Class 166/96.1 - External anchoring or bracing means

Subclass of Class 166 - Wells
Definition: Above ground apparatus comprising a head, cap or enclosure
No. of patents: 32
Last issue date: 08/02/2011

Number	Title	Issue Date
7987904	Sealed well cellar A well cellar system includes a substantially planar base plate, the base defining an aperture sized to receive a conductor pipe. The planar base plate is an integral structural member which, in conjunction with the seal between the base plate and the wall and the r...	08/02/2011
7740061	Externally activated seal system for wellhead A method and apparatus for installing casing hangers in a wellbore utilizing an externally activated gripping system to temporarily bind wearbushings secured to casing and tubing hangers in order to lock-down such hangers during various wellbore drilling activities,...	06/22/2010
7484558	Load bearing support structure for rigs above a wellhead A support structure for a rig above a wellhead, such as a snubbing unit, is provided which directs loads from the rig into the ground to minimize stress on the wellhead components. The support structure generally comprises a support plate to be secured onto a wellhe...	02/03/2009
7428931	Multi-lock adapters for independent screwed wellheads and methods of using same A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange ...	09/30/2008
7416020	Wellhead isolation tool, wellhead assembly incorporating the same, and method of fracturing a well A wellhead assembly is provided including a casing and a tubular member mounted over the casing. A flange extends from the tubular member. A generally elongated annular member is provided in the tubular member. The generally elongated annular member has a first end ...	08/26/2008
7413008	Tool for fluid filling and circulation during oilfield well tubing A tool for use in wells to maintain a tubed pipe filled with drilling fluid supplied by a well and to circulate the fluid through a well-pipe space, the tool facilitating sliding of tubes and producing cementation of the space. The tool can be intercalated with dril...	08/19/2008
7290612	Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore The present invention is directed to an apparatus and method for reverse circulation cementing a casing in an open-hole wellbore. The apparatus includes a surface pack-off device, which has a housing defined by an upper section and lower section. A load bearing plat...	11/06/2007
7267180	Multi-lock adapters for independent screwed wellheads and methods of using same A lockdown flange for use with an independent screwed wellhead includes an annular body having a center passageway with an internal diameter at least as large as a passageway through the wellhead. The lock down flange may be used to construct a multi-lock adapter fo...	09/11/2007
7225871	Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore A system for cementing a casing in an open wellbore having no surface casing, wherein an annulus is defined between the casing and the wellbore, the system having: an annular plug around the casing at the mouth of the wellbore; a cement composition pump fluidly conn...	06/05/2007
7128143	Externally activated seal system for wellhead A method and apparatus for a seal assembly for a unitized wellhead system for land or platform applications utilizes a friction grip technology to create maintainable metal-to-metal seals with finely-controlled contact stresses, lock-down casing and tubing hangers, ...	10/31/2006
7032677	Multi-lock adapters for independent screwed wellheads and methods of using same A lockdown flange for use with an independent screwed wellhead includes an annular body having a center passageway with an internal diameter at least as large as a passageway through the wellhead. The lock down flange may be used to construct a multi-lock adapter fo...	04/25/2006
6920925	Wellhead isolation tool A wellhead isolation tool and a wellhead assembly incorporating such a tool are provided. The wellhead assembly has an annular assembly coupled to a well. The annular assembly may include a casing head coupled to the well and a tubing head mounted over the casing he...	07/26/2005
6915868	Elevator apparatus and method for running well bore tubing An elevator apparatus for manipulating well bore tubing includes a circular body having a top and a central cavity around a body axis. The cavity has a diameter allowing the collar portion of the tubing to pass longitudinally therethrough. A plurality of cavity rest...	07/12/2005
6662868	Clamping well casings A clamp for clamping two concentric tubes, typically two concentric tubes in an oil or gas well. The clamp has two axially movable tapered components which can be pulled over one another in an axial direction to provide a contraction of internal diameter ...	12/16/2003
6508311	Apparatus, system and method for installing and retrieving pipe in a well A string of pipe formed by the connection together of multiple joints of shorter pipe segments is stored in the water space adjacent an offshore drilling rig. The pipe string bends from the drilling rig floor in a semicircular arc and enters the water adj...	01/21/2003
6401811	Tool tie-down A tool tie down system is provided which ties down a well tool inserted into the top end of a casing string being lowered into a well from upward movement caused by pressure forces from below the well tool inside the upper end of the casing string. The sy...	06/11/2002
6276464	Stake coupler for a horizontal directional drill A coupling for quickly and easily attaching and detaching stakes from the drive head of a horizontal directional drill. The coupling includes an upper coupler member and a lower coupler member. The lower coupler member slides into the upper coupler member...	08/21/2001
6092596	Clamping well casings A clamp for clamping two concentric tubes, typically two concentric tubes 2,4 in an oil or gas well. The clamp has two axially movable tapered components 6,7 which can be pulled over one another in an axial direction to provide a contraction of internal d...	07/25/2000
5984025	Drill pipe tong retaining apparatus Apparatus for positively retaining drill pipe tongs at a desired position horizontally displaced from a center of a rig floor. The apparatus includes a latch connected to a removable stand which places the latch at a desired height above the rig floor and...	11/16/1999
5623994	Well head cutting and capping system Systems and methods for cutting a well casing and then capping the cut well casing are provided. A well casing cutting assembly having a tensioned wire cutting element may first be moved into position relative to the well casing and operated so that the c...	04/29/1997
5404832	Wellhead connector A connector for connecting two tubular members (1,2) having annular flanges (3,4) at their ends. The connector comprising an actuating ring (13) movable in the axial direction of the tubular members (1,2), a plurality of upper dogs (15) for engaging the f...	04/11/1995
5205356	Well starter head A connector for connecting a tubular starter head to a casing of a well allows connection without special tools. The tubular head has an annular recess extending upward from its lower end. The connector includes a seal actuating ring and a slips actuating...	04/27/1993
5115861	Tubing guide A tubing guide provides a window for installing or removing equipment on a tubing. The guide has pipe guards which are mounted for swinging movement to and away from support position and provides for easy installation and removal of inserts in the upper a...	05/26/1992
5042601	Triple tool with sliding spider bowl An slip bowl assembly for supporting multiple pipes in a well casing includes at least two bowls which can be moved away from the centerline of the well by remote control, to allow large collars or tools on the pipe to pass through the assembly....	08/27/1991
4993489	Wellhead isolation tool A wellhead isolation tool is presented which includes an expanding nipple operable from outside the wellhead and casing, the nipple and its concentric mandrels being inserted into the wellhead and thus down through the wellhead array and into the casing o...	02/19/1991
4905764	Protective cover assembly for a well casing and a method of protecting a well casing A protective cover assembly for a water well is provided. The cover assembly includes a cover member which covers and completely encloses the above ground projecting end portions of a well casing and an associated electrical conduit. The cover member has ...	03/06/1990
4872508	Oil well pump leakage accumulator An accumulator to be mounted in conjunction with an oil well pump which has a reciprocating polish rod. The polish rod is mounted in conjunction with the stuffing box of the oil well pump. The accumulator is attached to and sealed relative to the ambient ...	10/10/1989
4592422	Casing hanger apparatus and method of installation therefor A hanger apparatus inserted into the earth and from which the drill casing of a well is hung comprising a central sleeve having a plurality of structural arms extending outwardly therefrom, each terminating in a pile sleeve. A plurality of pipe joints, we...	06/03/1986
4469182	Method of installing a casing hanger A hanger apparatus inserted into the earth and from which the drill casing of a well is hung comprising a central sleeve having a plurality of structural arms extending outwardly therefrom, each terminating in a pile sleeve. A plurality of pipe joints, we...	09/04/1984
4467864	Workover rig support apparatus An apparatus for distributing the weight of a workover or maintenance apparatus connected to a Christmas tree over the surface of the portion of the Christmas tree to which the workover apparatus is attached, including a plate which rests upon the portion...	08/28/1984
4456060	Method for pumping a liquid from a well and apparatus for use therein A pumping method, principally for oil, allows the sucker rod to fall under gravity for the first part of the downward stroke, then decelerates the sucker rod to a slow rate of descent, so creating a pause in the sucker rod's motion. Shock-absorbing means ...	06/26/1984
4323118	Apparatus for controlling and preventing oil blowouts Apparatus for controlling and preventing an oil blowout comprising a hollow frustoconical dome which is disposable over the end of a well discharge pipe or an offshore rig discharge pipe. At the top of the hollow dome is an axially disposed main valve for...	04/06/1982

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Class 166/96.1 - External anchoring or bracing means