US 12,326,389 B2
Combined processing of borehole imagers and dielectric tools
Ahmed Fouda, Houston, TX (US); Baris Guner, Houston, TX (US); and Mahmoud Eid Hussein Selim, Dhahran (SA)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Sep. 23, 2021, as Appl. No. 17/483,354.
Prior Publication US 2023/0092035 A1, Mar. 23, 2023
Int. Cl. G01N 15/08 (2006.01); E21B 47/002 (2012.01); G01R 27/26 (2006.01); G01V 3/18 (2006.01)
CPC G01N 15/08 (2013.01) [E21B 47/0025 (2020.05); G01N 15/0806 (2013.01); G01R 27/2617 (2013.01); G01V 3/18 (2013.01); G01N 2015/0846 (2013.01); G01N 2015/0853 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for obtaining calibrated permittivity dispersion measurements of a subsurface formation, the method comprising:
measuring impedance of the subsurface formation using a borehole imager at a first one or more frequencies during a first measurement;
measuring permittivity of the subsurface formation using a dielectric tool at a second one or more frequencies during a second measurement, wherein the first and second measurements are at different depths of the subsurface formation or occur during different times;
calculating a first dispersion curve of the permittivity of the subsurface formation based at least in part on the measured impedance of the subsurface formation at the first one or more frequencies;
extrapolating the permittivity of the subsurface formation to the second one or more frequencies using the calculated first dispersion curve of the permittivity of the subsurface formation;
calibrating the permittivity of the subsurface formation based at least in part on the extrapolated permittivity of the subsurface formation and the measured permittivity of the subsurface formation; and
generating a second dispersion curve of the permittivity of the subsurface formation based at least in part on one or more of the calibrated permittivity of the subsurface formation at the first one or more frequencies and the measured permittivity of the subsurface formation at the second one or more frequencies.