US 11,746,642 B2
Electromagnetic imager design
Baris Guner, Houston, TX (US); Luis Emilio San Martin, Houston, TX (US); and Gary Wayne Kainer, Tomball, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Nov. 8, 2019, as Appl. No. 16/679,002.
Prior Publication US 2021/0140301 A1, May 13, 2021
Int. Cl. E21B 47/002 (2012.01); G01N 21/85 (2006.01); E21B 49/08 (2006.01); G01V 3/18 (2006.01)
CPC E21B 47/002 (2020.05) [E21B 49/087 (2013.01); G01N 21/85 (2013.01); G01V 3/18 (2013.01)] 20 Claims
OG exemplary drawing
 
12. A system for downhole imaging, comprising:
a downhole tool, wherein the downhole tool comprises:
a mandrel;
a chassis disposed in the mandrel; and
a first set of electronics disposed in the chassis;
a pad, wherein the pad comprises:
a housing, wherein the housing is at least partially metal;
a second set of electronics disposed within the housing;
a mounting bracket, wherein the mounting bracket is disposed on the housing;
at least one injector electrode disposed on the housing and electrically isolated from the housing; and
at least one return electrode disposed on the housing and electrically isolated from the housing;
an arm, wherein the arm is attached to the mounting bracket and the mandrel; and
an electrically non-conductive material, wherein the electrically non-conductive material is disposed between the pad and the mandrel; and
an information handling system connected to the pad through the first set of electronics and the second set of electronics, wherein the information handling system is configured to:
perform a frequency sweep with the at least one injector electrode;
record one or more measurements from the frequency sweep with the at least one return electrode;
identify one or more frequencies from the frequency sweep; and
identify one or more operating frequencies from the one or more frequencies.