US 11,814,958 B2
Downhole tool with tapered actuators
Kjell Haugvaldstad, Vanvikan (NO); and Neil Cannon, Woodland Hills, UT (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Jan. 13, 2023, as Appl. No. 18/154,109.
Application 18/154,109 is a continuation of application No. 17/202,393, filed on Mar. 16, 2021, granted, now 11,566,472.
Application 17/202,393 is a continuation of application No. 16/309,717, granted, now 10,968,703, issued on Apr. 6, 2021, previously published as PCT/US2017/039358, filed on Jun. 27, 2017.
Claims priority of provisional application 62/357,225, filed on Jun. 30, 2016.
Claims priority of provisional application 62/357,215, filed on Jun. 30, 2016.
Prior Publication US 2023/0151695 A1, May 18, 2023
Int. Cl. E21B 7/06 (2006.01); E21B 17/10 (2006.01)
CPC E21B 7/068 (2013.01) [E21B 7/06 (2013.01); E21B 17/1014 (2013.01); E21B 17/1085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A downhole tool, comprising:
a tool body rotatable about a tool axis; and
a selectively extendible actuator coupled to the tool body, the actuator including a working face arranged and designed to contact a downhole formation, the working face including:
a first surface parallel to the tool axis;
a second surface downhole relative to the first surface and slanted radially inwardly from the first surface at a first slant angle; and
a third surface uphole relative to the first surface and slanted radially inwardly from the first surface at a second slant angle that is different than the first slant angle,
wherein the first, second, and third surfaces are oriented relative to each other in a cross-section through a center of the actuator,
wherein in the cross-section, the first surface includes at least first and second materials with different coefficients of friction, and
wherein the second surface includes the second material, and the third surface includes the first material.