norway, 5 April.