| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 12/23/2009 | CN101608536A Passive type multifunctional well head backflow dredging compensating device |
| 12/23/2009 | CN100572492C Horizontal well segmenting perforating compression fracture technique and rubber plug of self-breaking glue solution bung |
| 12/23/2009 | CA2726335A1 Mineral extraction system having multi-barrier lock screw |
| 12/23/2009 | CA2726298A1 Frac adapter for wellhead |
| 12/22/2009 | US7635034 Spring load seal assembly and well drilling equipment comprising same |
| 12/22/2009 | US7635026 Methods and devices for forming a wellbore with casing |
| 12/22/2009 | US7635023 Time sequenced heating of multiple layers in a hydrocarbon containing formation |
| 12/22/2009 | CA2591955C Ram automatic locking system for a blowout preventer |
| 12/22/2009 | CA2585080C Methods and systems for reverse-circulation cementing in subterranean formations |
| 12/22/2009 | CA2585077C Cementing well bore pipe with activator on outer surface |
| 12/22/2009 | CA2585069C Methods for producing fluids from acidized and consolidated portions of subterranean formations |
| 12/22/2009 | CA2585066C Casing strings and methods of using such strings in subterranean cementing operations |
| 12/17/2009 | WO2009150461A1 Hole packer and seal |
| 12/17/2009 | WO2009126451A3 Sealing devices having a metal foam material and methods of manufacturing and using same |
| 12/17/2009 | US20090308620 Method for Removing a Sealing Plug from a Well |
| 12/17/2009 | US20090308619 Method and apparatus for modifying flow |
| 12/17/2009 | US20090308616 Method and Apparatus for a Monodiameter Wellbore, Monodiameter Casing, Monobore, and/or Monowell |
| 12/17/2009 | US20090308612 Method for wellbore servicing to enhance the mechanical strength of cement using electrochemically activated water |
| 12/17/2009 | US20090308611 Wellbore Servicing Compositions Comprising a Density Segregation Inhibiting Composite and Methods of Making and Using Same |
| 12/17/2009 | US20090308592 Packer |
| 12/16/2009 | EP2133509A1 Open hole packer and seal |
| 12/16/2009 | EP2132407A2 Cement plug launch system |
| 12/16/2009 | EP2132406A1 Ball seat assembly and method of controlling fluid flow through a hollow body |
| 12/16/2009 | EP2132405A2 Well tool having enhanced packing element assembly |
| 12/16/2009 | EP2132401A2 Optimized machining process for cutting tubulars downhole |
| 12/16/2009 | CN201363120Y Compensating temperature-sensitive packer |
| 12/16/2009 | CN201363119Y Automatic vertical correcting combined-type full-functional well sealing device |
| 12/16/2009 | CN201363118Y Anti-oil theft device for oilwell bushing |
| 12/16/2009 | CN201363117Y Cable perforation blowout preventer pressure test seat and retrievable pole thereof |
| 12/16/2009 | CN201363112Y Well cleaning and inflating integrated device used for screen tube sublevel well completion |
| 12/16/2009 | CN201363100Y Anti-clogging pup joint for drill rod |
| 12/16/2009 | CN101605964A Silicate-based wellbore fluid and methods for stabilizing unconsolidated formations |
| 12/16/2009 | CN101605963A Configurable wellbore zone isolation system and related methods |
| 12/16/2009 | CN101603414A Method for reinforcing wall of drill hole by jet grouting |
| 12/16/2009 | CN100569889C Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes |
| 12/15/2009 | US7632786 Methods and fluid compositions for depositing and removing filter cake in a well bore |
| 12/15/2009 | US7631697 Oilfield apparatus comprising swellable elastomers having nanosensors therein and methods of using same in oilfield application |
| 12/15/2009 | US7631695 Wellbore zonal isolation system and method |
| 12/15/2009 | US7631693 Retrievable plug system and methods of use |
| 12/15/2009 | US7631692 Settable compositions comprising a natural pozzolan and associated methods |
| 12/15/2009 | US7631689 Sulfur barrier for use with in situ processes for treating formations |
| 12/15/2009 | CA2612121C Methods and materials for zonal isolation |
| 12/15/2009 | CA2472090C Lost circulation compositions comprising resilient carbon and water-swellable polymers |
| 12/15/2009 | CA2444059C Tubing rotator |
| 12/15/2009 | CA2443390C Methods of treating subterranean zones penetrated by well bores |
| 12/10/2009 | WO2009148320A1 Method for connecting a conductor casing and wellhead in a subsea well and wellhead therefor |
| 12/10/2009 | WO2009147564A1 Single packer system for use in a wellbore |
| 12/10/2009 | WO2009147040A2 Christmas tree for use on a well |
| 12/10/2009 | WO2009146563A1 Wellbore fluid treatment process and installation |
| 12/10/2009 | WO2009102703A3 Self adjusting debris excluder sub |
| 12/10/2009 | US20090302243 Wiper seal assembly |
| 12/10/2009 | US20090301730 Apparatus and methods for inflow control |
| 12/10/2009 | US20090301728 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 12/10/2009 | US20090301727 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 12/10/2009 | US20090301723 Interface for deploying wireline tools with non-electric string |
| 12/10/2009 | US20090301720 Remote plugging device for wells |
| 12/10/2009 | US20090301714 Composition and Method For Using Waxy Oil-External Emulsions To Modify Reservoir Permeability Profiles |
| 12/10/2009 | CA2727137A1 Single packer system for use in a wellbore |
| 12/10/2009 | CA2726207A1 Wellbore fluid treatment process and installation |
| 12/09/2009 | EP2131639A2 Subsea electronics module |
| 12/09/2009 | EP2129865A1 Swellable packer with enhanced sealing capability |
| 12/09/2009 | CN201358752Y Bridge plug of cement squeeze |
| 12/09/2009 | CN201358751Y High pressure sealing grease injecting nozzle |
| 12/09/2009 | CN201358750Y Hydrodynamic drop-in tool of bridge plug |
| 12/09/2009 | CN201358749Y Straddle-packer |
| 12/09/2009 | CN201358748Y Novel blow-out preventing packer for thermal recovery |
| 12/09/2009 | CN201358747Y Small diameter hydraulic packer |
| 12/09/2009 | CN201358746Y Anti-drop plug of test well head |
| 12/09/2009 | CN201358745Y Low type annular blowout preventer |
| 12/09/2009 | CN201358744Y Well head pressing and sealing device of oil-water well |
| 12/09/2009 | CN201358729Y Non-channeling plugging water technique pipe column of oil well |
| 12/09/2009 | CN201358728Y Multifunctional anti-pollution pipe column |
| 12/09/2009 | CN101598020A Energy-saving and heat-preserving novel technology for exploring bittern by natural flow |
| 12/09/2009 | CN101598015A High-precision measuring method for high-pressure well cementation slurry and device thereof |
| 12/09/2009 | CN101598008A Switch valve device at the top of heat injection column in thermal recovery wellhead |
| 12/09/2009 | CN101598007A Tubing plug |
| 12/09/2009 | CN101598006A Hydraulic expansion type tail pipe hanger |
| 12/08/2009 | US7628201 Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same |
| 12/08/2009 | CA2654447C Well bore isolation using tool with sliding sleeve |
| 12/08/2009 | CA2339101C Wellbore fluids containing particulates having acid degradable acetal crosslinks |
| 12/03/2009 | WO2009146411A1 Wellbore packer |
| 12/03/2009 | WO2009146206A2 Subsea tree safety control system |
| 12/03/2009 | WO2009143628A1 Cementing sub for annulus cementing |
| 12/03/2009 | WO2009143617A1 Temperature conditioned stuffing box with fluid containment |
| 12/03/2009 | WO2009117478A3 Torque-provider |
| 12/03/2009 | WO2009114371A3 Pressure compensator for hydrostatically-actuated packers |
| 12/03/2009 | US20090294177 Backup safety flow control system for concentric drill string |
| 12/03/2009 | US20090294137 Wellbore packer |
| 12/03/2009 | US20090294133 Injection Apparatus and Method |
| 12/03/2009 | US20090294132 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 12/03/2009 | US20090294131 Christmas Tree and Wellhead Design |
| 12/03/2009 | US20090294128 Wellbore Method and Apparatus for Completion, Production and Injection |
| 12/03/2009 | US20090294126 Methods of limiting or preventing fluid flow through a portion of a subterranean formation |
| 12/03/2009 | US20090294125 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 12/03/2009 | US20090294120 Actively energized dynamic seal system |
| 12/03/2009 | US20090294119 Large bore packer |
| 12/03/2009 | CA2726332A1 Temperature conditioned stuffing box with fluid containment |
| 12/03/2009 | CA2726200A1 Cementing sub for annulus cementing |
| 12/02/2009 | EP2128378A1 An injection apparatus and method |
| 12/02/2009 | EP2128377A2 Large bore packer |