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Advanced Downhole Torsional Oscillation Control Tool Improved Dynamics and Field Average ROP

Authors: Ahmed Meshaal Al Rubaya; Alexey Alexeyenko; Ashraf Khateeb;

Advanced Downhole Torsional Oscillation Control Tool Improved Dynamics and Field Average ROP

Abstract

Abstract The introduction of a novel torsional oscillation control technology, characterized by its high amplitude, extended attenuation length, and mode-coupled axial excitation, has been instrumental in enhancing drilling dynamics and augmenting the on-bottom drilling rate of penetration (ROP). To effectively integrate this technology, a strategic approach was employed, which involved the use of a multi-point elastic contact force software for tool placement modeling. This software is adept at pinpointing string elastic breakover points and discerning localized contact side forces within the drill string under specific drilling conditions. To realize the desired outcomes, the deployment of two torsional oscillation control tools was deemed necessary. A comprehensive evaluation was undertaken to gauge the efficacy of these tools. This involved juxtaposing the outcomes derived from the tools with the real-time operational results of downhole systems in the same field, spanning a 1000-foot interval. Key metrics, including downhole stick-slip and measurement while drilling (MWD) revolutions per minute (RPM), were meticulously assessed, considering their responsiveness to surface parameters and loads. The findings were promising. There was a marked improvement in the field ROP average, witnessing an increase of 8%. Furthermore, there was a notable decline in the peak-to-peak RPMs (stick-slip) relayed in real-time through the MWD tool. Another significant observation was the substantial reduction in the effective downhole reactive torque when juxtaposed with the offset data. The drilling dynamics data underscored an optimal downhole RPM coupled with an enhanced weight transfer. This was in alignment with the energy efficiencies projected by the model, which factored in the influence of the torsional oscillation technology and provided insights into optimal tool placement. An ancillary discovery was the improved downhole directional control. A more overarching insight was the diminished energy consumption during drilling relative to the offset. Moreover, this pioneering technology played a pivotal role in lowering the downhole MWD temperature. What sets this Torsional Oscillation Control technology apart is its innovative approach to mitigating the inherent elastic inertia moments within the drill string. These moments, which are typically stored and subsequently dissipated, are effectively addressed by this technology. A salient feature of this technology is its capability to curtail the energy loads, paving the way for heightened drilling efficiencies.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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