US 12,140,724 B2
Velocity correction with joint inversion
Xiang Wu, Singapore (SG); and Yadong Wang, Singapore (SG)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,397.
Prior Publication US 2023/0098032 A1, Mar. 30, 2023
Int. Cl. G01V 3/20 (2006.01); G01V 3/36 (2006.01); G01V 3/38 (2006.01)
CPC G01V 3/20 (2013.01) [G01V 3/38 (2013.01); G01V 3/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
disposing a downhole tool into a borehole;
taking two or more measurements of the borehole with one or more pads disposed on the downhole tool;
creating two or more images from the two or more measurements to form an image log at a depth within the borehole;
identifying a mismatch distance between the two or more images in the image log;
determining an acceleration of the downhole tool with at least one accelerometer;
determining an instantaneous velocity of the downhole tool with at least an average velocity of the downhole tool and a velocity deviation of the downhole tool, wherein the velocity deviation of the downhole tool is determined based at least on a cost function, wherein the cost function comprises the velocity deviation; and
calculating a depth of the downhole tool with at least the instantaneous velocity.