The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 1990
Filed:
Jan. 23, 1989
Applicant:
Inventors:
Keith W Katahara, Allen, TX (US);
Billy Joe Smith, Richardson, TX (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
181106 ; 367 25 ; 367911 ;
Abstract
A method and tool for acoustically logging a wellbore where a transmitter simultaneously generates a plurality of separate acoustical signals having different frequencies, each effectively centered about a different resonance frequency, and then transmits the signals as a composite multi-frequency output signal having an effective broad frequency bandwidth that is capable of exciting pressure waves in a variety of different types of earthen formations.