Abstract
Directional drilling techniques, based on rotary steerable systems, are used to generate complex curved boreholes. In practice, however, boreholes drilled with such systems often show instability-induced borehole spiraling, which negatively affects the borehole quality and increases drag losses while drilling. As a basis for controller synthesis, we present a directional drilling model in terms of delay differential equations characterizing the evolution of the borehole inclination. Next, the problem of curved well-bore generation is formulated as a tracking problem and an output-feedback control strategy is developed, solving this tracking problem while guaranteeing the prevention of borehole spiraling.
Original language | English (US) |
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Pages (from-to) | 260-265 |
Number of pages | 6 |
Journal | IFAC-PapersOnLine |
Volume | 28 |
Issue number | 6 |
DOIs | |
State | Published - Jul 1 2015 |
Event | 2nd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production, OOGP 2015 - Florianopolis, Brazil Duration: May 27 2015 → May 29 2015 |
Bibliographical note
Publisher Copyright:© 2015, IF AG.
Keywords
- Delay differential equations
- Directional drilling
- Output-feedback control
- Tracking control