| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 05/29/2013 | EP2596208A1 Oil recovery process for carbonate reservoirs |
| 05/29/2013 | EP2596207A1 Marine well containment system and method |
| 05/29/2013 | CN202955196U Chain transmission reversing device of beam-pumping unit |
| 05/29/2013 | CN202955152U Safe disk braking system for long-stroke oil pumping unit |
| 05/29/2013 | CN202954803U Multistage efficient rotary steam self-cleaning separator |
| 05/29/2013 | CN202954802U Cyclic heating device for hollow oil-sucking rod |
| 05/29/2013 | CN202954801U Piston gas well automatic foaming drainage ball throwing device |
| 05/29/2013 | CN202954800U Bubble discharging bar timing and quantifying intelligent injecting device |
| 05/29/2013 | CN202954799U Bridge type concentric divided injection ground control system |
| 05/29/2013 | CN202954798U Multifunctional water extraction and injection safety production string |
| 05/29/2013 | CN202954797U Electromechanical concentric separate injection measurement and adjustment control system |
| 05/29/2013 | CN202954796U Pressure-proof explosion transfer device for oil-gas well |
| 05/29/2013 | CN202954795U Pressure-resistant explosive device for oil and gas well |
| 05/29/2013 | CN202954794U Caber automatic hole opening device |
| 05/29/2013 | CN202954793U Slow-sucking coal-dust-preventive screen pipe |
| 05/29/2013 | CN202954792U Anti-blocking filtering screen pipe assembly of coal-bed gas well |
| 05/29/2013 | CN202954791U Energy-saving control system of pumping unit for oil field |
| 05/29/2013 | CN202954790U Intelligent intermittent oil production device |
| 05/29/2013 | CN202954789U Automatic balance device for vertical oil pumping unit |
| 05/29/2013 | CN202954788U Energy-saving device of walking-beam pumping unit |
| 05/29/2013 | CN202954787U Braking apparatus of beam-pumping unit |
| 05/29/2013 | CN202954771U Injection-production integrated unthreaded rod sealer |
| 05/29/2013 | CN202954747U Drainage and production string of coal-bed gas well |
| 05/29/2013 | CN1500177B Hydraulic fracturing fluid composition, its preparation method and method for producing underground rock fracture |
| 05/29/2013 | CN103122760A Completion pipe string for suspending bottom water coning |
| 05/29/2013 | CN103122759A Coal bed gas well multiple thermal fluid strengthening mining method |
| 05/29/2013 | CN103122758A Method for removing oil and increasing production biologically |
| 05/29/2013 | CN103122757A Microorganism reservoir oil displacement method |
| 05/29/2013 | CN103122756A Method for confirming deepwater water separating pipe gas lift drilling well gas injection volume |
| 05/29/2013 | CN103122755A Oil sieve tube |
| 05/29/2013 | CN103122754A Oil sand prevention device |
| 05/29/2013 | CN103122753A Near-sea separation and tie-back device for typhoon-resisting drilling risers |
| 05/29/2013 | CN102182446B Mine monitoring method and equipment |
| 05/29/2013 | CN102174883B Method for testing flow conductivity of clear water fracturing self-supported crack |
| 05/29/2013 | CN102011570B Process method for CO2 molded ground |
| 05/29/2013 | CN101994504B Continuous mixed acidification and fracturing combined process |
| 05/29/2013 | CN101892818B Dynamic balancing weight of vertical long-side isosceles triangular two-dimensional surface running orbit of oil pumping unit |
| 05/29/2013 | CN101818638B Fracturing and separate zone production combined operation device and method |
| 05/29/2013 | CN101687265B Manufacturing of sand screens |
| 05/29/2013 | CN101680292B Parallel heater system for subsurface formations |
| 05/29/2013 | CN101649734B Method for integrally catalyzing, reforming, reducing viscosity, extracting and transporting thick oil |
| 05/29/2013 | CN101555785B Improved carbon dioxide drive oil production method |
| 05/29/2013 | CN101268250B Method of producing a hydrocarbon stream from a subterranean zone |
| 05/29/2013 | CN101240698B Tower type pumping machine |
| 05/29/2013 | CA2809946A1 Tool and method for fracturing a wellbore |
| 05/28/2013 | US8450540 Compositions produced using an in situ heat treatment process |
| 05/28/2013 | US8449222 System for and method of installing foundation elements in an underwater ground formation |
| 05/28/2013 | US8448710 Plunger lift mechanism |
| 05/28/2013 | US8448707 Non-conducting heater casings |
| 05/28/2013 | US8448706 Delivery of particulate material below ground |
| 05/28/2013 | US8448705 Methods of preventing premature fracturing of a subterranean formation using a sheath |
| 05/28/2013 | US8448702 Methods of enhancing biogenic production of methane from hydrocarbon-bearing formations |
| 05/28/2013 | US8448700 Abrasive perforator with fluid bypass |
| 05/28/2013 | US8448699 Electrical submersible pumping system with gas separation and gas venting to surface in separate conduits |
| 05/28/2013 | US8448659 Check valve assembly for well stimulation operations |
| 05/28/2013 | CA2794014A1 Expandable sand screen and method for well casing for thermal oil recovery |
| 05/28/2013 | CA2751907C Composition and method for producing an ultra-lightweight ceramic proppant |
| 05/28/2013 | CA2707376C Device and method for gas lock detection in an electrical submersible pump assembly |
| 05/28/2013 | CA2701232C Pipe connection system |
| 05/28/2013 | CA2695397C A corrugated settling cup and a multi-cup uniform flux gas anchor |
| 05/28/2013 | CA2692797C Systems and methods for separating hydrocarbons from water |
| 05/28/2013 | CA2683432C Flow-actuated pressure equalization valve for a downhole tool |
| 05/28/2013 | CA2677608C Three-phase separation downhole |
| 05/28/2013 | CA2642257C Zirconium cross-linking composition and methods of use |
| 05/28/2013 | CA2557735C System and method for multiple wells from a common surface location |
| 05/28/2013 | CA2479402C An alcohol acidizing composition for treating a well to increase production |
| 05/25/2013 | CA2759362A1 Horizontal well line-drive oil recovery process |
| 05/25/2013 | CA2759357A1 Staggered horizontal well oil recovery process |
| 05/25/2013 | CA2759356A1 Oil recovery process using crossed horizontal wells |
| 05/23/2013 | WO2013075010A1 In-situ upgrading of bitumen or heavy oil |
| 05/23/2013 | WO2013074865A1 Positive displacement motor with radially constrained rotor catch |
| 05/23/2013 | WO2013074815A2 Gravel pack assembly and method of use |
| 05/23/2013 | WO2013074431A1 Detecting and correcting unintended fluid flow between subterranean zones |
| 05/23/2013 | WO2013074346A1 Downhole tools including anomalous strengthening materials and related methods |
| 05/23/2013 | WO2013074329A1 System and method for performing treatments to provide multiple fractures |
| 05/23/2013 | WO2013074248A1 Reactive choke for automatic wellbore fluid management and methods of using same |
| 05/23/2013 | WO2013074237A1 Gravel and fracture packing using fibers |
| 05/23/2013 | WO2013074113A1 Autonomous fluid control system having a fluid diode |
| 05/23/2013 | WO2013074069A1 Preventing flow of undesired fluid through a variable flow resistance system in a well |
| 05/23/2013 | WO2013073951A1 Subsea mateable earth connector |
| 05/23/2013 | WO2013071684A1 Direct-drive motor oil-pumping unit |
| 05/23/2013 | WO2013071434A1 Method for initiating circulation for steam-assisted gravity drainage |
| 05/23/2013 | WO2013049487A3 Apparatus and method for galvanically removing from or depositing onto a device a metallic material downhole |
| 05/23/2013 | WO2013001512A3 Gas injection for managed pressure drilling |
| 05/23/2013 | WO2012151303A3 Liner cementation process and system |
| 05/23/2013 | WO2012110867A3 Hydromechnical slot perforator (variants) |
| 05/23/2013 | WO2012107824A3 Cutting unit of a slot perforator (variants) |
| 05/23/2013 | WO2012071232A3 Flow back recovery system |
| 05/23/2013 | US20130126238 Oil Well Perforators |
| 05/23/2013 | US20130126237 Pass-through Bulkhead Connection Switch for a Perforating Gun |
| 05/23/2013 | US20130126187 Entry Tube System |
| 05/23/2013 | US20130126183 Product sampling system within subsea tree |
| 05/23/2013 | US20130126178 Method for fighting an oilspill in the aftermath of an underwater oil well blowout and installation for carrying out the method |
| 05/23/2013 | US20130126176 Dual-Phase Acid-Based Fracturing Composition With Corrosion Inhibitors and Method of Use Thereof |
| 05/23/2013 | US20130126175 Synthetic Sweet Spots in Tight Formations by Injection of Nano Encapsulated Reactants |
| 05/23/2013 | US20130126174 Water conversion system |
| 05/23/2013 | US20130126172 Method of making carbon dioxide |
| 05/23/2013 | US20130126171 Heat Dissipation in Downhole Equipment |
| 05/23/2013 | US20130126169 Tight Gas Stimulation by In-Situ Nitrogen Generation |
| 05/23/2013 | US20130126167 Percussion operated firing mechanism for perforation of wellbores and methods of using same |