Class 166/126 - With controllable passage between central chamber and space below packer

Subclass of Class 166 - Wells
Definition: Devices with a controllable passage between a central chamber
No. of patents: 40
Last issue date: 07/27/2010

Number	Title	Issue Date
7762323	Composite cement retainer A downhole plug that can include a body and an element system disposed about the body. The plug can further include a first and second back-up ring member having two or more tapered wedges. The tapered wedges can be at least partially separated by two or more conver...	07/27/2010
7434616	System and method for fluid control in expandable tubing In accordance with the teachings of the present invention, a system and method for forming a seal within tubing is provided. A section of tubing is installed in a borehole. The tubing has an inflatable element disposed along an inner surface of the tubing. The infla...	10/14/2008
7325621	Method and apparatus for ECP element inflation utilizing solid laden fluid mixture An inflatable element utilizing a solid or particulate laden fluid as an expansion media. A fluid component of the solid or particulate laden fluid is exhausted from a defined area of the element to leave substantially only particulate matter therein to maintain the...	02/05/2008
7234522	Apparatus and method for drilling a wellbore with casing and cementing the casing in the wellbore A float system for use in cementing a casing in a wellbore. The wellbore is drilled with a drill bit attached to the casing. The drill bit is removed after the wellbore is drilled. The float system is lowered into the casing after the drill bit is removed. The float...	06/26/2007
7191828	Hydraulically set concentric packer with multiple umbilical bypass through the piston A hydraulically set concentric packer with multiple umbilical bypass through the piston. In a described embodiment, a packer for use in a subterranean well includes a piston which displaces to set the packer in the well, and a line extending through the piston. The ...	03/20/2007
7178603	Method and apparatus for ECP element inflation utilizing solid laden fluid mixture An inflatable element utilizing a solid or particulate laden fluid as an expansion media. A fluid component of the solid or particulate laden fluid is exhausted from a defined area of the element to leave substantially only particulate matter therein to maintain the...	02/20/2007
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
7114558	Filtered actuator port for hydraulically actuated downhole tools Methods of using and making and apparatuses utilizing a filtered actuator port for hydraulically actuated down hole tools. The filtered port prevents sand or other debris from entering the actuator workings of a tool. In accordance with one aspect of the invention, ...	10/03/2006
7059405	Methods of treating subterranean formations using low-molecular-weight fluids The present invention relates to systems and methods useful in subterranean treatment operations. Examples of methods of the present invention include methods for fracturing a portion of a subterranean formation penetrated by a well bore; methods of enhancing produc...	06/13/2006
7055607	Seal assembly for a safety valve Methods and apparatus for sealing a safety valve within a tubular that the safety valve is designed to be landed and set in are disclosed. The valve includes a seal assembly having a seal on the valve that is acted on by a first piston disposed on a first side of th...	06/06/2006
7044221	Apparatus for coupling a tubular member to a preexisting structure An apparatus for coupling a tubular member to a preexisting structure. ...	05/16/2006
6997252	Hydraulic setting tool for packers A hydraulic setting tool for packers capable of mechanically setting the packer and opening a valve in the packer in one trip. The tool comprises an outer sleeve and an inner mandrel coaxially disposed within the outer sleeve and adapted to move axially relative to ...	02/14/2006
6959762	Method and apparatus for formation damage removal A method for evaluating the permeability and formation damage in the porous rock around a well bore. This method relates to the use of a single string coiled tubing and a down hole assembly which includes a microcontroller, an electrically operable fluid control val...	11/01/2005
6915856	Apparatus and methods for preventing axial movement of downhole tool assemblies A slip assembly apparatus is adapted (i) to be deployed into a wellbore (ii) to prevent axial movement of a downhole tool assembly in the wellbore when the slip assembly apparatus is actuated and external forces are imposed on the downhole tool assembly; (iii) to al...	07/12/2005
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
6609567	Tubing hanger with lateral feed-through connection A packer and method for sealing an annulus in a wellbore is provided. In one aspect the packer comprises a body having one or more conduits formed there-through; a chamber disposed within the body, wherein the chamber is in fluid communication with each o...	08/26/2003
5921318	Method and apparatus for treating multiple production zones The method and apparatus for treating multiple production zones includes a completion string having a plurality of sets of tools including a closing sleeve, indicator collar, and production screens with an isolation packer disposed between each adjacent s...	07/13/1999
5890535	Diverter flow line seal A diverter body having an upper portion, a central portion and a lower portion is secured to the upper end of a riser and lands in a housing. The central portion has lateral flow openings that axially align with a lateral flowline outlet in the housing. A...	04/06/1999
5865254	Downhole tubing conveyed valve A downhole valve is disclosed for use in a tubing-conveyed string of tools in a well bore, constructed to be actuated to open under pressure forces by dropping a drop bar from the well surface through the tubing. The valve, deployed in the well in a close...	02/02/1999
5620050	Method for setting hydraulic packers that enable placement of gravel pack in a downhole oil and gas well A hydraulic oil and gas well downhole packer apparatus for use in a well casing below a wellhead and in combination with a coil tubing unit provides a tool body having a longitudinally extending tool bore and an upper end portion that connects to the lowe...	04/15/1997
5579844	Single trip open hole well completion system and method A well completion system which includes a production packer assembly, production tubing sealed to the packer assembly, and an isolation assembly coupled with the packer assembly. The isolation assembly includes an isolation pipe received within a producti...	12/03/1996
5505263	Packer set safety valve for controlling dual fluid flows A packer set safety valve assembly for controlling annular and tubing flows within a subterranean wellbore is disclosed. The packer set safety valve assembly controls the annular and tubing flows through dual flow paths. The assembly includes a means, tha...	04/09/1996
5377749	Apparatus for setting hydraulic packers and for placing a gravel pack in a downhole oil and gas well A hydraulic oil and gas well downhole packer apparatus for use in a well casing below a wellhead and in combination with a coil tubing unit provides a tool body having a longitudinally extending tool bore and an upper end portion that connects to the lowe...	01/03/1995
5174379	Gravel packing and perforating a well in a single trip A new gravel packing system is provided whereby a well may be perforated, gravel packed and placed on production with a single trip of the tool string into the well. The system will include a crossover assembly which has a closure mechanism operatively as...	12/29/1992
5044441	Pack-off well apparatus and method A pack-off tubing hanger is shown for use in a tubing string extending from a well surface location to a downhole location within a well casing. The hanger body includes an external packing element and gripping slips which support the hanger body within t...	09/03/1991
4984631	System and plug for plugging a conduit A system and a plug for plugging a well conduit. The plug includes a lock mandrel and a valve. There is a prong releasably connected in the plug. A running tool is adapted to releasably connect to the plug lock mandrel and prong. After the plug is lowered...	01/15/1991
4915172	Method for completing a non-vertical portion of a subterranean well bore A method and apparatus for effecting the completion of non-vertical, including horizontally disposed, portions of a deviated well bore traversing a production formation. To facilitate the insertion of a gravel packing tool string through the curved portio...	04/10/1990
4856591	Method and apparatus for completing a non-vertical portion of a subterranean well bore A method and apparatus for effecting the completion of non-vertical, including horizontally disposed, portions of a deviated well bore traversing a production formation. To facilitate the insertion of a gravel packing tool string through the curved portio...	08/15/1989
4848459	Apparatus for installing a liner within a well bore A packer setting tool, a packer assembly and an attached liner assembly are lowered into a well bore at a desired depth to fix the liner therein. Cement is pumped down a tubing string, through the packer, the lining, check valves and forced upwardly in th...	07/18/1989
4846272	Downhole shuttle valve for wells A downhole flow testing valve having a tubular housing with a valve and flow tube movable within the housing between an open position where valve ports therein are positioned in registry and a closed position where the valve ports are out of fluid communi...	07/11/1989
4641707	Well apparatus Well apparatus is disclosed in which the bore through a lower tubular body adapted to be packed off and anchored within a well bore is opened and closed by a flapper pivotally mounted on the lower body and spring pressed toward closed position, and a flow...	02/10/1987
4638859	Gravel packer The present invention comprises a retrievable gravel packer for circulation and squeeze type gravel packing. The gravel packer includes a compression-set packer element, a J-slot assembly to releasably maintain the gravel packer in an unset mode, a ratche...	01/27/1987
4638860	Apparatus for blocking communication between well bore intervals In the representative embodiment of the apparatus of the invention disclosed herein, a packer plug is arranged with sealing means for closing off the central bore of the mandrel of a packer that is set in a well bore for selectively isolating upper and lo...	01/27/1987
4635716	Gravel packer The present invention comprises a weight-set single-zone gravel packer which may be retrieved from a gravel screen after gravel packing or, alternatively, left in place attached to the screen as a production packer. The gravel packer includes a compressio...	01/13/1987
4633943	Gravel packer The present invention comprises a retrievable gravel packer for circulation and squeeze type gravel packing. The gravel packer includes a compression-set packer element, a J-slot assembly to releasably maintain the gravel packer in an unset mode, a ratche...	01/06/1987
4627491	Well packer The present invention comprises a mechanically set pack-off device adapted to be run into a wellbore on a tubing or pipe string, the pack-off device including upper and lower slip means, packing element means therebetween, drag block means, J-slot means t...	12/09/1986
4363359	Locking assembly for well devices A locking assembly for well devices, such as a cable suspended electric pump, for anchoring the device against both axial and rotative movement within a well flow conductor. The assembly includes locking keys engageable with locking recesses provided in t...	12/14/1982
4285402	Method and apparatus for stimulating oil well production A system for cleaning perforations in a well bore where the perforations are located below a packer means on a production tubing. A tool on a string of pipe has packer means for sealing off the cross-section of the production tubing and the pressure in th...	08/25/1981
4151875	EZ disposal packer Packer for use in the disposal of abrasive fluids and well debris from a well drilling operation comprising: a packer mandrel; an upper slip support slidable on the packer mandrel; an upper slip wedge installed on the packer mandrel; a first plurality of ...	05/01/1979
4040485	Method of simultaneously setting a packer device and actuating a vent assembly A packer actuated vent assembly comprising a packer device settable by reciprocal movement of a mandrel, a valve actuator in the form of a barrel attached to the packer body, and a mandrel extension having a valve means thereon attached to the packer mand...	08/09/1977

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Class 166/126 - With controllable passage between central chamber and space below packer