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Details of Grant 

EPSRC Reference: GR/K75736/01
Title: A DYNAMICAL SYSTEMS APPROACH TO MODELLING & COUNTERING LATERAL VIBRATIONS IN OIL-WELL DRILLSTRINGS
Principal Investigator: Champneys, Professor AR
Other Investigators:
Hogan, Professor SJ
Researcher Co-Investigators:
Project Partners:
Schlumberger
Department: Engineering Mathematics and Technology
Organisation: University of Bristol
Scheme: Standard Research (Pre-FEC)
Starts: 30 March 1996 Ends: 29 March 1999 Value (£): 7,528
EPSRC Research Topic Classifications:
Non-linear Systems Mathematics
EPSRC Industrial Sector Classifications:
Energy R&D
Related Grants:
Panel History:  
Summary on Grant Application Form
Self-excited lateral, or bending, vibrations in the bottom hole assembly of vertical rotating drill shafts cause tens of millions of dollars' worth of damage each year to the oil industry. These vibrations are fundamentally nonlinear and are hard to control as they occur deep underground. The proposed research is to work on an extension to a previous over-simplied model which has been shown to feature complex dynamics. The overall aims are to understand the principal mechanisms causing laterial vibrations, to simulate what is observed and to propose design criteria and operational strategies for preventing or minimising the effects of these vibrations.
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Organisation Website: http://www.bris.ac.uk