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:
May. 01, 1984
Filed:
Oct. 13, 1981
Applicant:
Inventors:
Wyatt W Givens, Dallas, TX (US);
Linus S Allen, Dallas, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
250270 ; 250262 ;
Abstract
A subsurface formation is irradiated with pulsed neutrons and both inelastic scattering and capture gamma-rays are measured in energy level bands characteristic of sulfur and iron. Differentials are determined between such inelastic scattering and capture gamma-rays for both the sulfur and the iron. The iron differential is then compensated by a select multiple of the sulfur differential. The ratio of the compensated iron differential and the sulfur differential is taken as a measure of the pyrite content of the formation.