US 11,754,741 B2
Method for resistivity determination with borehole imagers
Baris Guner, Houston, TX (US); and Luis Emilio San Martin, Albuquerque, NM (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 17, 2021, as Appl. No. 17/555,240.
Application 17/555,240 is a continuation of application No. 16/605,176, granted, now 11,249,217, previously published as PCT/US2018/061340, filed on Nov. 15, 2018.
Prior Publication US 2022/0107441 A1, Apr. 7, 2022
Int. Cl. G01V 3/38 (2006.01); G01V 3/20 (2006.01); G01V 1/16 (2006.01); E21B 47/00 (2012.01); E21B 49/00 (2006.01); G01V 3/00 (2006.01); G01R 27/00 (2006.01); G01V 3/24 (2006.01); G01R 25/00 (2006.01); E21B 47/002 (2012.01)
CPC G01V 3/38 (2013.01) [E21B 47/0025 (2020.05); G01V 3/20 (2013.01); E21B 47/00 (2013.01); E21B 49/00 (2013.01); G01R 25/00 (2013.01); G01R 27/00 (2013.01); G01V 1/16 (2013.01); G01V 3/00 (2013.01); G01V 3/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of resistivity imaging, comprising:
disposing a downhole tool into a borehole, wherein the downhole tool comprises:
a pad;
an array of injector electrodes; and
one or more return electrodes;
applying a voltage difference between the array of injector electrodes and the one or more return electrodes with a plurality of frequencies;
making an impedance measurement with the array of injector electrodes for each of the plurality of frequencies;
constructing a first set of formation images and a second set of formation images from the impedance measurement;
combining the first set of formation images and the second set of formation images to form a blended image, wherein at least one or more pixels from the blended image are different than 0, wherein at least one or more pixels from the blended image are different than every pixel from the first set of formation images, and wherein at least one or more pixels from the blended image are different than every pixel from the second set of formation images.