Class 166/82.1 - Releasable seal or cleaner disengaged by projection on inner member

Subclass of Class 166 - Wells
Definition: Above ground apparatus comprising a detachably connected
No. of patents: 26
Last issue date: 04/22/2008

Number	Title	Issue Date
7360592	Compliant cladding seal/hanger A compliant, integrated, fastening and sealing system located on either end of cladding or on a liner hanger. It features protrusions in opposed directions whose contact edges are preferably hardened. The protrusions penetrate the surrounding tubular on expansion of...	04/22/2008
7316271	Deformable member A deformable member can be used in a well tool for use in downhole oil/gas wells. In one embodiment, a deformable member is described which is deformable between undeformed and deformed positions, and comprises a generally hollow cylindrical body defining a wall. Th...	01/08/2008
6896049	Deformable member A deformable member can be used in a well tool for use in downhole oil/gas wells. In one embodiment, a deformable member (46) is described which is deformable between undeformed and deformed positions, and comprises a generally hollow cylindrical body (48	05/24/2005
6722426	Gasket with multiple sealing surfaces A metal seal for a wellhead assembly has upper and lower legs extending in opposite directions from each other and a rib extending radially outward from a junction of the legs. A first conical band on the upper leg extends uninterrupted from the rib a selected dista...	04/20/2004
6612371	Wellhead system comprising a sliding sleeve seal The present invention is directed to a sealing sleeve which is disposed in a lateral fluid conduit that extends at least partially through a tubing hanger and a surrounding spool and which is slideable between a retracted position for running and retrieva...	09/02/2003
6155358	Wiper device for stripping drilling fluid from rig drill string The wiper device comprises an elongated conveyor arm which can pivot in a horizontal plane and freely move forward and backward through a limited travel (which movement capabilities are collectively termed "floating" capability). The arm carries a wiper p...	12/05/2000
6059052	External pipe wiping apparatus and method of pulling and wiping a pipe string This device is a pipe wiping apparatus. The pipe wiping structure incorporates a housing and the housing is provided with a central opening to enable the housing to be positioned along the pathway of a pipe string. The pipe string is extended upwardly and...	05/09/2000
6024172	Blow-out preventer The invention provides a versatile blow-out preventer having a hydraulically activated bladder and a mechanically operated set of rams mounted in a single body, occupying a minimum of vertical space, and being adapted to operate whether or not there is eq...	02/15/2000
5921316	Automatic drill pipe cleaning system and method of use An automatic pipe wiping system using a circular air manifold with jets which is automatically triggered to flow air at the pipe. The pipe is wiped, even when moving laterally with crooked pipe. The pipe is air blown to wipe the mud down. The air jets hav...	07/13/1999
5509477	Borehole ventilation sealcover A simple bore hole plug for either temporarily or permanently sealing mine bore holes and ventilating shafts or the like is described. A plurality of used motor vehicle tires are arranged one upon the other coaxially in increasing order of diameter. Steel...	04/23/1996
5323854	Tubing hanger seal for water wells A water well installation includes a seal to prevent animals, insects, roots, dirt, dust or other debris from entering the well through the annulus between the casing and tubing strings. The seal comprises a flat, resilient hard rubber disc having a centr...	06/28/1994
5305839	Turbine pump ring for drilling heads A drilling head for the controlled operation of the drill string while diverting well fluids from the well. The drilling head incorporates a kelly drive and at least one stripper rubber which rotate with the drill string extending through the drilling hea...	04/26/1994
5101896	Pipe wiper and washer system What is provided is a system for washing and cleaning sections of drill pipe being tripped out of the hole, and the system including a cylindrical housing having a central opening therethrough, the cover sections movable between open and closed positions ...	04/07/1992
4981174	Leakproof stuffing box with external lubrication for polish rod A stuffing box for an oil well pump which utilizes a separate lubricating fluid chamber for the polish rod rather than using the crude oil that is being pumped as the lubricating fluid....	01/01/1991
4971148	Flow diverter There are disclosed several embodiments of a flow diverter each of which includes a housing installed beneath the floor of a drilling rig on the upper end of a conductor pipe through which a well is to be drilled, a thrust plate sealably supported within ...	11/20/1990
4923005	System for handling reeled tubing A system for handling reeled tubing including a guide, a shear for cutting the tubing, and a tubing injector including upper and lower strippers and guides and an enclosure for the injector. The enclosure in one form excludes sea water in an open bottomed...	05/08/1990
4895205	Pipe washer and chemical applicator system A system for washing, cleaning, and chemically treating sections of drill pipe being tripped out of the hole, which includes an elongated cylindrical housing having a central opening therethrough, the housing comprised of a first and second semi-circular ...	01/23/1990
4860826	Apparatus for sealing a tubing string in a high pressure wellbore Method and apparatus for hanging and sealing a tubing string in a high pressure wellbore. The invention discloses apparatus which enables the pulling of a tubing string on an injection well to be achieved without having to kill or bleed down the formation...	08/29/1989
4716962	Stripping gland A stripping gland is specially designed to act on uneven surfaced leads or the like making up a bundle that extends down into a well. It includes plural interior annular grooves which accommodate flexible seals. It also has an upper cylindrical chamber th...	01/05/1988
4690213	Pneumatic pipe wiper system Disclosed is a pipe wiper device and system for stripping fluid from the external surface of tubular articles being pulled from the wellhead of a well. The wiper device includes a container having a carriage movably mounted therein. A pair of wiper pad as...	09/01/1987
4552213	Wellhead apparatus There are disclosed several alternate embodiments of wellhead apparatus of the type in which hydraulic fluid may be transmitted to and/or from a subsurface safety valve or other hydraulically operable device within the well through an annular space formed...	11/12/1985
4440232	Well pressure compensation for blowout preventers A method and apparatus of compensating for the closing force on a blowout preventer caused by well pressure for reducing the wear on the blowout preventer sealing element when moving a drill string through a closed blowout preventer. A hydraulic opening f...	04/03/1984
4398599	Rotating blowout preventor with adaptor A rotating blowout preventor apparatus includes an adaptor located at the upper end of a main body, and a rotating head assembly which is removably received by the adaptor. The adaptor is longitudinally split to provide two segmented circles which are hin...	08/16/1983
4362210	Friction hold wear bushing A wear bushing for use in the drilling of oil and gas wells is disclosed for the protection of the casing being drilled within against damage by drill string members. Novel means are disclosed for the positioning and mounting of the wear bushing with the ...	12/07/1982
4307783	Method and apparatus for conducting wireline operations during blowout conditions in oil and gas wells A method and apparatus for conducting wireline operations in oil and gas wells under blowout conditions is disclosed, wherein a releasable annular wireline blowout preventer is provided, whereby wireline operations may be conducted under normal operating ...	12/29/1981
4162704	Pressure control device A pressure control device is disclosed which forms a pressure containing enclosure around a tubing string coupling to contain therein any released pressure as the tubing is uncoupled. Means are provided to form a pressure seal against the outside surface ...	07/31/1979

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Class 166/82.1 - Releasable seal or cleaner disengaged by projection on inner member