US 11,982,175 B2
Workflow and visualization for localization of concentric pipe collars
Burkay Donderici, Pittsford, NY (US); and Ilker R. Capoglu, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Oct. 26, 2022, as Appl. No. 17/974,159.
Application 17/974,159 is a division of application No. 16/334,671, granted, now 11,525,349, previously published as PCT/US2018/042895, filed on Jul. 19, 2018.
Claims priority of provisional application 62/542,385, filed on Aug. 8, 2017.
Prior Publication US 2023/0079375 A1, Mar. 16, 2023
Int. Cl. E21B 47/002 (2012.01); E21B 47/092 (2012.01); E21B 47/13 (2012.01); G01N 27/90 (2021.01); G01V 3/10 (2006.01); G01V 3/28 (2006.01); G01V 3/30 (2006.01)
CPC E21B 47/002 (2020.05) [E21B 47/092 (2020.05); E21B 47/13 (2020.05); G01N 27/9073 (2013.01); G01V 3/10 (2013.01); G01V 3/28 (2013.01); G01V 3/30 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for visualizing data to detect a collar comprising:
disposing an electromagnetic logging tool downhole, wherein the electromagnetic logging tool comprises:
a transmitter; and
a receiver;
emitting an electromagnetic field from the transmitter;
energizing a casing with the electromagnetic field to produce an eddy current;
recording the eddy current from the casing with the receiver;
creating a variable-density-log from the recorded eddy current;
selecting a wrapping period for the variable-density-log;
creating a wrapped-variable-density-log from the variable-density-log using the wrapping period;
determining at least one collar location and a pipe index with the wrapped-variable-density-log;
selecting at least one pipe for a collar signature removal;
calculating an ideal signature for the pipes selected for the collar signature removal;
subtracting the ideal signature for the pipes selected for the collar signature removal from the existing pick positions in the wrapped-variable-density-log, to obtain a collar removed wrapped-variable-density-log; and
using the collar removed wrapped-variable-density-log to determine a second collar location and a second pipe index.