Downhole Vibration Monitoring & Control System Metadata

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  • Main Title Downhole Vibration Monitoring & Control System


  • Author: Cobern, Martin E.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization


  • Name: Aps Technology
    Place of Publication: United States


  • Creation: 2007-03-31


  • English


  • Content Description: 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. The principal objectives of Phase II were: more extensive laboratory testing, including the evaluation of different feedback algorithms for control of the damper; design and manufacture of a field prototype system; and, testing of the field prototype in a drilling laboratory. Phase II concluded on January 31, 2006, and the Phase II final report was issued. Work on Phase III of the project began during the first quarter, 2006. Efforts the current quarter have continued to focus on the manufacture of the prototype and precommercial parts, field test planning and commercialization. The continued extreme lead times quoted by oilfield machine shops for collar components significantly delayed the deployment of the prototype and precommercial units. All parts have now been received for two units, and all but one for the third. Mechanical assembly of the first two systems is complete and the electronics installation and laboratory testing will be finished in April. We have entered into a Memorandum of Understanding with a major US oilfield equipment supplier, which calls for their assisting with our field tests, in cash and in kind. We are close to signing a definitive agreement which includes the purchase of the three precommercial units. We had also signed a CRADA with the Rocky Mountain Oilfield Test Center (RMOTC), and scheduled a test at their site, The RMOTC drilling schedule continues to slip, and the test cannot begin until the first week of May. Based on these factors, we have requested a no-cost extension to July 31, 2007.


  • Keyword: Oil Wells
  • STI Subject Categories: 02 Petroleum
  • Keyword: Monitoring
  • Keyword: Mechanical Vibrations
  • Keyword: Drilling Equipment
  • Keyword: Drilling
  • Keyword: Algorithms
  • Keyword: Performance Testing
  • Keyword: Damping
  • Keyword: Monitors
  • Keyword: Control Systems
  • Keyword: Design


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Report No.: None
  • Grant Number: FC26-02NT41664
  • DOI: 10.2172/903219
  • Office of Scientific & Technical Information Report Number: 903219
  • Archival Resource Key: ark:/67531/metadc879826