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6796376 |
Composite bridge plug system
A composite bridge plug system for containing a well bore with reduced drill up time. The composite bridge plug system includes an elongate mandrel, a head member attached to a lower portion of the...
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6793022 |
Spring wire composite corrosion resistant anchoring device
A slip for use in the anchoring device on a well tool has a wedge shaped body and teeth on the exterior of the body. The teeth are formed from a ring segment of spring steel material mounted on and...
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6789623 |
Method and apparatus for open hole gravel packing
The apparatus includes a gravel pack assembly comprising a gravel pack body and a crossover tool. The gravel pack body comprises a pressure set packer, one or more production screens and a...
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6782954 |
Open hole straddle tool
A straddle packer tool comprises a mandrel and a housing. Spaced packers are carried by the housing. A plurality of bypass ports are arranged in the mandrel and housing for aligning in several...
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6779601 |
Inflatable packing element
An inflatable packing element for a bridge plug. The packing element has an anchor portion and a sealing cover portion, each of which is expanded in order to engage and seal a surrounding string of...
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6772844 |
High pressure sealing apparatus and method
A sealing apparatus for sealing an annulus between a mandrel and an outer tubular. The apparatus comprises a top seal ring and a bottom seal ring separated by a double-ramped cylinder, all mounted...
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6769491 |
Anchoring and sealing system for a downhole tool
The present invention generally relates to a method and apparatus for sealing an annulus in a wellbore. In one aspect, the apparatus is an anchoring and sealing system for a downhole tool such as a...
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6761222 |
Packer system
Packers are expandable sealing devices used to seal off zones in a well. Packers are expanded to seal the bore of the well by means of expansion fluid supplied via individual pipelines. However,...
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6752205 |
Inflatable packer with prestressed bladder
An improved inflatable packer 10 is provided having a pre-stretched bladder to minimize Z-folding. An expandable outer body 11 includes an inner elastomeric bladder layer 12 , a reinforcement...
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6752216 |
Expandable packer, and method for seating an expandable packer
The present invention provides an expandable packer, and methods for seating an expandable packer. The apparatus comprises an expandable seating body configure to receive a packer body. The seating...
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6752569 |
Underwater tool
To obviate the need for hydraulic lines, from the surface, external water pressure is used to compress a seal member and form a seal with a surrounding pip. Valve is opened at depth to allow water...
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6745845 |
Isolation of subterranean zones
One or more subterranean zones are isolated from one or more other subterranean zones using a combination of solid tubulars and perforated tubulars.
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6745846 |
Expandable downhole tubing
The present invention relates to portions of casing that are inserted into a wellbore. The casing portions are provided with a protected portion in which a friction and/or sealing material can be...
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6742598 |
Method of expanding a sand screen
Apparatus and methods are provided for expanding an expandable tubular in the wellbore. In one aspect, the expandable tubular is expanded using an inflatable packer. In another aspect, the...
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6742585 |
Sealing off openings through the wall of a well tubular
A device for sealing off an opening through the wall of a well tubular, which device comprises a tubular spacer having an outer diameter allowing the spacer to be arranged in the well tubular, a...
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6736214 |
Running tool and wellbore component assembly
The invention provides a running tool for a wellbore component. In one aspect, the tool includes a body having a longitudinal bore therethrough with an upper end for connection to a tubular run-in...
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6725934 |
Expandable packer isolation system
A completion technique to replace cementing casing, perforating, fracturing, and gravel packing with an open hole completion is disclosed. Each zone to be isolated by the completion assembly...
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6719064 |
Expandable completion system and method
A well completion has an expanded tubing portion and an unexpanded tubing portion. A seal is provided on the unexpanded portion. In another embodiment, an expandable tubing is provided and a gravel...
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6715560 |
Collet-cone slip system for releasably securing well tools
A selectively released well tool anchor has a tubular wicker shoe cage and a tubular setting sleeve in sliding assembly over a tubular mandrel. The wicker shoe cage confines a plurality of...
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6712150 |
Partial coil-in-coil tubing
A dual tubing coiled tubing string, including methods of assembly, that includes an inner tubing sealed within at least an upper portion of an outer tubing.
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6712153 |
Resin impregnated continuous fiber plug with non-metallic element system
A non-metallic element system is provided which can effectively seal or pack-off an annulus under elevated temperatures. The element system can also resist high differential pressures without...
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6695067 |
Wellbore isolation technique
A wellbore isolation device having an expandable component. The expandable component comprises a layer of bistable cells that can be expanded from a contracted stable state towards an expanded...
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6691788 |
Retrievable packer having a positively operated support ring
A retrievable packer ( 50 ) for establishing a sealing and gripping engagement between a tubing string and a well casing ( 34 ) disposed in a wellbore is disclosed. The retrievable packer ( 50 )...
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6672389 |
Bulged single-hinged scored rupture having a non-circular varying depth score line
A unitary, forward buckling rupture disc is provided that is adapted to be mounted in a holder in which the disc is in closing relationship to a tubing string in an oil well and has greatest...
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6668938 |
Cup packer
An improved cup packer for use on wellbore tools is disclosed. The open end of the cup packer bore is filled with an elastomer to prevent the intrusion of sand and debris into the space between the...
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6668932 |
Apparatus and methods for isolating a wellbore junction
A wellbore junction isolation method and associated apparatus provide convenient isolation of a wellbore junction while permitting certain operations to be performed in a main or branch wellbore...
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6666275 |
Bridge plug
A retrievable bridge plug assembly having an internal “pump through” bypass passage and a wedge assembly, slips and seals disposed thereon. A retrieving tool is provided for running, setting,...
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6666276 |
Downhole radial set packer element
A tool for use in a subterranean wellbore seals with a generally cylindrical interior surface of a tubular or another downhole tool. The tool includes a conveyance tubular 16 for positioning the...
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6651749 |
Well tool actuators and method
The present inventions contemplate an improved well tool actuator and method that does not require more expensive downhole equipment and can be utilized with limited actuation pressures. According...
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6651750 |
Shear release packer and method of transferring the load path therein
A shear release packer that includes at least one sealing element, at least one slip, and at least a lower shear nut. In order to release the packer, the lower shear nut is sheared enabling the at...
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6648335 |
Metal-to-metal seal assembly for oil and gas production apparatus
A metal-to-metal seal assembly provides a dynamic seal between a piston and a cylinder. A first seal engages the inner diameter of the piston, while a second seal engages an outer diameter of the...
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6631763 |
Method and system for testing a borehole by the use of a movable plug
A method and a system for testing a borehole in an underground formation by the use of so-called closed chamber testing. When carrying out the method, a test or production pipe ( 5 ) is carried...
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RE38249 |
Rotating blowout preventer and method
The rotatable blowout preventer 10 comprises a stationary outer housing 12 and a rotatable inner housing 38 having a curved surface 42 thereon defining a portion of a sphere. An annular...
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6615921 |
Apparatus and method for remote adjustment of drill string centering to prevent damage to wellhead
A drill bit guide is mounted in a wellhead in place of a wear bushing. The bit guide is capable of guiding strings and tools through the wellhead without damage to the wellhead or string while...
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6615926 |
Annular flow restrictor for electrical submersible pump
A method of pumping well fluid from a well having casing with perforations includes connecting an electrical motor to a lower end of a pump and securing the pump to tubing. A restrictor is mounted...
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6612372 |
Two-stage downhole packer
A two-stage packer and method for sealing an annulus in a wellbore is provided. The packer may be set by a force which will not cause a sealing element to buckle, collapse, or otherwise fail. In...
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6585053 |
Method for creating a polished bore receptacle
A method for creating a seal between two tubulars in a wellbore is provided. In one aspect, the method allows for the top end of a first tubular to be sealingly mated to the bottom end of a second...
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6578638 |
Drillable inflatable packer & methods of use
Methods for reclaiming a borehole extending from an earth surface into the earth, part of which borehole is in a lost circulation zone. The methods include the steps of closing off the borehole to...
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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...
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6575246 |
Method and apparatus for gravel packing with a pressure maintenance tool
A method and apparatus for performing a gravel pack operation includes a bypass mechanism (e.g., a bypass valve) that is actuatable between plural positions. The bypass mechanism is part of a tool...
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6564876 |
Packer
A packer for use inside a casing of a subterranean well includes a resilient element, a housing and a rupture disc. The resilient element is adapted to seal off an annulus of the well when...
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6554076 |
Hydraulically activated selective circulating/reverse circulating packer assembly
The present invention relates to packers adapted to seal an annular space within a wellbore. The packers, for example, may be utilized to circulate or reverse circulate a fluid. In one embodiment,...
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6547011 |
Method and apparatus for controlling fluid flow within wellbore with selectively set and unset packer assembly
Apparatus and corresponding methods are disclosed for controlling fluid flow within a subterranean well. In a described embodiment, a longitudinally spaced apart series of selectively set and unset...
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6547009 |
Low profile static wellhead plug
A plug is provided for use in conjunction with a subterranean well. In a described embodiment, a wellhead plug includes multiple outwardly extendable lugs for engagement with corresponding multiple...
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6536532 |
Lock ring for pipe slip pick-up ring
A selectively released well packer is set between a pair of anchor shoe assemblies. Each assembly comprises a tubular setting sleeve having finger projections meshed with an anchor shoe cage....
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6530428 |
Method and apparatus for in-situ production well testing
An apparatus for in situ borehole testing having a drill string with drill pipe and drill bit. An upper sleeve and lower sleeve are telescopically coupled together. A valve seat is located in an...
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6530433 |
Wellhead with ESP cable pack-off for low pressure applications
A wellhead 10 for use with subterranean wells includes an improved tubing hanger 16 including an improved electric power cable pack-off port 20 that permits positioning an electric...
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6513600 |
Apparatus and method for packing or anchoring an inner tubular within a casing
The present invention provides an apparatus and method for sealing and/or anchoring against the inside surface of an outer tubular. In one embodiment, a radially expandable sleeve has at least one...
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6513601 |
Method for setting a packer in a well bore, and a packer
The invention relates to a method for setting a packer ( 7 ) in a well bore ( 1 ), wherein a production tubing ( 4 ) with a packer ( 7 ) is located in the well bore ( 1 ). Abrading means ( 11 ) of...
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6497291 |
Float valve assembly and method
An improved float valve according to the present invention includes a packer 10 for positioning within a joint of the casing C while at the surface of the well, the packer including a float valve...
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