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:
Jun. 08, 1976
Filed:
Feb. 27, 1975
Applicant:
Inventor:
Eddie P Howell, Plano, TX (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
340 / ; 340 / ; 181103 ; 340 / ;
Abstract
A pulse of ultrasonic acoustic energy applied to an earth formation by means of a well logging tool initiates a first compressional formation pulse followed by a secondary pulse of lower amplitude and velocity traveling exclusively in the formation fluid. These two pulses are located, identified and quantized with cross-correlation techniques to give a direct indication of formation permeability, to identify accurately the nature of the formation fluid, and to provide a more accurate determination of formation porosity.