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. 20, 1987
Filed:
Oct. 17, 1984
Applicant:
Inventors:
Darrell S Sonne, Katy, TX (US);
Allen Nunley, Houston, TX (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ; G01T / ; G01T / ;
U.S. Cl.
CPC ...
250366 ; 250256 ; 2503 / ; 250369 ;
Abstract
For use in downhole logging tools responsive to gamma rays or x-rays, an improved scintillation device is set forth. In the preferred and illustrated embodiment, a scintillation crystal, typically sodium iodide (thallium activated), is utilized. It is an elongated, regular structure having two ends, and separate photomultiplier tubes (PMT) are attached at the separate ends. The two PMT output signals are supplied to a circuit which forms a signal adjusted or modified to compensate for loss of light energy arising during transmission through the scintillation crystal to the PMT's.