| 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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| 01/31/2013 | US20130025844 Downhole Tool Delivery System With Self Activating Perforation Gun |
| 01/31/2013 | US20130025843 Managing Pressurized Fluid in a Downhole Tool |
| 01/31/2013 | DE112005001353B4 Klebrigmacher-Fluids auf Wasserbasis und Verfahren zu ihrer Verwendung Tackifier water-based fluid and methods for their use |
| 01/31/2013 | DE102010043529B4 Vorrichtung und Verfahren zur Verwendung der Vorrichtung zur "in situ"-Förderung von Bitumen oder Schwerstöl aus Ölsand-Lagerstätten Apparatus and method for using the device for "in situ" extraction of bitumen or heavy oil from oil sand deposits |
| 01/31/2013 | CA2843469A1 System and method for performing wellbore fracture operations |
| 01/31/2013 | CA2843107A1 Gas heater/cooler apparatuses and methods |
| 01/31/2013 | CA2843051A1 System and method for performing wellbore fracture operations |
| 01/31/2013 | CA2842340A1 Steam generation |
| 01/31/2013 | CA2842162A1 Pipe-in-pipe apparatus, and methods and systems |
| 01/30/2013 | EP2551443A2 Optimised method for treating a well against the inflow of sand |
| 01/30/2013 | EP2550428A2 Spark gap isolated, rf safe, primary explosive detonator for downhole applications |
| 01/30/2013 | EP2550427A2 System and method for controlling flow through a sand screen |
| 01/30/2013 | EP2550426A1 Manifold string for selectively controlling flowing fluid streams of varying velocities in wells from a single main bore |
| 01/30/2013 | EP2550422A1 Pressure controlled well construction and operation systems and methods usable for hydrocarbon operations, storage and solution mining |
| 01/30/2013 | EP2550343A1 Methods and compositions for sand control in injection wells |
| 01/30/2013 | CN202711074U Calibration instrument for oil derrick in oilfield |
| 01/30/2013 | CN202711034U High-efficiency oil-field oil extractor power saver based on application of photoelectric detection device |
| 01/30/2013 | CN202710537U High pressure gas test power source device |
| 01/30/2013 | CN202708532U Lubricating device for hanging load steel wire rope |
| 01/30/2013 | CN202708020U Transmission belt protective cover of oil pumping unit |
| 01/30/2013 | CN202707131U Gas-injection well body structure for gas-injection exploiting coal bed gas |
| 01/30/2013 | CN202707048U Oil well continuous sampling and separating device |
| 01/30/2013 | CN202707033U Sand filling model tube |
| 01/30/2013 | CN202707029U Multistage efficient gas and sand anchor |
| 01/30/2013 | CN202707028U Multistage separation gas anchor |
| 01/30/2013 | CN202707027U Centrifugal-type gas anchor |
| 01/30/2013 | CN202707026U Underground fluid reversing and separating device |
| 01/30/2013 | CN202707025U Novel multi-control type large-capacity, high-pressure and multilayer staged ball injection device |
| 01/30/2013 | CN202707024U Immovable separate stratum fracture technology pipe column |
| 01/30/2013 | CN202707023U Wing-shaped mixed-phase steam inlet constant dryness distributor |
| 01/30/2013 | CN202707022U Cylindrical equal dryness distributor |
| 01/30/2013 | CN202707021U Universal sleeve device with continuous adding of agents achievable |
| 01/30/2013 | CN202707020U Fusiform spherical eccentric distributing and injecting device |
| 01/30/2013 | CN202707019U High-molecular polymer homodisperse continuous injection device |
| 01/30/2013 | CN202707018U Bridge type eccentric overflowing water distributor and blanking plug thereof |
| 01/30/2013 | CN202707017U Anti-backflow eccentric water distributor |
| 01/30/2013 | CN202707016U Sliding sleeve for oil gas well slicing extraction |
| 01/30/2013 | CN202707015U Equilibrium differential external casing packer |
| 01/30/2013 | CN202707014U Two-stage compound energy-containing bullet sleeve |
| 01/30/2013 | CN202707013U Detonator joint of perforating gun in petroleum production |
| 01/30/2013 | CN202707012U Pre-posed sand-carrying double-stage compound perforator |
| 01/30/2013 | CN202707011U Integral spray nozzle for ejector |
| 01/30/2013 | CN202707010U Gun-body-free perforation gun-discarding device for oil gas well |
| 01/30/2013 | CN202707009U Derrick-free mechanical energy-storage oil pumping unit |
| 01/30/2013 | CN202707008U Mechanical energy-storage oil pumping unit |
| 01/30/2013 | CN202707007U Liquid quantity feedback device of electric pump well |
| 01/30/2013 | CN202707006U Externally-arranged balance weight chain type oil pumping machine |
| 01/30/2013 | CN202707005U Logging oil fishing vehicle |
| 01/30/2013 | CN202707004U Double-horsehead energy-saving oil pumping unit |
| 01/30/2013 | CN202707003U Casing gas collecting device |
| 01/30/2013 | CN202707002U Folding belt oil pumping unit |
| 01/30/2013 | CN202707001U Cluster well oil extractor of external rotor permanent magnetism synchronous motor |
| 01/30/2013 | CN202707000U Safety bumpers with counter weight |
| 01/30/2013 | CN202706999U Supporting frame system of non-beam pumping unit |
| 01/30/2013 | CN202706998U Energy-saving automatic dosing device for oil well |
| 01/30/2013 | CN1671945B Method of hydraulic fracture of subterranean formation |
| 01/30/2013 | CN102906369A System for providing uniform heating to subterranean formation for recovery of mineral deposits |
| 01/30/2013 | CN102906368A A downhole steam generator and method of use |
| 01/30/2013 | CN102900418A In-situ uranium leaching and mining treatment method by adding O2 into CO2 |
| 01/30/2013 | CN102900417A Sand charging device used during fracturing or slotting under coal mine and sand charging control method |
| 01/30/2013 | CN102900416A Device and method for reducing pressure and increasing oil |
| 01/30/2013 | CN102900415A Method for mining deep and ultra-deep thick oil pools by using double horizontal well fire flooding drainage |
| 01/30/2013 | CN102900414A Steam-flue gas mixing fluid generation method for thickened oil thermal recovery |
| 01/30/2013 | CN102900413A Method for increasing conformance factor of microorganism oil-dispersing plugging removing agent |
| 01/30/2013 | CN102900412A Injection feedback device for microorganism oil-dispersing plugging removing agent |
| 01/30/2013 | CN102900411A Biological permeability-increasing method for coal reservoir |
| 01/30/2013 | CN102900410A Repeated seat seal type packing water regulator |
| 01/30/2013 | CN102900409A Throwing-fishing-free separated layer water injection technology tubular column |
| 01/30/2013 | CN102900408A Experimental evaluation method of gas-injection displaceable oil of fracture-cave type carbonate reservoir |
| 01/30/2013 | CN102900407A Method for converting residual CO2 in oil reservoirs after CO2 flooding into methane |
| 01/30/2013 | CN102900406A Pressure-pulse oil well production-increasing device and application method thereof |
| 01/30/2013 | CN102900405A Tieback assembly for marine underground wellhead |
| 01/30/2013 | CN102900404A Method for exploiting naked eye type manmade migration channels between gas pools |
| 01/30/2013 | CN102900403A Method for establishing artificial natural gas migration channel between gas reservoirs |
| 01/30/2013 | CN102900402A Development method of offshore small-scale gas reservoir |
| 01/30/2013 | CN102900401A Method for building sleeve perforating manmade natural gas migration channels between gas pools |
| 01/30/2013 | CN102900400A Compact hydraulic oil pumping machine adopting composited pneumatic-hydraulic cylinder |
| 01/30/2013 | CN102900357A Rotary drilling rig and brine collecting method |
| 01/30/2013 | CN102899074A Integrated shale oil separating system |
| 01/30/2013 | CN102899012A Self-born acid and preparation method and application thereof |
| 01/30/2013 | CN102895889A Automatic stirring method for micro-organic oil-dispersing plug-removing agent |
| 01/30/2013 | CN102351361B Device and technology capable of combining high-salt content oil field sewage treatment and viscous oil recovery |
| 01/30/2013 | CN102003163B Well mouth eccentric pressurizing sleeve oil recycling mobile device of production well |
| 01/30/2013 | CN101852072B Special intelligent motive power device of oil pumping unit |
| 01/30/2013 | CN101806202B Water drainage and gas production simulated experimental device |
| 01/30/2013 | CN101768462B Emulsifying and viscosity-decreasing method of thick oil |
| 01/30/2013 | CN101749005B Protection process of underground drilling hole |
| 01/30/2013 | CN101649735B Method, system and device for identifying combustion state of underground coal gasification furnace |
| 01/30/2013 | CN101490360B Method for flow control and autonomous valve or flow control device |
| 01/29/2013 | US8361935 Metal free crosslinking of galactomannan |
| 01/29/2013 | US8360157 Slurrified heavy oil recovery process |
| 01/29/2013 | US8360152 Process and process line for the preparation of hydraulic fracturing fluid |
| 01/29/2013 | US8360149 Surface modification for cross-linking or breaking interactions with injected fluid |
| 01/29/2013 | US8360145 Selective placement of conformance treatments in multi-zone well completions |
| 01/29/2013 | CA2747886A1 A process and system for enhanced separation of hydrocarbon emulsions |
| 01/29/2013 | CA2710825C Conductivity enhancing structures for use with proppants in oil and gas wells |
| 01/29/2013 | CA2683763C Full bore lined wellbores |
| 01/29/2013 | CA2523472C Well treating method to prevent or cure lost-circulation |
| 01/26/2013 | CA2783781A1 Methods and systems for in-situ extraction of bitumen |
| 01/26/2013 | CA2782434A1 Thermally stable, nonionic foaming agent for foam fracturing fluids |