| 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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| 12/12/2012 | CN101864934B Supercharging gas recovery method for two-stage ejector of gas field |
| 12/12/2012 | CN101725333B Mule head automatic adjusting device for pumping unit |
| 12/12/2012 | CN101709629B Reverse circulation aerodynamic cavitation method for coalbed methane well and equipment |
| 12/12/2012 | CN101694153B Bed boundary acoustic scan measuring-while-drilling device and method |
| 12/12/2012 | CN101174813B Energy-saving control method of oil pumping machine |
| 12/11/2012 | US8328996 Method and apparatus for desalinating water combined with power generation |
| 12/11/2012 | US8327952 Self-contained system for drilling a drainhole |
| 12/11/2012 | US8327942 Method and an apparatus for cold start of a subsea production system |
| 12/11/2012 | US8327941 Flow control device and method for a downhole oil-water separator |
| 12/11/2012 | US8327940 Method for hydraulic fracturing of a low permeability subterranean formation |
| 12/11/2012 | US8327936 In situ thermal process for recovering oil from oil sands |
| 12/11/2012 | US8327935 Methods of use of a salt solution of monovalent and divalent cations in hydraulic fracturing |
| 12/11/2012 | US8327934 Acoustically measuring annulus probe depth |
| 12/11/2012 | US8327932 Recovering energy from a subsurface formation |
| 12/11/2012 | US8327925 Use of barite and carbon fibers in perforating devices |
| 12/11/2012 | US8327885 Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well |
| 12/11/2012 | US8327746 Wellbore perforating devices |
| 12/11/2012 | CA2725013C Solution mining and a crystallizer for use therein |
| 12/11/2012 | CA2716819C Progressing cavity pump rubber reinforcement device for rotor alignment |
| 12/11/2012 | CA2694074C Hydrocarbon sweep into horizontal transverse fractured wells |
| 12/11/2012 | CA2684292C System and method for monitoring physical condition of production well equipment and controlling well production |
| 12/11/2012 | CA2659692C Dead string completion assembly with injection system and methods |
| 12/11/2012 | CA2611434C Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 12/11/2012 | CA2497225C High-pressure explosive retention device |
| 12/10/2012 | CA2779210A1 Multi-stage downhole hydraulic stimulation assembly |
| 12/07/2012 | CA2777956A1 Process for enhanced production of heavy oil using microwaves |
| 12/07/2012 | CA2777947A1 Process for enhanced production of heavy oil using microwaves |
| 12/07/2012 | CA2777942A1 Process for enhanced production of heavy oil using microwaves |
| 12/07/2012 | CA2777862A1 Process for enhanced production of heavy oil using microwaves |
| 12/07/2012 | CA2777859A1 Process for enhanced production of heavy oil using microwaves |
| 12/07/2012 | CA2777792A1 Process for enhanced production of heavy oil using microwaves |
| 12/07/2012 | CA2777790A1 Process for enhanced production of heavy oil using microwaves |
| 12/06/2012 | WO2012166643A2 Safety valve system for cable deployed electric submersible pump |
| 12/06/2012 | WO2012166638A2 Safety valve by-pass system for cable-deployed electric submersible pump |
| 12/06/2012 | WO2012166573A2 Gas injection while drilling |
| 12/06/2012 | WO2012166561A2 Compositions, methods, apparatus, and systems for incorporating bio-derived materials in drilling and hydraulic fracturing |
| 12/06/2012 | WO2012166436A1 Cyclic radio frequency stimulation |
| 12/06/2012 | WO2012166251A1 Integration of viscous oil recovery processes |
| 12/06/2012 | WO2012164382A1 Apparatus and method for operating a subsea compression system |
| 12/06/2012 | WO2012163967A1 A formation penetrating tool |
| 12/06/2012 | WO2012163714A1 Injection system for an oil-delivery system |
| 12/06/2012 | WO2012163610A1 System for obtaining and further processing natural gas |
| 12/06/2012 | WO2012162804A1 Method for controlling fluid interface level in gravity drainage oil recovery processes |
| 12/06/2012 | WO2012138501A3 Torque transmitting rings for sleeves in electrical submersible pumps |
| 12/06/2012 | WO2012135587A3 Premium mesh screen |
| 12/06/2012 | WO2012135101A3 Perforating gun and arming method |
| 12/06/2012 | WO2012125412A4 Proppant particles formed from slurry droplets and method of use |
| 12/06/2012 | WO2012115891A3 Method and apparatus for pulling a crown plug |
| 12/06/2012 | WO2011156157A3 Compact cable suspended pumping system for dewatering gas wells |
| 12/06/2012 | US20120305449 Converting heavy sour crude oil / emulsion to lighter crude oil using cavitations and filtration based systems |
| 12/06/2012 | US20120305269 System and method for casing hanger running |
| 12/06/2012 | US20120305267 Wellbore junction completion with fluid loss control |
| 12/06/2012 | US20120305266 Variably configurable wellbore junction assembly |
| 12/06/2012 | US20120305264 Solvent Surveillance in Solvent-Based Heavy Oil Recovery Processes |
| 12/06/2012 | US20120305263 Tandem progressive cavity pumps |
| 12/06/2012 | US20120305260 Emergency salvage of a crumbled oceanic oil well |
| 12/06/2012 | US20120305259 Annulus vent system for subsea wellhead assembly |
| 12/06/2012 | US20120305258 Method for increasing subsea accumulator volume |
| 12/06/2012 | US20120305255 Method of Treating the Near-Wellbore Zone of the Reservoir |
| 12/06/2012 | US20120305254 Methods to improve stability of high solid content fluid |
| 12/06/2012 | US20120305252 Insensitive explosive composition and method of fracturing rock using an extrudable form of the composition |
| 12/06/2012 | US20120305250 Non-invasive cement spacer fluid compositions, spacer fluid products, methods of well operation and well apparatus |
| 12/06/2012 | US20120305247 Proppant pillar placement in a fracture with high solid content fluid |
| 12/06/2012 | US20120305246 Shear-activated viscoelastic surfactant fluid and method |
| 12/06/2012 | US20120305245 Methods to improve stability of high solid content fluid |
| 12/06/2012 | US20120305240 System and Method for Ultrasonically Treating Liquids in Wells and Corresponding Use of Said System |
| 12/06/2012 | US20120305239 Cyclic radio frequency stimulation |
| 12/06/2012 | DE112010001360T5 System und Verfahren zur autonomen Produktion von Flüssigkeit und Elektrizität System and method for autonomous production of electricity and liquid |
| 12/06/2012 | CA2837737A1 A formation penetrating tool |
| 12/06/2012 | CA2837592A1 A method of conditioning a wall of a bore section |
| 12/06/2012 | CA2837083A1 Gas injection while drilling |
| 12/06/2012 | CA2834808A1 Method for controlling fluid interface level in gravity drainage oil recovery processes |
| 12/06/2012 | CA2829145A1 Cyclic radio frequency stimulation |
| 12/05/2012 | EP2530323A1 System for obtaining and processing natural gas |
| 12/05/2012 | EP2530240A1 A formation penetrating tool |
| 12/05/2012 | EP2530239A1 Injection system for an oil conveying system |
| 12/05/2012 | EP2530009A1 A method and apparatus for tensioning a buoy to an anchoring location |
| 12/05/2012 | EP2529163A2 System and method for tapping geothermal energy from two or more reservoirs |
| 12/05/2012 | EP2529079A1 Self-toughened high-strengh proppant and methods of making same |
| 12/05/2012 | CN202583816U Digital oil pumping machine intelligent control system |
| 12/05/2012 | CN202581257U Gradually slowed steaming type high-energy efficiency once-through steam injection boiler |
| 12/05/2012 | CN202580559U Centralized lubrication device for balance beam type pumping unit |
| 12/05/2012 | CN202579743U Lubrication and support type brake shoe shaft |
| 12/05/2012 | CN202578662U Device for continuously reducing hydrogen sulfide in oil well shaft |
| 12/05/2012 | CN202578661U Oil-sand separating device for water-spraying-type wellhead |
| 12/05/2012 | CN202578660U Environment-friendly ore dissolving device |
| 12/05/2012 | CN202578659U Hydraulic control rotation type ball injector |
| 12/05/2012 | CN202578658U Experimental automatic proppant adding device |
| 12/05/2012 | CN202578657U Automatic continuous reagent-adding device for oil well opening |
| 12/05/2012 | CN202578656U Wellhead remote control automatic bubble row bar device |
| 12/05/2012 | CN202578655U Control circuit used for perforating gun or perforating bullet |
| 12/05/2012 | CN202578654U Standard perforator for oil-string casing detection |
| 12/05/2012 | CN202578653U Flow plug used for gravel packing sand prevention of horizontal well |
| 12/05/2012 | CN202578652U In-place auxiliary bracket for vertical pipe |
| 12/05/2012 | CN202578651U Electric-heating type anti-thick-clamping oil fishing weight |
| 12/05/2012 | CN202578650U Swabbing trolley device of gas well |
| 12/05/2012 | CN202578649U Belt-type linear reciprocating oil pumping unit |
| 12/05/2012 | CN202578648U Multi-speed change reversing oil pumping unit |
| 12/05/2012 | CN202578647U Skid-mounted oil well pilot production device |
| 12/05/2012 | CN202578646U Anti-pollution hot-washing oil extraction device |