公开(公告)号：US11828108B2

公开(公告)日：2023-11-28

申请号：US16069689

申请日：2017-01-11

Applicant: Schlumberger Technology Corporation

Inventor： Ronald B. Crockett ,  Dwain Norris ,  Aaron Madsen ,  Neil Cannon ,  John Daniel Belnap

IPC: E21B10/567 ,  E21C35/183 ,  E01C23/088

CPC classification number: E21B10/5673 ,  E21C35/183 ,  E01C23/088 ,  E21C35/1837

Abstract: A cutting element includes a substrate that is axially symmetric about a central axis. The substrate has a radius perpendicular to the central axis and that extends from the central axis to an outer surface of the substrate. A super-hard material is coupled to the substrate, and the central axis passes through the super-hard material. The super-hard material has an external surface defining at least one ridge protruding from a remainder of the external surface. A central point on the central axis is offset from the external surface of the super-hard material by a distance equal to the radius of the substrate. A distance measured from the external surface of the super-hard material to the central point is greatest at a position between 25° and 45° from the central axis of the substrate.

公开(公告)号：US20210198949A1

公开(公告)日：2021-07-01

申请号：US17202393

申请日：2021-03-16

Applicant: Schlumberger Technology Corporation

Inventor： Kjell Haugvaldstad ,  Neil Cannon

IPC: E21B7/06 ,  E21B17/10

Abstract: A downhole tool includes a tool body and an actuator coupled to and selectively extendible relative to the tool body. The actuator has a working face that contacts a downhole formation, and which includes an upper portion and a lower portion. The lower portion has a tapered surface that is directed radially inwardly and axially downwardly relative to the first portion, with at least a portion of the tapered surface including an ultrahard material having a different coefficient of friction as compared to a first material of the upper portion.

公开(公告)号：US10968703B2

公开(公告)日：2021-04-06

申请号：US16309717

申请日：2017-06-27

Applicant: Schlumberger Technology Corporation

Inventor： Kjell Haugvaldstad ,  Neil Cannon

IPC: E21B7/06 ,  E21B17/10

Abstract: An actuator for use in a directional steering assembly includes an ultrahard insert positioned on a working face. The ultrahard insert is positioned along at least a portion of the perimeter of the working face. The ultrahard insert has a coefficient of friction less than a material of the remainder of the working face.

公开(公告)号：US20160320516A1

公开(公告)日：2016-11-03

申请号：US14699053

申请日：2015-04-29

Applicant: Schlumberger Technology Corporation

Inventor： Brian O. Clark ,  Jacques Orban ,  Jonathan D. Marshall ,  Scott R. Woolston ,  Daniel Hendricks ,  Neil Cannon

IPC: G01V3/20 ,  G01R3/00

CPC classification number: G01V3/24 ,  G01R3/00

Abstract: Devices and methods for well logging using a wear resistant electrode are provided. A downhole device may include a drill bit, a gauge pad mounted on the drill bit, and a first electrode mounted in the gauge pad. An insulating polycrystalline diamond (PCD) material may surround at least a portion of the first electrode. Additionally, the first electrode may include an electrically conductive wear resistant contact point that maintains constant contact with a wall of a wellbore. Additionally, the first electrode may measure an impedance of a geological formation during a drilling operation.

Abstract translation: 提供了使用耐磨电极进行测井的装置和方法。 井下装置可以包括钻头，安装在钻头上的量规垫和安装在量板中的第一电极。 绝缘多晶金刚石（PCD）材料可围绕第一电极的至少一部分。 另外，第一电极可以包括与井筒的壁保持恒定接触的导电耐磨接触点。 此外，第一电极可以在钻井操作期间测量地质构造的阻抗。