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US20130081801 Methods for Improving Coatings on Downhole Tools  
The present invention relates to the use of degradable coatings suitable for use on downhole tools. In particular, the present invention relates to pliable coatings for use on downhole tools that...
US20090065216 Degradable Downhole Check Valve  
Composite downhole tools for hydrocarbon production and methods for using same. The downhole tool can include an annular body having a valve assembly disposed therein. The valve assembly can...
US20140110122 Safety System for Wells Having a Cable Deployed Electronic Submersible Pump  
A safety system for a well having a cable deployed electronic submersible pump includes a barrier valve having a control line for opening and closing the valve, a first flapper safety valve...
US20110198082 DOWNHOLE TOOL ASSEMBLY WITH DEBRIS RELIEF, AND METHOD FOR USING SAME  
A tool assembly and method for completing a well are provided. The tool includes debris relief features that enable use in solids-laden environments, for example in the presence of sand. Forward...
US20120292044 TELEMETRIC CHEMICAL INJECTION ASSEMBLY  
A chemical injection assembly with telemetric capacity and a single fluid injection line capable of reaching multiple downhole injection points. The assembly may take advantage of downhole power...
US20140069646 E-RING DIVOT BACK-OUT LOCK  
An energizing ring can be used to energize a seal. In embodiments, the energizing ring has a recess, or divot, adjacent to a portion of the seal so that if the seal is deformed during a...
US20150047837 Multi-Zone Single Trip Well Completion System  
A well completion system having (i) a completion assembly; (ii) a service tool positioned within the completion assembly, wherein the service tool includes a substantially straight bore central...
US20120255777 WELLBORE PRESSURE CONTROL WITH OPTIMIZED PRESSURE DRILLING  
A well system can include an accumulator in communication with a wellbore, whereby the accumulator applies pressure to the wellbore. A method of maintaining a desired pressure in a wellbore can...
US20130192848 COMPLETIONS ASSEMBLY WITH EXTENDABLE SHIFTING TOOL  
A completions assembly that includes an extendable and retractable shifting tool at a lower end of an upper completion. Outfitted with this type of tool, the upper completion may be sealably...
US20120298377 Velocity Strings  
A velocity string installation method comprises the steps of: removing an existing safety valve from a production tubing safety valve nipple; running a velocity string into the production tubing...
US20130092380 DOWNHOLE CONTINGENCY APPARATUS  
A tubing mounted completion assembly that includes at least one downhole valve assembly and at least one contingency device. The contingency device or devices can be associated with and can be...
US20130327547 AQUIFIER FLOW CONTROLLING VALVE ASSEMBLY AND METHOD  
A valve assembly for use in aquifer liquid flow control in accordance with one embodiment can be used to deliver liquid to and/or from at least one selected aquifer in a plural aquifer system. In...
US20120312548 IN-BORE BLOW OUT PREVENTER METHOD AND APPARATUS  
Existing BOP devices are complex electromechanical systems exploiting hydraulic activation of pipe rams and/or shear rams. With tens of thousands of oil wells in the 1,500 oil fields that account...
US20140116720 High Temperature Back Pressure Valve  
A back pressure valve for sealing a wellbore. The back pressure valve has a cylindrical body with threads designed to engage threads in the opening of a tubing hanger within the wellbore. The back...
US20120103618 COILED TUBING BOTTOM HOLE ASSEMBLY WITH PACKER AND ANCHOR ASSEMBLY  
A bottom hole assembly (BHA), adapted to be positioned in a casing and to isolate a portion of a wellbore, which includes a packer assembly with a first sealing element extending between first and...
US20140290947 Radiused ID Baffle  
A method for servicing a subterranean formation comprising providing a wellbore penetrating the subterranean formation, and placing a wellbore servicing tool in the wellbore, wherein the wellbore...
US20130327539 DOWNHOLE VALVE  
A tool that is usable with a well includes a valve element, a mechanical operator, a pressure chamber and a regulator. The valve element has a first state and a second state. The mechanical...
US20140209320 PORTABLE RAM BLOCK CHANGER  
An apparatus for engaging and moving a ram block. In some embodiments, the apparatus, or ram block changer, includes a support bracket coupled to a blowout preventer and an articulated arm...
US20150068763 DOWNHOLE ACTUATOR  
A downhole actuator typically for a downhole tool such as a valve, and typically for incorporation in a string of tubulars in an oil or gas well has a central axis with radially movable...
US20140102720 Permeability Modification  
Downhole apparatus comprises a base pipe and a plurality of non-concentric pressure deformable chambers mounted externally on the pipe. The chambers may be inflated to increase the diameter of the...
US20130075108 BARRIER VALVE SYSTEM AND METHOD OF CLOSING SAME BY WITHDRAWING UPPER COMPLETION  
A completion system, including a barrier valve transitionable between an open position and a closed position. An upper completion is operatively coupled with the barrier valve for mechanically...
US20140000870 Safety Valve With Independent Flow Tube  
A safety valve can be disposed in a wellbore that is through a fluid-producing formation. The safety valve can include a flow tube that is allowed to move at least partially independent, or free,...
US20110284224 CUTTING DART AND METHOD OF USING THE CUTTING DART  
The present disclosure is directed to a cutting dart. The cutting dart comprises a dart body including a first pathway. The first pathway is configured to redirect cutting fluid flowing through a...
US20150159468 COMPLETION, METHOD OF COMPLETING A WELL, AND A ONE TRIP COMPLETION ARRANGEMENT  
A method of completing a well includes, positioning at least one valve within a tubular, closing the at least one valve, pressuring up against the closed at least one valve in a first direction,...
US20130255946 METHOD FOR SINGLE TRIP FLUID ISOLATION  
A completion system for arrangement in a borehole including a lower completion, an upper completion string, and an intermediate assembly engaged between the lower completion and the upper...
US20070240875 CHOKE FOR CONTROLLING THE FLOW OF DRILLING MUD  
A drilling system and method for drilling a well bore in to an earth formation is provided with drilling means for drilling a well bore and pumping means for pumping drilling fluid into the...
US20140251613 Inflow Control Valve  
A valve and valve assembly are provided to allow opening of flow channels through the wall of a tubular by increasing and then decreasing pressure in the tubular. Slidable seals having different...
US20140096978 Safety Valve System for Cable Deployed Electric Submersible Pump  
A safety valve system for downhole use in a wellbore comprises a safety valve comprising a sealable flow path; an annulus safety valve configured to provide fluid communication between a central...
US20120160478 HIGH STRENGTH DISSOLVABLE STRUCTURES FOR USE IN A SUBTERRANEAN WELL  
A well tool can include a flow path, and a flow blocking device which selectively prevents flow through the flow path. The device can include an anhydrous boron compound. A method of constructing...
US20110247833 HIGH STRENGTH DISSOLVABLE STRUCTURES FOR USE IN A SUBTERRANEAN WELL  
A well tool can include a flow path, and a flow blocking device which selectively prevents flow through the flow path. The device can include an anhydrous boron compound. A method of constructing...
US20120305243 INFLOW CONTROL IN A PRODUCTION CASING  
The present invention relates to a downhole inflow control system for controlling an inflow of fluid into a casing from outside the casing, such as from a reservoir or an intermediate casing. The...
US20110042100 WELLBORE CIRCULATION ASSEMBLY  
In some embodiments, a circulation assembly can direct all or substantially all fluid downstream in a drill string in a first mode of operation, and some or all fluid to an annulus in a second...
US20110000675 FLOW CONTROL DEVICE AND METHOD FOR A DOWNHOLE OIL-WATER SEPARATOR  
A downhole device having an oil/water separator having a well fluid inlet, an oil stream outlet conduit, and a water stream outlet conduit; a removable flow-restrictor located in at least one of...
US20130161027 Unequal Load Collet and Method of Use  
A downhole actuation system comprises an actuation mechanism comprising an indicator; a wellbore tubular; and a collet coupled to the wellbore tubular. The collet comprises a collet protrusion...
US20130192897 Downhole Tool Activation  
An apparatus for use in controlling first and second downhole tools includes a first cyclical indexing mechanism associated with a first downhole tool, and a second cyclical indexing mechanism...
US20150068773 Dual-Flow Valve Assembly  
A valve assembly connectable between first and second downhole components that each have first and second internal flowpaths. The valve assembly comprises a first valve operable to selectively...
US20150021018 High Pressure Large Bore Well Conduit System  
Well conduit system and methods using a first outer conduit wall and at least one second inner conduit wall positioned through a wellhead to define an annulus with radial loading surfaces...
US20090014071 Mud saver valve with magnetic latching  
A mud saver valve for retaining drilling fluid in the Kelly of a rotary drilling rig for insertion into a Kelly sub with an enlarged opening inside having a valve and hollow piston closing the...
US20080236843 INFLOW CONTROL DEVICE  
The present invention generally relates to the control of fluid flow in a wellbore. In one aspect, a flow control device for use in a wellbore is provided. The flow control device includes an...
US20150204150 APPARATUS AND METHODS FOR USE WITH DRILLING FLUIDS  
A method for facilitating a downhole cutting operation comprises providing a drilling fluid conditioning device in a surface portion of a tubular string providing mounting for a cutting tool on a...
US20090044944 Multi-Position Valve for Fracturing and Sand Control and Associated Completion Methods  
A completion tubular is placed in position adjacent the zone or zones to be fractured and produced. It features preferably sliding sleeve valves that can assume at least two configurations: wide...
US20090078429 SYSTEM AND METHOD FOR ENGAGING WELL EQUIPMENT IN A WELLBORE  
A technique is provided for moving a downhole equipment assembly into engagement or out of engagement with a lower completion positioned in a wellbore. An upper communication line extends past the...
US20150167425 Completion Systems With a Bi-Directional Telemetry System  
An apparatus for use in a wellbore for performing a treatment operation is disclosed that in one non-limiting embodiment may include an inner string that further includes a first tubular having a...
US20140034319 Method and Wellbore Servicing Apparatus for Production Completion of an Oil and Gas Well  
A method of servicing a subterranean formation comprising placing a wellbore servicing system within a wellbore penetrating the subterranean formation, wherein the wellbore servicing system...
US20090272539 Mechanical Bi-Directional Isolation Valve  
A valve having a sealing surface that is rotated 90 degrees on axial floating hinge assemblies is provided. A sleeve moves into position to protect the valve mechanism when the valve is in an open...
US20100300702 Wellbore Shut Off Valve with Hydraulic Actuator System  
A wellbore shut-off valve is operably associated with a valve actuator so that the shut-off valve can be selectively moved between open and closed conditions when desired rather than opening and...
US20120325484 INTEGRATED ZONAL CONTACT AND INTELLIGENT COMPLETION SYSTEM  
Systems and methods for producing from multiple zones in a subterranean formation are provided. The system can include a liner including a first frac valve, a second frac valve, and a formation...
US20150240628 WELL ISOLATION  
A system (10,100) for isolating a wellbore (12,112) having a fluid flow passage (18,118) extending from surface to a subterranean location has a first, downhole, valve (20,120) and a second,...
US20080029268 Flow Diverter  
A downhole tool comprises a body defining a fluid inlet and two or more fluid outlets. A valve arrangement cycles the proportion of fluid directed from the inlet to each of the outlets. One of the...
US20120292116 Vortex 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...

Matches 1 - 50 out of 298 1 2 3 4 5 6 >