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:
Nov. 12, 1991
Filed:
Jun. 11, 1990
Applicant:
Inventors:
Irwin R Supernaw, Houston, TX (US);
Thomas M Williams, Houston, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
250264 ; 250266 ; 2503562 ;
Abstract
Brines in earth formations in the vicinity of a well borehole are bombarded with neutrons. The neutrons are slowed to thermal energy and captured by sodium atoms in the brine according to the nuclear reaction .sup.23 Na (n, .gamma.) .sup.24 Na. Spaced arrays of gamma ray detectors in a sonde in the borehole obtain gamma ray measurements following activation to obtain measurements of horizontal brine flow past the borehole. The detector arrays are vertically spaced from each other along the axis of the sonde. Changes in the count ratios of the detector arrays indicates a vertical flow of the brine.