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Class / Patent application numberDescriptionNumber of patent applications / Date published
166244100 PROCESSES 5523
166335000 SUBMERGED WELL 679
166750110 ABOVE GROUND APPARATUS 245
166179000 PACKERS OR PLUGS 222
166316000 VALVES, CLOSURES OR CHANGEABLE RESTRICTORS 207
166650100 WITH ELECTRICAL MEANS 125
166206000 EXPANSIBLE ANCHOR OR CASING 82
166055000 MEANS FOR PERFORATING, WEAKENING, BENDING OR SEPARATING PIPE AT AN UNPREPARED POINT 62
166105000 WITH EDUCTION PUMP OR PLUNGER 56
166227000 SCREENS 53
166241100 GUIDE FOR DEVICE OR CONDUIT 53
166067000 WITH BELOW AND ABOVE GROUND MODIFICATION 49
166242100 CONDUIT WALL OR SPECIFIC CONDUIT END STRUCTURE 47
166057000 WITH HEATING, REFRIGERATING OR HEAT INSULATING MEANS 43
166053000 AUTOMATIC 27
166170000 BRUSHING, SCRAPING, CUTTING OR PUNCHING-TYPE CLEANERS 26
166177500 HYDRAULIC FRACTURING DEVICE 16
166178000 WITH JAR MEANS FOR RELEASING STUCK PART 15
166117500 MEANS FOR GUIDING INSERTABLE ELEMENT LATERALLY OF WELL AXIS (E.G., WHIPSTOCK) 15
166222000 WHIRLING OR LATERAL DISCHARGE OR PROJECTABLE NOZZLES 15
166050000 WELLS WITH LATERAL CONDUITS 12
166099000 WITH JUNK RETRIEVING MEANS 12
166051000 MEANS FOR FORMING FILTER BEDS (E.G., GRAVEL PLACING) 11
166101000 PACKER OR PLUG AND PUMP OR PLUNGER MEANS EXERTING OUTWARD PRESSURE 10
166162000 RECEPTACLES 10
166237000 DETENTS OR CLUTCHES 8
166205000 SCREEN WITH VALVE, CLOSURE, CHANGEABLE RESTRICTOR OR PORTION REMOVABLE IN WELL 8
166153000 PISTONS, FLUID DRIVEN INTO WELL (E.G., CEMENTING PLUGS) 7
166063000 WITH EXPLOSIVE OR GAS GENERATING MEANS IN WELL 6
166113000 COMBINED (E.G., WITH NON-ELECTRICAL INDICATING) 6
166177600 VIBRATOR 5
20130043021Subterranean Vibrator with Lateral Vibration Feature - A vibratory tool for use in a tubular string to prevent sticking or to release a stuck string features a fluid operated dart valve working in conjunction with an impact sleeve to deliver continuous axial jarring blows in opposed directions as long as flow is maintained. Movement of one of those components axially in opposed directions opens and closes access to opposed lateral ports so that a lateral vibration is also established as flow cyclically occurs and stops sequentially at opposed lateral outlets.02-21-2013
20130160991Propulsion Generator and Method - A propulsion generator which employs one or more unbalanced rotors, such as a fly wheels or other unbalance rotating members, which can be connected at a lower portion of a downhole coiled tubing string or other downhole tubular string for inducing propulsion of the coiled tubing. The unbalanced rotors may, in one embodiment, be oriented at different positions with respect to each other. The instantaneous fluid flow through the propulsion generator is substantially equivalent to the average fluid flow rate through the tool to provide relatively consistent fluid flow to downhole motors below the propulsion generator for operating the drill bit and/or cutters.06-27-2013
20120160476VIBRATION TOOL - A downhole vibration tool for connection with a pipe string, including a housing, a sleeve contained within the housing, a sleeve bore defined by the sleeve, an annular bore defined between the sleeve and the housing, an unbalanced annular turbine rotatably contained within the annular bore, an inlet for introducing a fluid into the sleeve bore and the annular bore, and an outlet for discharging the fluid from the sleeve bore and the annular bore.06-28-2012
20100139912Drill String Suspension - Vertical and/or directional drilling apparatus where compliant support air bag, magnetic or the like) is provided for a vibrational head and drive assembly that carries the drill string. With the vibrational head having a shuttle from which vibration is not directly taken and with the compliant support allowing pull back in the directional mode several advantages arise.06-10-2010
20130168080RADIAL VIBRATIONAL APPARATUS - A downhole assembly able to generate a vibrational output reliant upon a fluid feed drive to cause relative rotation extending magnetic arrays and thereby a relative longitudinal vibration causing reciprocation.07-04-2013
166177400 CEMENTING DEVICE 5
20100044027ARRANGEMENT AND METHOD FOR SENDING AND/OR SEALING CEMENT AT A LINER HANGER - An apparatus for verifying cement arrival at a target location including a liner and a sensory structure radially outwardly disposed of the liner at a target arrival location of cement from a cementing operation; the sensory structure capable of sensing arrival of cement. A method for verifying completion of a cementing operation. A method for addressing micro annulus formation in a downhole cementing operation02-25-2010
20090151929Method and Device for Cementing a Well or a Pipe - This method consists in introducing within the well or pipe (C) a mandrel (06-18-2009
20100243236NANOPARTICLE-DENSIFIED NEWTONIAN FLUIDS FOR USE AS CEMENTATION SPACER FLUIDS AND COMPLETION SPACER FLUIDS IN OIL AND GAS WELLS - The present invention is directed to methods for densifying cement spacer fluids for use in conjunction with drilling fluids and cement slurries for cementing operations involving oil and gas wells, wherein such densifying is done via the addition of nanoparticles to the spacer fluid. The present invention is also directed to analogous methods of densifying completion spacer fluids using nanoparticles, to Newtonian fluid compositions resulting from any such fluid densification, and to systems for implementing the use of such compositions in well cementing operations.09-30-2010
20110048697SONICALLY ACTIVATING SETTABLE COMPOSITIONS - The present disclosure is directed to a system and method for sonically activating cement slurries. In some implementations, a composition for treating a subterranean formation includes a settable composition and an activator. The activator is released in response to a sonic signal to initiate setting of the settable composition.03-03-2011
20080251249Safety cement plug launch system - A system and method for using a pneumatic line to automate the launch a cement plug from a cement head. The pneumatic line is in communication with the valves and retaining devices normally found on a typical cement head. The system ensures that the proper sequence of opening and closing valves in combination with the removal of the retaining device is used to safely launch a cement plug from the cement head. The pressure in the single pneumatic line may be varied to launch multiple cement plugs from a cement head. The system may be used to remotely launch a cement plug from a cement head. A wireless remote may be used to regulate the pressure in the pneumatic line to launch cement plugs from the cement head as desired.10-16-2008
166098000 GRAPPLE AND WELL ANCHORED LIFTING MEANS 4
20110186286One Trip Retrieval of a Multi-zone Fracturing System - A completion assembly of a top packer and zone isolation packers separated by screens has a disconnect in a selected zone to be fractured or gravel packed that is armed before such a procedure starts. Initially when the assembly of the outer completion and the inner string are properly located and all the screens valved off, all the packers are pressure set and the packer set release device associated with each packer is armed. Before starting a fracturing or gravel packing operation from a given zone isolation packer, a disconnect for that zone packer is armed so that if the inner string sticks in that packer, the inner string is sheared and removed and another trip is used to grab the top packer and pick up. Such picking up releases all the packers down to the one armed disconnect. The disconnect releases bringing up the remnant of the inner string stuck in the packer just above the actuated disconnect.08-04-2011
20090095466Downhole Force Generator - A well tool for applying a pulling or a pushing force to an object in an interior of a well bore comprising: a) an inner member comprising a first elongated member, a second elongated member and an actuation means axially interconnecting the first elongated member and the second elongated member; b) an outer elongated member longitudinally moveably engaged with the inner member; c) a first seal defined between the first elongated member and the outer elongated member, d) a second seal defined between the second elongated member and the outer elongated member; e) a first piston area defined at a first end portion of the outer elongated member between an outer diameter of the outer elongated member and a sealed outer diameter of the first elongated member, f) a second piston area defined at a second end portion of the outer elongated member between the outer diameter of the outer elongated member and a sealed outer diameter of the second elongated member, and g) a sealed chamber defined between the first seal and the second seal, the sealed chamber including a fluid at a fluid pressure; wherein operation of the actuation means axially reversibly moves the outer elongated member relative the inner member while the fluid pressure remains constant; and wherein the first piston area and the second piston area are substantially equal and external pressure acting on these two piston areas, generates two opposing forces substantially balanced during relative movement.04-16-2009
20120305235Tool for installing units in a well - The present invention relates to a tool for installation of units in connection with oil wells, comprising a housing (12-06-2012
20120261113Cobble/small boulder debris device in borehole excavating - A cobble and small boulder debris removal device including a quiescently open 3 prong claw, and a series of springs and cables within or affixed to a shaft to close the prongs in gripping and holding such cobbles when encountered in the pre-clearance of a borehole, to be then removed by being lifted away and released via a relaxation of a lever connected with a main actuating cable.10-18-2012
166052000 PLURAL WELLS 4
20090090499WELL SYSTEM AND METHOD FOR CONTROLLING THE PRODUCTION OF FLUIDS - Embodiments of the present invention allow the placement of a stand alone device (valve) along a flow path, without a physical connection to the surface or reliance on the borehole for signaling, to provide a means to control the flow between reservoirs. This is achieved using a valve located in the flow path that can be actuated without sending signals down the borehole or well path and thereby eliminating the need for complicated signal lines and or fluid columns to actuate the valve.04-09-2009
20090188661GRAVITY DRAINAGE APPARATUS - A hydrocarbon production apparatus comprises an injection well, perforated casing, hydrocarbon viscosity reducing fluid injection tubing, a first wellbore restrictor, and a production well. The injection well is bored above the production well within a hydrocarbon reservoir below a ground surface. The injection well comprises a heel end and a toe end. The perforated casing is positioned along a length of the injection well. The hydrocarbon viscosity reducing fluid injection tubing is disposed within the injection well and has a hydrocarbon viscosity reducing fluid injection end. The first wellbore restrictor is transversely disposed within the perforated casing to control hydrocarbon viscosity reducing fluid flow along the injection well, the first wellbore restrictor being spaced closer to the toe end of the injection well than the hydrocarbon viscosity reducing fluid injection end of the hydrocarbon viscosity reducing fluid injection tubing is to the toe end. The first wellbore restrictor is movable through the injection well under control from the ground surface. This apparatus allows the propagation of, for example, the steam chamber in a steam assisted gravity drainage operation to be precisely controllable and adjustable, in order to more efficiently produce hydrocarbons from the hydrocarbon reservoir.07-30-2009
20100155048INTEGRATED CARBON MANAGEMENT SYSTEM FOR PETROLEUM REFINING - An environmentally and economically more efficient petroleum production/refining/utilization system for managing carbon emissions at all stages of the petroleum lifecycle is provided. The system of the current invention integrates the release of carbon from refined low value, high polluting petroleum products such that those sources of carbon may be utilized in a manner beneficial to the efficiency and environmental footprint of the overall petroleum processing lifecycle.06-24-2010
20100300672Time and efficiency manifold - A manifold for connecting one or more well service or completion apparatuses to a plurality of hydrocarbon wells comprises a block member which includes a flow bore having an inlet branch and a number of outlet branches, an inlet cross which is connected to the block member over the inlet branch, the inlet cross comprising an outlet bore which is in fluid communication with the inlet branch and a number of inlet bores which are in fluid communication with the outlet bore, a number of valves, each of which is connected to the bock member in fluid communication with a corresponding outlet branch, and a number of outlet crosses, each of which is connected to a corresponding valve. Each outlet cross comprises an inlet passage which is in fluid communication with the valve and plurality of outlet passages which are in fluid communication with the inlet passage. Accordingly, one or more fluids may be communicated simultaneously into the flow passage through the inlet bores in the inlet cross, and the fluids may be selectively communicated simultaneously through all of the outlet passages of a corresponding outlet cross by operation of its corresponding valve.12-02-2010
166056000 SCREEN AND OUTSIDE CLEANING PIPE 4
20100101773Methods of Cleaning Sand Control Screens and Gravel Packs - Methods for remediating a subterranean environment. Methods comprising introducing a cleanup fluid through a well bore and into a portion of a subterranean formation penetrated by the well bore, applying a pressure pulse to the cleanup fluid, and introducing a consolidating agent through the well bore and into the portion of the subterranean formation. Methods of cleaning a sand control screen comprises introducing a cleanup fluid through a sand control screen and into a portion of a subterranean formation, the sand control screen located in a well bore that penetrates the subterranean formation; applying a pressure pulse to the cleanup fluid; and introducing a consolidating agent through the sand control screen and into the portion of the subterranean formation.04-29-2010
20090078403WELL SCREEN - A screen assembly connected about a perforated base pipe includes a filter layer constructed of layers of woven metal cloth sintered together; a drainage layer positioned between the base pipe and the filter layer, the drainage layer sintered to the filter layer; and a support layer constructed of woven metal rods and metal cable disposed about the filter layer, the support layer sintered to the filter layer.03-26-2009
20110073296SYSTEM AND APPARATUS FOR WELL SCREENING INCLUDING A FOAM LAYER - An apparatus for screening earth formation components includes: a base pipe configured to allow the passage of formation fluid therethrough; and a foam layer disposed radially outwardly of the base pipe and configured to allow the passage of formation fluid therethrough and minimize the passage of formation solids therethrough, the foam layer including a plurality of hollow structures forming windows therebetween. A method of manufacturing an apparatus for screening earth formation components is also disclosed.03-31-2011
20080196879Mechanically coupled screen and method - A particulate exculder tool includes a basepipe having one or more retention features; a screen jacket disposed radially outwardly of the basepipe; one or more end housings at the screen jacket; and a deformable element disposed between a portion of the one or more end housings and one or of the one or more retention features and method.08-21-2008
166177300 WIPER 3
20110139436TEMPERATURE CONDITIONED STUFFING BOX WITH FLUID CONTAINMENT - A temperature conditioned stuffing box includes a housing having an outer surface, an inner surface defining a packing-receiving bore, a lower surface for attaching to a wellhead and an upper surface. A flow passage through the housing for passing temperature-conditioned fluid through the housing has an input and an output.06-16-2011
20090242191Telescoping Wiper Plug - A wiper plug has a telescoping feature to allow it to be shorter while in a lubricator so as to reduce lubricator length as compared to an extended length for proper propulsion past off center openings such as side pocket mandrels in the string. The wiper has a telescoping feature that allows it to extend when dropping or being pumped from a lubricator. Once extended, it can lock in the extended position so that it doesn't collapse on the way down the string. Centralizers can optionally be used between an upper and a lower wiping section.10-01-2009
20090078406Method of Generating a Non-Plugging Hydrate Slurry - Method for reducing loss of flow due to hydrate solids deposits and wax deposition in a pipeline without the aid of chemicals and system for transporting a flow of wellstream hydrocarbons containing water, using a main pipeline and a cold-flow reactor connected to the main pipeline or within or forming a part of the pipeline, wherein at least a portion of the wellstream is fed to the cold-flow reactor. Also provided is a method for preventing hydrate nucleation and growth in a pipeline and preventing hydrate agglomeration as well as for preventing wax deposition. The provided method eliminates the use of energized equipment for melting, grinding or scraping hydrate solids from inside of pipelines or flowlines. Generating dry hydrates to be mixed with main flow of a wellstream is also described.03-26-2009
166177700 AGITATOR 3
20120292015Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods - A vortex-controlled variable flow resistance device ideal for use in a backpressure tool for advancing drill string in extended reach downhole operations, especially in horizontal wells. The shape, frequency and duration of the pressure waves generated by the device are controlled by the growth and decay of vortices in the vortex chamber(s) of a flow path. The flow path includes a switch, such as a bi-stable fluidic switch, for reversing the direction of the flow in the vortex chamber. The flow path may include multiple vortex chambers, and the device may include multiple flow paths, through which flow may be parallel or sequential. This device generates backpressures of short duration and slower frequencies approaching the resonant frequency of the drill string, which maximizes axial motion in the drill sting and weight on the bit. Additionally, fluid pulses produced by the tool enhance debris removal ahead of the bit.11-22-2012
20120292016Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods - A vortex-controlled variable flow resistance device ideal for use in a backpressure tool for advancing drill string in extended reach downhole operations. The characteristics of the pressure waves generated by the device are controlled by the growth and decay of vortices in the vortex chamber(s) of a flow path. The flow path includes a switch, such as a bi-stable fluidic switch, for reversing the direction of the flow in the vortex chamber. The flow path may include multiple vortex chambers, and the device may include multiple flow paths. A hardened insert in the outlet of the vortex chamber resists erosion. This device generates backpressures of short duration and slower frequencies approaching the resonant frequency of the drill string, which maximizes axial motion in the drill sting and weight on the bit. Additionally, fluid pulses produced by the tool enhance debris removal ahead of the bit.11-22-2012
20100132937Laminar Flow Tool - A laminar flow tool is for channeling water, air or other fluids through a down drill pipe or tubing for pressurization of other tools or other purposes. The tool provides a flow divider having an 180 degree twist separating a driven fluid chamber from a buffer fluid pocket. Fluid in the tool is calmed as it travels and loses some of the spin (“turbulence”) inherent in the water or other fluid. A buffer pocket on one side absorbs shocks and stabilizes the driven side. Ports in the buffer side help equalize pressure.06-03-2010
166540100 WITH MEANS FOR SEPARATELY PUMPING FROM PLURAL SOURCES IN WELL 3
20100132933METHANE HYDRATE DISSOCIATION ACCELERATING AND METHANE GAS DERIVING SYSTEM - It is an object of the present invention to provide a deriving technique with economy and technical difficulty improved without depending on fuel consumption for a heat source when methane gas is derived from a methane hydrate layer. Warm water is pumped up by a pump from an underground aquifer present 1000 to 1500 m below the seabed, geothermal energy is caused to flow through a permeable layer below a methane hydrate layer, a dissociation boundary surface of an un-dissociated area of the methane hydrate layer is dissociated to generate methane gas, the methane gas is led into a production well from peripheral areas and through a gas inlet screen and caused to rise so that the methane gas is collected on the sea.06-03-2010
20110132593SYSTEM, APPARATUS, AND METHOD FOR PRODUCING A MULTIPLE ZONES WELL - The present invention relates to a system, apparatus, and method provided to selectively produce petroleum fluid from multiple production zones well. The apparatus comprises a casing running downwardly into the well and a tubing string running in the casing. The upper and lower sealing mechanisms are provided for sealing the annular space between the casing and the tubing string, therefore, dividing the well into upper and lower production zones. Moreover, the invention comprises a bypass gaslift system provided with a tubular member, tubing string, connecting means and side pocket mandrels for injecting lifting gas into the multiple production zones well. The system and apparatus according to this invention can selectively operate to simultaneously or separately produce petroleum fluid from vertical apart multiple zones well.06-09-2011
20100230089DOWNHOLE SYSTEM AND AN IMMERSION HYDRAULIC MACHINE FOR EXTRACTION OF FLUIDS - The claimed invention relates to the downhole systems for extracting various fluids, in particular—for simultaneous extraction out of a number of producing formations. The inventive downhole system comprises a casing pipe and a tubing extending through said casing pipe, between which pipe and tubing formed are separate isolated cavities. Each one of which cavities communicates, via perforations, with a respective producing formation. In each one of the isolated cavities, to the tubing coupled is a hydraulic machine comprised by a motor and pump. The hydraulic machines in different isolated cavities being adapted to be adjusted independently. This system permits simultaneous extraction of fluids out of different producing formations, with independent controlling of such extraction in various formations. The claimed invention also relates to an immersion hydraulic machine used for extracting fluids.09-16-2010
166115000 CENTRAL CHAMBER SEALED WITH RESPECT TO PREPOSITIONED MODIFIED SURROUNDING CONDUIT 3
20090242187HYDRAULICALLY OPENABLE PORTED SUB - A ported sub comprising: a tubular body including a wall and ends formed for installation in a wellbore tubular string; a first port through the wall; a second port through the wall; a first hydraulically openable sliding sleeve for the controlling the open and closed condition of the first port; a second hydraulically openable sliding sleeve for the controlling the open and closed condition of the second port; a first pressure release connection for securing the first hydraulically openable sliding sleeve in a position on the tubular body and being releasable by application of a selected hydraulic pressure to the first hydraulically openable sliding sleeve; and a second pressure release connection for securing the second hydraulically openable sliding sleeve in a position on the tubular body and being releasable by application of hydraulic pressure at least substantially similar to the selected hydraulic pressure to the second hydraulically openable sliding sleeve, the first pressure release connection including a first type of pressure release mechanism and the second pressure release connection including a second type of pressure release mechanism different than the first type of pressure release mechanism. A tubing string and method may employ the ported sub.10-01-2009
20130146276Flow Control Hanger and Polished Bore Receptacle - A completion system is provided for completing downhole wells, comprising an upper polished bore receptacle incorporated into an intermediate casing of the downhole well and formed with a honed inner bore. A bottom packer for supporting a completion string within the intermediate casing has a first sealing assembly for sealing engagement against the inner bore of the upper polished bore receptacle. A lower polished bore receptacle is further incorporated into the intermediate casing and formed with a honed inner bore. A flow control hanger in the form of a hollow mandrel hangs a production liner in the intermediate casing and has a second sealing assembly for sealing engagement against an inner bore of the lower polished bore receptacle. A further completion system is provided comprising a polished bore receptacle (PBR) and a latch down packer having a lower end to which the PBR is connected.06-13-2013
20110067855GEOTHERMAL LINER SYSTEM WITH PACKER - A geothermal liner system with packer for sealing a producing zone within a wellbore has a mandrel placed in an interior of the wellbore, a packer releasably affixed around an outer surface of the mandrel, and a sleeve positioned adjacent an end of the mandrel. The liner system is generally tubular and may include joint casings and a mandrel, all being tubular-shaped. The packer is expandable upon exposure to wellbore conditions. The sleeve has perforations in a wall thereof. The mandrel is slidable relative to the packer when the packer expands against the wellbore. The sleeve is selectively controlled to manage production from sealed wellbore zones. The system is stabilized through various wellbore conditions, such as geothermal heat, by being adjustable for thermal expansion of parts of the system.03-24-2011
166243000 MISCELLANEOUS (E.G., ANCHOR PIPES) 3
20100018700Laminate Pressure Containing Body for a Well Tool - Apparatus if provided for use in wells, particularly wells that have high-pressure and high-temperature conditions in the well. The shells of completion equipment that is required to withstand the rigorous conditions in such wells are increased in strength by laminate layers that are formed of materials having higher yield strength than the yield strength of materials that can be used in well fluids.01-28-2010
20090301712Inert Substrate-Bonded Fluoroelastomer Components and Related Methods - Included within the scope of the invention is an article of cured fluoroelastomer composition bonded to an inert substrate. The cured fluoroelastomer composition includes a fluoropolymer, a silica, and an acrylate compound. The fluoroelastomer composition is bonded to the inert substrate with a bind having a bond durability of at least about 1500 pounds load at 20° C. The inert substrate may be a metal substrate or a ketone-based polymer substrate.12-10-2009
20130206395SYSTEM, METHOD AND APPARATUS FOR REDUCING SHOCK AND VIBRATION IN DOWN HOLE TOOLS - A snubber for reducing shock and vibration in down hole tools includes a housing having an axis and a chamber. A piston is mounted in the chamber for axial movement therein. The piston includes a shaft extending therefrom to an exterior of the housing. An axial spring element is mounted between the piston and the housing. Both the piston and the chamber include non-cylindrical portions.08-15-2013
166117000 RECEPTACLE OR PART THEREOF LEFT IN WELL 3
20110024106Ball Catcher with Retention Capability - A ball catcher is designed to stop balls that are the same size or different sizes at an inlet on a seat that is connected to a movable biased sleeve. Once the ball or other shaped object lands at the seat the flow around it increases differential pressure on the seat and sleeve and displaces them against the bias. The ball goes into a surrounding annular space and cannot exit. A preferably spiral sleeve guide the movement of the balls in the annular space so that efficient use of the annular space is made to maximize the number of balls that can be captured per unit length of the annular space. As soon as the ball enters the annular space the sleeve shifts back to the original position to stop the next ball at the inlet. Once in the annular space, the balls cannot escape if there is a flow reversal. The central passage remains open to pass other tools and flow.02-03-2011
20110000662Motion Transfer from a Sealed Housing - A source of motion for actuation of a downhole tool is in a sealed housing to protect it from well fluids. The sealed housing is filled with an incompressible fluid and thermal effects can be compensated preferably with a compensation bellows in communication with the fluid. The source of motion is preferable electrically powered and the longitudinal motion that results presses against a bellows within the sealed housing. This master bellows is in sealed contact with a slave bellows through a rigid housing that is seal welded to the housing wall. Movement of the master bellows in the housing results in an equal movement of the slave bellows outside the housing. Feedback loops or calibration for thermal effects are also contemplated.01-06-2011
20130118729PREVENTING FLOW OF UNDESIRED FLUID THROUGH A VARIABLE FLOW RESISTANCE SYSTEM IN A WELL - A flow control system for use with a subterranean well can include a flow chamber through which a fluid composition flows, and a closure device which is biased toward a closed position in which the closure device prevents flow through the flow chamber. The closure device can be displaced to the closed position in response to an increase in a ratio of undesired fluid to desired fluid in the fluid composition. A structure can prevent the closure device from being displaced to the closed position. The fluid composition can flow through the structure to an outlet of the flow chamber.05-16-2013
166177100 SONIC DEVICE 2
20110011576ACOUSTIC GENERATOR AND ASSOCIATED METHODS AND WELL SYSTEMS - A well system and associated method can include an acoustic generator which can be used to excite a formation with acoustic waves transmitted from the acoustic generator. Another well system and associated method can include an acoustic generator which can transmit acoustic waves into cement surrounding a casing. Another well system and associated method can include an acoustic generator which can be used to transmit acoustic waves into an annulus surrounding a well screen during or after a gravel packing operation. Another well system and associated method can include an acoustic generator which can be connected in a drill string in close proximity to a drill bit, with the acoustic generator transmitting acoustic waves into a formation ahead of the bit.01-20-2011
20090008082SOUND SOURCE FOR STIMULATION OF OIL RESERVOIRS - The present invention relates to a sound source for the stimulation of an oil reservoir or an oil well for enhanced oil recovery or for seismic logging of the reservoir. The sound source is operated by a pressurized gas from a compressor or a pressure tank on the surface, and the gas is transported to an in the sound source situated cylinder with an accumulator, via a feed line.01-08-2009
166104000 WITH MOTOR FOR ROTARY OR OSCILLATING MOTION 1
20100319907Drilling Tool with Feed Control - The present invention relates to a drilling tool (12-23-2010
166102000 CONVERTIBLE 1
20100155050Down hole tool - A flow back plug, a bridge plug, a ball drop plug and plug with a disintegratable check therein are made from a common subassembly including, in some embodiments, a mandrel, a slips/seal section, a setting assembly and a mule shoe. In other embodiments, the common components are a mandrel, a slips/seal section and a mule shoe. To make the flow back plug, a ball check is placed in the mule shoe. To make the bridge plug, an obstruction is inserted in the mule shoe. To make the ball drop plug, the mule shoe is left unobstructed so any ball dropped in a well seats in a tapered inlet to the mandrel. To make a plug with a disintegratable check, a ball dropped in the well is of a type that disintegrated in frac liquids. The setting assembly includes a setting rod connected to a setting device in the mandrel passage. When the plug is expanded into sealing engagement with a production string, the setting rod pulls out of the setting device leaving a passage through the mandrel and through the setting device. Another embodiment is an improved adapter sleeve used on conventional setting tools.06-24-2010
166114000 CENTRAL MEMBER WITH PRE-SET PACKER OR PLUG IN SAME CONDUIT 1
20090114383GAS LIFT APPARATUS FOR FLUSHING AND SNUBBING WELL - A gas lift production apparatus is provided for use in flushing and snubbing well operation. The apparatus comprises upper production string and lower production string. The upper production string includes at least one side pocket mandrel carrying a gas lift valve, tubular strings connected with every side pocket mandrel, a sliding sleeve installed as part of the production string below side pocket mandrels and a latch seal assembly threaded in the tubular string below the sliding sleeve. The lower production string includes a single bore packer below the latch seal assembly, tubular strings, a landing nipple and a bell mouth at the bottom of the production string. The upper production string are run in and removed as a single unit from the packer which is anchored within the well casing. It is emphasized that this apparatus is provided with three functions such as producing a gas lift well, flushing well and snubbing well operation. Application of the apparatus will prevent flushing or killing fluid from polluting the reservoir and increase production efficiency.05-07-2009
166064000 WITH TIME OR DISTANCE MEASURING, TEMPERATURE RESPONSIVE OR COUNTING MEANS 1
20110174478Apparatus for continuous downhole fluid release and well evaluation - An apparatus, capable of being conveyed on wireline, for continuous downhole injection of foaming agent(s) and/or beneficial chemical(s), comprising a reservoir and means for dispensing foaming agent(s) and/or beneficial chemical(s) from the reservoir of such apparatus and into the surrounding wellbore environment.07-21-2011
166540500 MEANS FOR CUTTING CABLE OR ROPE BELOW GROUND 1
20120211217CONTROL LINE RUNNING SYSTEM - A control line running system includes a control line storage unit and a guiding system having a guiding device and a guide rail for guiding a control line from the control line storage unit toward a well center. The system may also include a control line manipulator assembly for moving the control line toward a tubular and a control line clamp for attaching the control line to the tubular.08-23-2012
166157000 SCREEN WITH WASHING POINT OR SHOE 1
20130068449LASER CLADDING FE-CR ALLOY ON DOWNHOLE TOOLS - A hardfacing composition composed of an Fe—Cr alloy. The alloy is comprised of 80 wt % iron, about 2 wt % to about 20 wt % Cr, less than 1 wt % Si and less than 1 wt % C. The alloy's microstructure is at least 80 vol % martensite; and less than 20 vol % austenite.03-21-2013
166100000 LATERAL PROBE OR PORT SEALED AGAINST WELL WALL 1
20130112396Seal for a Wellbore - A seal apparatus for closing a wellbore, the apparatus being universally deployable and capable of closing the wellbore even in the case of damage located beneath a present blowout preventer. The apparatus is based on the idea of introducing a seal into the wellbore in order to close it off to avoid damage from a rising fluid. For this purpose, the seal has at least one apron, or a capsule. An opening of the apron, or distending of the capsule, causes a non-positive and/or positive connection to be produced in respect to the wall of the wellbore such that the wellbore is closed.05-09-2013

Patent applications in all subclasses Wells