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:
Mar. 28, 2023
Filed:
Jul. 31, 2019
Ardyne Holdings Limited, Aberdeen, GB;
James Linklater, Aberdeen, GB;
Alan Fairweather, Aberdeen, GB;
George Telfer, Aberdeen, GB;
Michael Wardley, Aberdeen, GB;
ARDYNE HOLDINGS LIMITED, Aberdeen, GB;
Abstract
A single trip casing cutting and pulling assembly which includes a casing spear (), a mud motor () and a casing cutter (), wherein a valve () is located between the casing spear () and the mud motor (). The casing spear is operated by fluid flow from surface and the valve () prevents operation of the casing cutter () until the casing spear () is set and casing cutting is required. A method is described for cutting and pulling casing which does not require any rotation of the drill string to operate any part of the casing cutting and pulling assembly. An embodiment is described which includes retrieving the seal assembly () on the same trip. Further embodiments describe performing an integrity test and a circulation test on the same trip with the option of making further cuts at shallower depths on the same trip until a section of cut casing can be recovered.