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:
Dec. 05, 1989
Filed:
Jan. 19, 1988
Applicant:
Inventor:
Frank Leland, Arlington, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
367 25 ; 367 43 ;
Abstract
A method for separating high frequency impulse data from received signal in which it is superimposed on low frequency noise is disclosed. Median filtering is applied to the received signal to remove the impulse data therefrom. The resultant filtered signal is subtracted from the original signal; the remainder includes only the impulses from the original signal. The invention is described in connection with borehole imaging and casing collar locating logging operations, both useful geophysical tools.