The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 2025
Filed:
Apr. 21, 2022
Interwell Norway As, Hafrsfjord, NO;
Thomas Hiorth, Trondheim, NO;
Interwell Norway AS, Hafrsfjord, NO;
Abstract
A well tool performs an operation in an oil/gas well. The well tool includes: a mandrel having a longitudinal direction and a radial direction perpendicular to the longitudinal direction; and an anchoring device for longitudinally locking the well tool to a bore including a lock groove. The anchoring device includes: a first ring arranged radially outside the mandrel; a second ring arranged radially outside the mandrel at a longitudinal distance from the first ring and movable in the longitudinal direction relative to the first ring; a spring element being substantially ring-shaped and arranged radially outside the mandrel; and a plurality of locking dogs distributed circumferentially on the spring element and located longitudinally between the first ring and the second ring. The anchoring device has a run state in which the first ring and the second ring are provided at an initial longitudinal distance from each other. The anchoring device has a set state in which the first ring and the second ring are provided at a shorter distance from each other, thereby wedging the locking dogs outwards in the radial direction. The spring element is configured to bias the locking dogs inwards in the radial direction towards the run state of the anchoring device.