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:
Jul. 07, 1998
Filed:
Apr. 03, 1996
Robert C Hammett, Garland, TX (US);
James Dan Vick, Jr, Dallas, TX (US);
Halliburton Company, Duncan, OK (US);
Abstract
An improved coiled tubing pulling tool and methods of using the pulling tool for pulling a well tool from a well bore, relocating a well tool in the well bore and performing other similar operations. The pulling tool is basically comprised of an elongated inner mandrel having an axial fluid flow passageway therethrough adapted to be connected to a length of coiled tubing, a latching mandrel connected at the end of the inner mandrel having a fluid flow passageway therethrough and having a fishing nose thereon, a tubular piston member slidably extending over the inner mandrel which is movable by fluid pressure in a direction away from the fishing nose, a first spring disposed between the inner mandrel and the piston member for urging the piston member in a direction towards the fishing nose, a latching device disposed on the latching mandrel connected to the piston member before latching the pulling tool to a fishing neck of a well tool and a releasing system for unlatching the pulling tool when sufficient fluid pressure is applied to the pulling tool to overcome the spring and move the piston member away from the fishing nose.