Class 294/86.17 - With releasing means

Subclass of Class 294 - Handling: hand and hoist-line implements
Definition: Grapples having a grappling means that engages and holds
No. of patents: 34
Last issue date: 01/10/2012

Number	Title	Issue Date
8091935	Internal release connector and method A tubing connection release system. The system includes, a male connector having a profile at one end thereof and receptive to a tubular at the other end thereof, a female connector receptive to a tubular at one end thereof and receptive to the male connector at the...	01/10/2012
7427091	Spear head overshot for use in a cable guided fishing assembly Disclosed is an improved spear head overshot. The spear head overshot is particularly useful as part of a cable-guided fishing assembly. The spear head overshot essentially comprises one or more pivot lugs, the pivot lugs comprising jaw sections and release point se...	09/23/2008
7172029	Bi-directionally boosting and internal pressure trapping packing element system The present invention is a packer for sealing an annular region in a wellbore. The packer includes a packing element which is held through bidirectional forces. The packer first comprises an inner mandrel. Disposed around the inner mandrel are three tubulars: (1) a ...	02/06/2007
7163066	Gravity valve for a downhole tool A gravity valve for a downhole tool for use in a subterranean well and a method of use thereof. The gravity valve is adapted to control the flow of a dowuhole fluid through the downhole tool. The gravity valve typically includes a plunger and a seat. The plunger may...	01/16/2007
7152674	Disconnect devices A disconnect device for use as part of a tubing string downhole in an oil or gas well and which comprises a tubular body, at least one slip held within the tubular body, and a sleeve housed within the tubular body to hold the at least one slip in coupling engagement...	12/26/2006
7083209	Hydraulic overshot tool without a nozzle, and method of retrieving a cylinder The present invention provides an improved hydraulic overshot tool. The overshot tool mechanically engages a cylindrical body downhole attempting to be retrieved. In the event retrieval is unsuccessful, the overshot tool may be hydraulically released from the cylind...	08/01/2006
6997493	Lockable overshot Lockable overshot (10) includes an elongated body (12), lifting dogs (14a, 14b) and a locking sleeve (16). Ends (18) of the lifting dogs (14) are configured for latching a conventional spearhead point th...	02/14/2006
6902008	Bi-directionally boosting and internal pressure trapping packing element system Present invention is a packer for sealing an annular region in a wellbore. The packer includes a packing element which is held through bi-directional forces. The packer first comprises an inner mandrel. Disposed around the inner mandrel are three tubulars: (1) a top...	06/07/2005
6425615	Overshot tool There are disclosed two embodiments of an overshot tool for use in recovering a fish within a well bore, wherein a radially expandable and contractible grapple having helical tapered outer surfaces is seated upon a bowl within an intermediate portion of a...	07/30/2002
6244642	Retrievable bridge plug and retrieving tool A retrievable bridge plug having an internal bypass passage and external retrieving lugs, and a retrieving tool therefor. When the bypass passage is sealed, both the top and bottom openings of the bypass passage are closed, preventing debris from entering...	06/12/2001
6230797	Flow control device retrieval tool and method A retrieval tool provides enhanced functionality for retrieving an item of equipment from within a tubular string in a subterranean well. In a described embodiment, a retrieval tool includes an anchoring device. The anchoring device releasably secures the...	05/15/2001
6142545	Casing pushdown and rotating tool A pushdown and rotating tool for holding, pushing, and rotating a floated casing string into a wellbore is provided. The tool includes a mandrel, a housing attached about the external diameter of the mandrel and shaped to receive a collared casing, a jaws...	11/07/2000
6095583	Wellbore fishing tools An apparatus for retrieving an object from a wellbore has been invented having an inner body and a longitudinal fluid flow bore therethrough, and at least one lateral flow bore therethrough, the bottom end having an opening suitable for receiving therein ...	08/01/2000
5887925	Combined washover and retrieval device A combined washover and retrieval device (30, 30A) for connection to the lower end of a tubular string (14, 14A) including an outer washover pipe (22, 22A) and an inner retrieval tool (36, 36A). Retrieval tool (36, 36A) includes an upper sub (30, 30A) sec...	03/30/1999
5810410	Combined washover and retrieval device A combined washover and retrieval device (30, 30A) for connection to the lower end of a tubular string (14, 14A) including an outer washover pipe (22, 22A) and an inner retrieval tool (36, 36A). Retrieval tool (36, 36A) includes an upper sub (30, 30A) sec...	09/22/1998
5791712	Spear fishing tool A spear fishing tool for engaging an object to be removed from a well bore, commonly called a "fish". The spear fishing tool is characterized by a cylindrical housing, typically attached to a length of coiled tubing by means of a top sub and fitted with a...	08/11/1998
5775433	Coiled tubing pulling tool 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...	07/07/1998
5639135	Fishing tool and method of operation A fishing spear for retrieving a fish from a wellbore comprises a mandrel fixedly secured to an upper sub, a collet assembly telescopically surrounding the mandrel and a support sleeve telescopically surrounding the mandrel and positioned between the mand...	06/17/1997
5242201	Fishing tool A spear and overshot are provided that use a plurality of collets. The collets are initially displaced by the fish until they are presented against a reduced diameter portion of the apparatus. At that point, the collets are inwardly attracted and the appa...	09/07/1993
5085479	Vertically manipulated ratchet fishing tool A ratcheting fishing tool having a generally cylindrical body connected with and housing a rotary ratcheting device along with an operating shaft axially mounted to reciprocate within the body and also connected to the ratcheting device. A fish grappling ...	02/04/1992
5054832	Fishing tool for retrieving implements from a hole A fishing tool for retrieving broken or lost implements from a drilled hole includes a one-piece body having a bore extending from one end to the other. Oppositely positioned and inwardly directed male keys extend from the inner surface of the bore. The m...	10/08/1991
5054833	Releasable overshot A releasable overshot having independent slips, for retrieval of downhole tools and other equipment, which can be operated with a wireline, tubing, coiled tubing, or drill pipe string....	10/08/1991
5024277	Running tool for use in well bores A running tool and method for the use thereof in locating apparatus in a well bore includes an elongated hollow tool body and outer sleeve encircling the body; a mandrel disposed within the body and sleeve and carrying a collet on the lower end thereof wh...	06/18/1991
4863672	Absorber rod An absorber rod for nuclear reactors with a pile of spherical fuel elements, which is inserted directly into the pile, in order to affect the prevailing neutron flux by absorber material located in an annular gap between two concentric cylindrical rod ele...	09/05/1989
4772056	Static latching arrangement and method A latching assembly for use in latching a cable to and unlatching it from a given object in order to move an object from one location to another is disclosed herein. This assembly includes a weighted sphere mounted to one end of a cable so as to rotate ab...	09/20/1988
4715445	Latch and retrieving assembly A latch and retrieving assembly is shown for use with a well tool having an axial bore which includes an external landing shoulder and an annular latch recess which is spaced below the landing shoulder. The assembly includes a mandrel which is inserted in...	12/29/1987
4706745	Lock-down releasing spear assembly An apparatus for engaging a tubular member with a tension type spear in which the spear is locked to the tubular member so that it is not released when compressive or other non-tension loads are applied to it. The present invention locks the spear to the ...	11/17/1987
4696502	Dual string packer mill A dual string packer is milled by a mill having an annular milling shoe for milling the periphery of the packer and freeing it from the well bore. An axial milling head mills a central hole in the top of the packer before the annular shoe reaches the lock...	09/29/1987
4591197	Wire line running and/or pulling tool These are disclosed three embodiments of a wire line tool for use in running and/or pulling a well tool within a well bore. In each embodiment, latches are carried about a body of the wire line tool and yieldably urged from inner positions, in which their...	05/27/1986
4580826	Retrieval tool A retrieval tool to retrieve loose pipe and the like from a well. A bell-mouth centering device is sent down the hole to center the pipe, and a spear passes through the centering device into the pipe. Gripping devices carried by the spear engage the pipe ...	04/08/1986
4544521	Actuating device for two clusters of control rods movable vertically in one and the same fuel array of the core of a nuclear reactor The invention relates to an actuating device for two clusters of control rods movable vertically in one and the same fuel array of the core of a nuclear reactor. The first cluster, used for running the reactor, is connected to a first actuating rod (2), t...	10/01/1985
4483563	Device for handling an object such as a pipe or pile A device for handling an object such as a pipe comprising a cylindrical member, with four disposed adjacent one another elongate grooves or recesses in the peripheral direction in the surface thereof and extending in upward direction, with the first and l...	11/20/1984
4275786	Apparatus for selectively coupling cables to well tools In the several representative embodiments of selectively-operable well bore apparatus disclosed herein for dependently coupling a well tool to a suspension cable, a collapsible assembly of two or more retaining members is arranged within an enclosed chamb...	06/30/1981
4273372	Apparatus for use in lowering casing strings An apparatus for use in lowering casing strings or other parts from a floating unit to a subsea well which includes an expansion-type casing running tool employing extendible latches that have left-handed threads cut on their exterior for engagement with ...	06/16/1981

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Class 294/86.17 - With releasing means