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:
Dec. 22, 1987
Filed:
Jul. 15, 1986
Applicant:
Inventor:
Wyatt W Givens, Dallas, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324303 ; 324318 ;
Abstract
A nuclear magnetic resonance logging tool comprises spaced-apart arrays of magnets, oppositely polarized, to produce a homogeneous static magnetic field parallel to the borehole when positioned adjacent the borehole wall. Magnetic material is positioned between the arrays of magnets and the borehole fluid when the logging tool is so positioned against the borehole wall to create a weaker magnetic field within the borehole. Transmitter means produces a radio frequency polarization pulse. Receiver means detects nuclear magnetic resonance in the formation following the termination of the polarization pulse.