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:
Jul. 28, 1987
Filed:
Oct. 05, 1984
Applicant:
Inventor:
Mark E Willis, Carrollton, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
367 57 ; 367 27 ; 367 31 ; 367 75 ; 181102 ;
Abstract
A borehole logging tool includes at least one acoustic energy transmitter and at least one spaced apart acoustic energy receiver. Acoustic energy signals travel from the transmitter to the receiver directly through the subsurface formation adjacent the borehole and indirectly through reflections from subsurface formation changes below the bottom of the borehole. The difference in travel times of the directly arriving and indirectly arriving signals are determined for like acoustic waveforms as a measure of the depth of the subsurface reflecting formations below the borehole.