Nonlinear modeling for analysis of directional drilling processes

Fahim Shakib, Emmanuel Detournay, Nathan van de Wouw

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Abstract

Directional drilling allows for the drilling of boreholes with complex shapes, which are needed to reach unconventional reservoirs of oil, gas and mineral resources. Figure 1 shows a sketch of a directional drilling system. The drillstring is a hollow slender pipe with most of it is in tension under its own weight, except for the bottom hole assembly (BHA),
which is in compression. The BHA contains several stabilizers ensuring centering of the BHA inside the borehole, a bit penetrating the rock formation and a rotary steerable system (RSS), being a robotic actuator, steering the BHA. In practice, directional drilling often results in spiraled boreholes, see Figure 2 for an illustration. These are unwanted selfexcited oscillations in the borehole geometry which negatively influence the drilling process and the borehole quality
Original languageEnglish
Pages95
Publication statusPublished - 2018
Event37th Benelux Meeting on Systems and Control - Kontakt der Kontinenten, Soesterberg, Netherlands
Duration: 27 Mar 201829 Mar 2018
http://www.beneluxmeeting.nl/2018/

Conference

Conference37th Benelux Meeting on Systems and Control
CountryNetherlands
CitySoesterberg
Period27/03/1829/03/18
Internet address

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