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:
Jan. 27, 1976
Filed:
May. 21, 1974
Applicant:
Inventor:
John G Kampfer, Houston, TX (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ; H04J / ; G01V / ;
U.S. Cl.
CPC ...
340 / ; 250256 ; 179 / ; 328157 ; 328139 ; 340 / ; 340203 ;
Abstract
A method and apparatus for converting a single function, i.e., hydrocarbon detection, well logging tool to a dual function tool, i.e., the detection of naturally occurring gamma rays, by making the amplitude reference pulses necessary for single function operation related in rate to the second function. A minimum constant rate of amplitude reference pulses are provided to ensure the operability of the single function tool in the absence of the second function and an adjustment is thereafter made to remove the effects of this minimum rate of reference pulses.