US 12,326,055 B2
Methods and apparatus for removing sections of a wellbore wall
Todor Sheiretov, Houston, TX (US); Matthew Dresel, Princeton Junction, NJ (US); and Nathan Landsiedel, Sugar Land, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on May 2, 2024, as Appl. No. 18/653,091.
Application 18/653,091 is a continuation of application No. 17/253,642, abandoned, previously published as PCT/US2019/039682, filed on Jun. 28, 2019.
Claims priority of provisional application 62/867,637, filed on Jun. 27, 2019.
Claims priority of provisional application 62/690,985, filed on Jun. 28, 2018.
Prior Publication US 2024/0271500 A1, Aug. 15, 2024
Int. Cl. E21B 29/00 (2006.01); E21B 10/26 (2006.01); E21B 23/01 (2006.01)
CPC E21B 29/005 (2013.01) [E21B 10/26 (2013.01); E21B 23/01 (2013.01)] 18 Claims
OG exemplary drawing
 
16. A method comprising:
disposing a downhole tool within a casing of a wellbore, the downhole tool comprising a first cutting head and a second cutting head, the first cutting head having a plurality of first cutters, and the second cutting head having a plurality of second cutters;
fastening a first portion of the downhole tool to an interior surface of the casing through an anchor;
operating a linear actuator positioned between the first cutting head and the second cutting head to move the second cutting head relative to the first cutting head in a linear direction along the wellbore, thereby changing a distance between the first cutting head and the second cutting head of the downhole tool;
rotating the first cutting head and the second cutting head about a central axis of the downhole tool;
using one or more actuators to extend the plurality of first cutters of the first cutting head or the plurality of second cutters of the second cutting head into an extended position, wherein the plurality of first cutters includes at least two cutting knives or at least two reamers, wherein the at least two cutting knives or the at least two reamers include profile cutting characteristics; and
forcing the plurality of first cutters into the casing to machine a non-circumferential profile into the interior surface of the casing using the plurality of first cutters.