System Identification of Coupled Vertical and Rotational Stick-Slip Drilling Dynamics on a Modeled Rig for Adaptive Control

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dc.contributor.committeeMemberSong, Gangbing
dc.contributor.committeeMemberFranchek, Matthew A.
dc.contributor.committeeMemberMo, Yi-Lung
dc.creatorHunter, Graham
dc.creator.orcid0000-0002-4625-4431
dc.date.accessioned2018-03-12T19:49:02Z
dc.date.available2018-03-12T19:49:02Z
dc.date.createdDecember 2017
dc.date.issued2017-12
dc.date.submittedDecember 2017
dc.date.updated2018-03-12T19:49:02Z
dc.description.abstractThis thesis investigates a system identification method to parametrically identify single input single output (SISO) coupled vertical and rotational drilling dynamics with stick-slip using an excited Rate of Penetration (ROP) command input into a physically modelled drilling rig at fixed rotational top drive speeds. A non-parametric Frequency Response Function (FRF) for the axial dynamics and rotational dynamics is created and compared to the FRF generated by the parametric system ID method at each rotational speed level. If non-parametric and parametric FRFs are in agreement, then the discrete parametric transfer function for both, the axial or rotational dynamics can be used for plant modeling. Likewise, a multiple input multiple output (MIMO) system is identified with persistently excited commanded ROP and RPM as inputs while WOB and Torque are the outputs. These identification methods can be potentially applied in real-time during drilling to identify typical drilling dynamics for adaptive control.
dc.description.departmentMechanical Engineering, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/2916
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectSystems
dc.subjectIdentification
dc.subjectDrilling
dc.subjectDynamics
dc.titleSystem Identification of Coupled Vertical and Rotational Stick-Slip Drilling Dynamics on a Modeled Rig for Adaptive Control
dc.type.dcmiText
dc.type.genreThesis
local.embargo.lift2018-12-01
local.embargo.terms2018-12-01
thesis.degree.collegeCullen College of Engineering
thesis.degree.departmentMechanical Engineering, Department of
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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