NT41664_FinalPhase2.pdf

DOWNHOLE VIBRATION MONITORING & CONTROL SYSTEM FINAL REPORT – PHASE II Starting date: June 1, 2004 Ending Date: January 31, 2006 Principal Author: Martin E. Cobern Date Issued: April 30, 2006 DOE Award Number: DE-FC26-02NT41664 Submitting Organization APS Technology, Inc. 800 Corporate Row Cromwell, CT 06416 ABSTRACT The objective of this program is to develop a system to both monitor the vibration of a bottomhole assembly, and to adjust the properties of an active damper in response to these measured vibrations. Phase I of this program, which entailed modeling and design of the necessary subsystems and design, manufacture and test of a full laboratory prototype, was completed on May 31, 2004.