Patents by Inventor James P. DiSiena

James P. DiSiena has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and system for vertical seismic profiling by measuring drilling vibrations
    Patent number: 4965774
    Abstract: Seismic measurements are taken during drilling operations by an array of seismometers placed on the earth's surface about the axis of a drillstring connected to a conventional drillbit and wherein the drillstring has an arrangement of strain gages and accelerometers mounted thereon in such a way as to measure axial and torsional vibrations of the drillstring. Signals indicating vibrations induced by the drillbit or another source and transmitted through the drillstring are compared with signals received by the seismometer array to determine the characteristics of the formation based on measurement of acoustic velocity from direct and reflected transmission of acoustic vibrations through the formation.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: October 23, 1990
    Assignee: Atlantic Richfield Company
    Inventors: Fred W. Ng, James P. DiSiena, Amjad A. Bseisu