US 12,266,869 B2
Co-located antennas
Anand Prakash, Tomball, TX (US); and Matthew Chase Griffing, Kingwood, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Appl. No. 16/960,268
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
PCT Filed Mar. 5, 2018, PCT No. PCT/US2018/020965
§ 371(c)(1), (2) Date Jul. 6, 2020,
PCT Pub. No. WO2019/172880, PCT Pub. Date Sep. 12, 2019.
Prior Publication US 2021/0075110 A1, Mar. 11, 2021
Int. Cl. H01Q 7/08 (2006.01); G01V 1/52 (2006.01); G01V 3/28 (2006.01); H01Q 1/08 (2006.01); E21B 47/12 (2012.01)
CPC H01Q 7/08 (2013.01) [G01V 1/52 (2013.01); G01V 3/28 (2013.01); H01Q 1/085 (2013.01); E21B 47/12 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An antenna assembly, comprising:
a tool mandrel comprising:
a core positioned about a circumference of the tool mandrel; and
an outer surface of the core;
a first coil antenna comprising a first plurality of windings wrapped on the outer surface of the core,
wherein the first coil antenna is arranged in a first orientation, and
wherein the first plurality of windings wrap about the tool mandrel at a first winding angle defined with respect to a tool axis of the tool mandrel;
a second coil antenna comprising a second plurality of windings wrapped on the outer surface of the core,
wherein the second coil antenna is arranged in a second orientation opposite the first orientation,
wherein the second plurality of windings wrap about the tool mandrel at a second winding angle defined with respect to the tool axis of the tool mandrel; and
an interposer disposed to radially displace the first plurality of windings from the second plurality of windings at a location where the first plurality of windings overlaps with the second plurality of windings.