Class 166/183 - With controllable bypass outside central conduit

Subclass of Class 166 - Wells
Definition: Devices wherein the packer is adapted to be supported by
No. of patents: 34
Last issue date: 07/01/2008

Number	Title	Issue Date
7392839	Single line sliding sleeve downhole tool assembly A single fluid line sliding sleeve downhole tool assembly having a top sub engaging a top connector which connects to a body that engages a middle connector which is secured to a port housing, wherein the port housing engages a lower connector and the lower connecto...	07/01/2008
7360601	Submersible well pump installation procedure A method of installing an electrical pump assembly in a subsea wellhead member avoids having to run the pump assembly through the wellhead member after removing the wear bushing. The operator first lowers the pump assembly on a string of tubing at least through the ...	04/22/2008
7219743	Method and apparatus to isolate a wellbore during pump workover A system and method for actuating a shut-off valve in a wellbore wherein the shut-off valve element can be positively closed before the pump is removed from the well. A hydraulic actuator component is operably associated with the shut-off valve to provide for select...	05/22/2007
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
7080687	Anti-rotation method and apparatus for limiting rotation of cementing plugs An apparatus for preventing or limiting the rotation of cementing plugs in a casing string during drillout. The apparatus includes an outer housing with a sleeve disposed therein. The sleeve has an inner surface configured to engage cementing plugs received therein ...	07/25/2006
7062960	Blow out preventer testing apparatus The consequences of any failure of a blow out preventer assembly to operate correctly in an emergency can be far reaching. Thus, there is provided an apparatus for registering parameters in the bore of a member which is, in use, connected to a pressurised housing, t...	06/20/2006
7011157	Method and apparatus for cleaning a fractured interval between two packers A method and apparatus for fluid treatment of a selected interval of a well and then cleaning the selected interval and the apparatus of treatment residue. An straddle tool is run into the well to treatment depth on fluid supplying tubing and has upper and lower pac...	03/14/2006
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
6896064	Compression set packer and method of use A downhole packer for providing a seal in a well bore to allow integrity testing of the well bore. The packer is set by a sleeve movable on a body of the packer being set down on a formation in the well bore. Movement of the sleeve compresses one or more packing ele...	05/24/2005
6719046	Apparatus for controlling the annulus of an inner string and casing string A apparatus is disclosed for attaching and sealing to the upper end of the casing allowing the inner string to be run through the apparatus. The apparatus provides a latch for anchoring the inner string and a seal for sealing on the inner string. Also disclosed is a...	04/13/2004
6702015	Method and apparatus for deploying power cable and capillary tube through a wellbore tool A technique to facilitate deployment of power cable and at least one capillary tube through a wellbore tool, such as a packer. The technique allows both the power cable and the at least one capillary tube to extend through a single pass-through opening in...	03/09/2004
6575251	Gravel inflated isolation packer The present invention discloses apparatus and methods for use in wellbores that comprise an inflatable element. The inflatable element is adapted for inflation by gravel. One embodiment of the invention is a method of sealing an annulus in a well that com...	06/10/2003
6431273	Inflatable packer This invention relates to hydraulic anchor packers for use in well bores and, more particularly, to inflatable anchor packers. A hydraulic anchor packer (90) is provided having an inflatable packer element (36) incorporating a cylinder (38) and an elastom...	08/13/2002
6325151	Packer annulus differential pressure valve The invention is a well fluid production valve that is positioned downhole in a closed condition below an upper formation packer. The valve comprises a cylindrical mandrel having central bore flow connection with the upper bore of well fluid production tu...	12/04/2001
6298916	Method and apparatus for controlling fluid flow in conduits A completion string for use in a wellbore includes a main conduit, such as a production tubing, and one or more alternate path conduits, such as shunt tubes, that extend generally in parallel with the main conduit. A flow control device is positioned in e...	10/09/2001
5810083	Retrievable annular safety valve system An annular safety valve system provides a retrievable annular safety valve and packer. In a preferred embodiment, an annular safety valve system has an annular safety valve connected to an upper tubing string extending to the earth's surface. The annular ...	09/22/1998
5396953	Positive circulating valve with retrievable standing valve A positive circulating valve with a retrievable standing valve therein. The valve is used with a packer positioned therebelow. The circulating valve comprises a housing with a mandrel slidably disposed therebetween. A J-slot controls movement between open...	03/14/1995
5297634	Method and apparatus for reducing wellbore-fluid pressure differential forces on a settable wellbore tool in a flowing well An apparatus is provided for use in a wellbore for reducing the effects of pressure differential forces which act on settable wellbore tools suspended therein. The apparatus operates to provide a bypass fluid flow path through the settable wellbore tool f...	03/29/1994
5184677	Pass-through zone isolation packer and process for isolating zones in a multiple-zone well A pass-through zone isolation packer and process for isolating zones in a multiple-zone well. The pass-through zone isolation packer has an upper packer sub with an upper sub through hole and a lower packer sub with a lower sub through hole. A packer mand...	02/09/1993
5029643	Drill pipe bridge plug A retrievable bridge plug apparatus, and associated methods, are provided for sealing the bore of a drill pipe string to control a well that is flowing out of control....	07/09/1991
4693309	Wireline set/tubing retrievable bridge plug A wireline set and tubing retrievable bridge plug. The bridge plug includes a central mandrel portion having a plurality of J-shaped recesses thereon at an upper end and at least one shaped recess at a lower end thereof. Disposed around the central mandre...	09/15/1987
4687055	Wire-line controlled down-hole shut-in tool for wells A wire-line controlled down-hole shut-in tool for wells incorporates a mandrel adapted for connection in a tubing string. A shut-in valve mechanism within the mandrel is opened and maintained in its open position by a sectioned flow tube assembly and is p...	08/18/1987
4648446	Wireline set/tubing retrieve packer type bridge plug A packer type bridge plug for use in wells which may be set upon a wireline and retrieved upon a tubing string. The retrieval of the bridge plug is facilitated by the positive retraction of the upper and lower wedge members from beneath the slips during t...	03/10/1987
4545431	Wireline set/tubing retrieve packer type bridge plug A packer type bridge plug for use in wells which may be set upon a wireline and retrieved upon a tubing string....	10/08/1985
4407363	Subsurface well apparatus There is disclosed a subsurface well completion system comprising body means having a bore therethrough adapted to be connected in axial alignment with a tubing string suspended within a well bore, and a packer carried by the body means for closing off th...	10/04/1983
4289201	Well test apparatus A well test apparatus in which a by-pass sleeve valve lands in a previously set packer. A lock mandrel assembly lands in the sleeve valve and carries a transducer fitting. A transducer is releasably carried in the fitting. Well conditions such as pressure...	09/15/1981
4185690	Backsurge well cleaning tool Apparatus is run on tubing string for pressure surging operations. Fluid is in the annular area between the tubing string and the well bore and fluid is also within the tubing string with a packer separating the annulus fluid from the tubing fluid. A firs...	01/29/1980
4146092	Well packer valve seal assembly A seal assembly for a valve in a mechanical setting retrievable and pressure balanced packer has a valve seal mounted on a bushing mounted around a mandrel joined to an anchor and enclosed within a balance chamber housing. The valve seal is retained betwe...	03/27/1979
4121660	Well pressure test plug A test plug for use in pressure testing a Christmas tree and blowout preventer atop an oil or gas wellhead. The test plug includes a cylindrical body having an outer diameter slightly smaller than the bore of the wellhead, and a plurality of support dogs ...	10/24/1978
4076083	Method and apparatus for controlling a well during drilling operations A method and apparatus for use in controlling a well during drilling operations is disclosed. The method includes actuating a downhole packer and providing for flow in a controlled manner past the packer. The apparatus includes a packer and means for cont...	02/28/1978
4049052	Subsurface annulus safety valve Disclosed is a safety system to control flow within a well which includes an annulus safety valve to control flow in the annulus between concentric well pipe and which may include a tubing safety valve to control flow in the inner pipe....	09/20/1977
4031955	Down hole inhibitor injector Apparatus is provided for affording transmission of liquid or gas inhibitor within and below the bore of a well packer during production of hydrocarbons in a subterranean well....	06/28/1977
4018276	Blowout preventer testing apparatus A blowout preventer test plug for use in pressure testing a blowout preventer, the plug comprising a first body having fluid passage ports positioned therethrough and a second body having fluid passage ports positioned therethrough positioned on a tubular...	04/19/1977

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Class 166/183 - With controllable bypass outside central conduit