Invention Grant
- Patent Title: Multi-tooth jaw, torque stopper device and repair kit thereof for preventing rotation of downhole tools suspended in wellbore casing
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Application No.: US17316805Application Date: 2021-05-11
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Publication No.: US11542762B2Publication Date: 2023-01-03
- Inventor: Edward L. Moore
- Applicant: Excalibre Downhole Tools Ltd.
- Applicant Address: CA Airdrie
- Assignee: Excalibre Downhole Tools Ltd.
- Current Assignee: Excalibre Downhole Tools Ltd.
- Current Assignee Address: CA Airdrie
- Agency: ATMAC Patent Services Ltd.
- Agent Andrew T. MacMillan
- Priority: CA3085090 20200629
- Main IPC: E21B23/00
- IPC: E21B23/00 ; E21B41/00 ; E21B11/00

Abstract:
A multi-tooth jaw for a torque stopper device prevents rotation of downhole tools suspended in a wellbore casing. The jaw includes a base for positioning adjacent an outside wall of the torque stopper and a hinge connection allowing the jaw to pivot around an axis of rotation running lengthwise through the base. The jaw further includes a plurality of radial tips, i.e., teeth, each a different distance from the axis of rotation. When viewed from a side with the axis of rotation being a point around which the jaw pivots, the tips are in ascending order of distance with a first, leading tip having a shortest distance from the axis of rotation as the jaw pivots from a stowed to a deployed position. A torque stopper device with the multi-tooth jaw supports a range of casing internal diameters. A repair kit allows swapping a one-tooth jaw with the multi-tooth jaw.
Public/Granted literature
Information query