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Title: Directional antennas for electromagnetic mapping in a borehole

A bottom hole assembly used for a field operation is disclosed herein. The bottom hole assembly can include at least one directional antenna disposed on an outer surface of a first tubing pipe of a tubing string, where the at least one directional antenna receives a first electric current from at least one power source, where the first electric current generates a first magnetic field that radiates from the at least one directional antenna into a formation. The bottom hole assembly can also include at least one receiver disposed on a second tubing pipe of the tubing string, where the at least one receiver receives the first magnetic field returning from the formation.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1354799
Assignee:
LOS ALAMOS NATIONAL SECURITY, LLC LANL
Patent Number(s):
9,638,827
Application Number:
14/498,511
Contract Number:
W-7405-ENG-36
Resource Relation:
Patent File Date: 2014 Sep 26
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 58 GEOSCIENCES

Other works cited in this record:

Electromagnetic propagation tool using magnetic dipole antennas
patent, February 1996

Apparatus and method for determining parameters of formations surrounding a borehole in a preselected direction
patent, April 1996

Method and apparatus for transverse electromagnetic induction well logging
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Method and apparatus for evaluating the resistivity of formations with high dip angles or high-contrast thin layers
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Multi-component induction instrument
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patent-application, January 2008

Directional Resistivity Antenna Shield
patent-application, March 2011

Directional Resistivity Measurement For Well Placement And Formation Evaluation
patent-application, September 2011

Antenna With A Concentrated Magnetic Field
patent-application, June 2014

Look Ahead Logging System
patent-application, January 2015

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