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. 04, 2018
Filed:
May. 27, 2016
Marc S. Ramirez, Missouri City, TX (US);
Carl M. Edwards, Katy, TX (US);
Stanislav W. Forgang, Houston, TX (US);
Babak Kouchmeshky, Kingwood, TX (US);
Marc S. Ramirez, Missouri City, TX (US);
Carl M. Edwards, Katy, TX (US);
Stanislav W. Forgang, Houston, TX (US);
Babak Kouchmeshky, Kingwood, TX (US);
BAKER HUGHES, A GE COMPANY, LLC, Houston, TX (US);
Abstract
A nuclear magnetic resonance apparatus for estimating properties of an earth formation includes a carrier configured to be deployed in a borehole in the earth formation and at least one transmitting assembly disposed in the carrier and configured to generate an oscillating magnetic field in a volume of interest within the earth formation. The apparatus also includes at least one receiving assembly disposed in the carrier and configured to detect a nuclear magnetic resonance (NMR) signal originating in the volume of interest. In this apparatus, the receiving assembly includes at least a first longitudinal region with a loop coil and a butterfly coil, the loop coil central axis being located over a region of the magnet assembly where a static magnetic field is predominantly along an azimuthal direction to the carrier and the butterfly coil being at least partially overlapped with the loop coil to reduce mutual coupling.