Patents by Inventor Abdurranhman Sezginer

Abdurranhman Sezginer 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).

  • Patent number: 4933638
    Abstract: Borehole NMR logging apparatus and methods, and methods for the interpretation thereof. A logging tool is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focussed oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. Extremely rapid damping of the antenna between the transmitting and receiving modes of operation is accomplished by a Q-switch disclosed herein. The invention provides for the direct measurement of NMR decay having transverse relaxation time T.sub.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: June 12, 1990
    Assignee: Schlumber Technology Corp.
    Inventors: Robert L. Kleinberg, Douglas D. Griffin, Masafumi Fukuhara, Abdurranhman Sezginer, Weng C. Chew, William E. Kenyon, Peter I. Day, Max Lipsicas