| 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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| 04/04/2013 | CA2848821A1 A downhole injection tool |
| 04/04/2013 | CA2848818A1 A punching tool |
| 04/04/2013 | CA2848420A1 Apparatus and method for galvanically removing from or depositing onto a device a metallic material downhole |
| 04/04/2013 | CA2848205A1 Method and system for hydraulic fracturing |
| 04/04/2013 | CA2847678A1 Wellbore flow control devices comprising coupled flow regulating assemblies and methods for use thereof |
| 04/04/2013 | CA2847591A1 Forming inclusions in selected azimuthal orientations from a casing section |
| 04/04/2013 | CA2790267A1 Oil thinning compositions and retrieval methods |
| 04/03/2013 | EP2574721A1 A punching tool |
| 04/03/2013 | EP2574720A1 A downhole injection tool |
| 04/03/2013 | CN202854582U Automatic-dispensing remote monitoring system of natural gas well foam discharging rod |
| 04/03/2013 | CN202854525U Remote monitoring system for charging foaming agent into natural gas well |
| 04/03/2013 | CN202852783U Device and dryness raiser for improving steam dryness of steam injection boiler |
| 04/03/2013 | CN202851910U Low output rotating speed reduction gearbox for pumping unit |
| 04/03/2013 | CN202850975U Skid-mounted type double-volume automatic metering device |
| 04/03/2013 | CN202850969U Downhole spiral rotational flow gas-liquid separation device of gas well |
| 04/03/2013 | CN202850968U Sand-adding device for coal mine underground fracturing or slotting |
| 04/03/2013 | CN202850967U Seal-type circulative thermal recovery device |
| 04/03/2013 | CN202850966U Single tube sand filling model device used for profile control |
| 04/03/2013 | CN202850965U Oil jacket prevention dosing hopper for oil field |
| 04/03/2013 | CN202850964U Automatic charging apparatus for well head foam drainage bar |
| 04/03/2013 | CN202850963U Automatic charging apparatus for bubble discharging balls |
| 04/03/2013 | CN202850962U Separated layer water injection allocating device used in straight well section of horizontal well |
| 04/03/2013 | CN202850961U Winding type injection allocation device |
| 04/03/2013 | CN202850960U Axial screw-type sealing injection allocation device |
| 04/03/2013 | CN202850959U Allocation pipe column used in straight well section of subsection water injection of horizontal well |
| 04/03/2013 | CN202850958U Jet flow pressure regulating device of injection well |
| 04/03/2013 | CN202850957U Perforating bullet with big fragments and deep penetration |
| 04/03/2013 | CN202850956U Floating three-proofing-type stainless steel wire wrap slotted sand control screen |
| 04/03/2013 | CN202850955U Oil screen pipe screw shifting support device |
| 04/03/2013 | CN202850954U Special tool for adjusting balance |
| 04/03/2013 | CN202850953U Side standing type hydraulic oil pumping machine |
| 04/03/2013 | CN202850952U Multi-well linkage phase position balanced type oil pumping machine |
| 04/03/2013 | CN202850951U Tool capable of fast adjusting balance of pumping unit |
| 04/03/2013 | CN202850946U Oil well valve watering-process ternary well mouth combined valve |
| 04/03/2013 | CN202844951U On-line emulsion breaking device for emulsion polymer |
| 04/03/2013 | CN103025997A Oil recovery process for carbonate reservoirs |
| 04/03/2013 | CN103025996A Sulfonated internal olefin surfactant for enhanced oil recovery |
| 04/03/2013 | CN103025994A Subsea hydrocarbon production system |
| 04/03/2013 | CN103016044A Comprehensive method of drilling, permeability increasing, repairing and gas-driven displacing of drill hole underground coal mine |
| 04/03/2013 | CN103015997A Filtration plugging testing apparatus and simulation method for process of fracture temporary plugging by ice crystals |
| 04/03/2013 | CN103015993A Water and gas disperse injection device for core gas-injection flooding experiment |
| 04/03/2013 | CN103015959A Mechanical-thermal hydrate exploiting method |
| 04/03/2013 | CN103015958A Underground spiral gas-liquid separation and reinjection device as well as reinjection method |
| 04/03/2013 | CN103015957A Flow guiding and fracturing method |
| 04/03/2013 | CN103015956A Expansion friction type flying-preventing device |
| 04/03/2013 | CN103015955A Open-hole horizontal well multi-cluster sliding sleeve staged fracturing string and fracturing method thereof |
| 04/03/2013 | CN103015954A Producing well shaft combined gravity assisted heat pipe |
| 04/03/2013 | CN103015953A Underground electric stepless flow control valve |
| 04/03/2013 | CN103015952A Method for packing multiple layers of gravel in one time |
| 04/03/2013 | CN103015951A Layer-selected oil production processing pipe column |
| 04/03/2013 | CN103015950A Novel mechanical oil extraction system |
| 04/03/2013 | CN103015949A Gas well gas production tree |
| 04/03/2013 | CN103015948A Swabbing device |
| 04/03/2013 | CN103015944A Method of completing poorly consolidated formations |
| 04/03/2013 | CN103015898A Mining hydraulic power operation machine |
| 04/03/2013 | CN103013486A Fracturing fluid and fracturing method for increasing applicaiton efficiency of support agent in fractured cracks |
| 04/03/2013 | CN103013485A Modified resin sand consolidation agent as well as preparation method and application thereof |
| 04/03/2013 | CN103013480A Modified petroleum coke granule composite profile control water blocking agent and multi-round bidirectional blocking control technology |
| 04/03/2013 | CN102381915B Preparation method of microsphere for detonation of blasting in oil field layer |
| 04/03/2013 | CN102220860B Polymer-surfactant binary compound oil displacement method |
| 04/03/2013 | CN102155196B Dynamic laser perforation device capable of penetrating into rock under petroleum well |
| 04/03/2013 | CN102061158B Foam reinforcing polymer oil displacement agent and method |
| 04/03/2013 | CN102052062B Energy-saving tower-type oil pumping device |
| 04/03/2013 | CN101915075B Gas hydrate mined by adopting low-temperature solid oxide fuel cell method and device thereof |
| 04/03/2013 | CN101818634B Method for regulating and controlling microbial community for oil extraction |
| 04/03/2013 | CN101761323B Alliance method of oil well perforation, fracturing and snubbing transferring pumping |
| 04/03/2013 | CN101737027B High energy gas fracturing device of oil reservoirs of horizontal well |
| 04/03/2013 | CN101575964B Experimental method and device for simulating exploitation of gas hydrates |
| 04/03/2013 | CN101525992B Closed cuttings storage device for sulfur-bearing formation underbalanced drilling |
| 04/02/2013 | US8408314 Multi-point chemical injection system for intelligent completion |
| 04/02/2013 | US8408313 Methods for application of reservoir conditioning in petroleum reservoirs |
| 04/02/2013 | US8408312 Compact cable suspended pumping system for dewatering gas wells |
| 04/02/2013 | US8408306 Processes and systems for treating oil and gas wells |
| 04/02/2013 | US8408305 Method of enhancing fracture conductivity |
| 04/02/2013 | US8408301 Shear tolerant aqueous based fracturing fluids and methods |
| 04/02/2013 | US8408300 Open-hole stimulation system |
| 04/02/2013 | US8408299 Viscous oil recovery using emulsions |
| 04/02/2013 | US8408294 Radio frequency technology heater for unconventional resources |
| 04/02/2013 | US8408293 Reducing methane slack when starting and stopping biogas fermenters |
| 04/02/2013 | US8408292 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 04/02/2013 | US8408289 Liquified petroleum gas fracturing system |
| 04/02/2013 | US8408287 Electrical jumper for a producing oil well |
| 04/02/2013 | US8408286 Perforating string with longitudinal shock de-coupler |
| 04/02/2013 | CA2748363C Method and system for producing hydrocarbons from a hydrate reservoir using available waste heat |
| 04/02/2013 | CA2658756C Technique and apparatus for drilling and completing a well in one half trip |
| 04/02/2013 | CA2492741C Pressure control apparatus and method |
| 04/02/2013 | CA2473017C Well chemical treatment utilizing plunger lift deliver system |
| 03/30/2013 | CA2791492A1 Hydrocarbon recovery from bituminous sands with injection of surfactant vapour |
| 03/28/2013 | WO2013043995A2 Adjustable fracturing system |
| 03/28/2013 | WO2013043975A1 Hydrocarbon mobility and recovery through in-situ combustion with the addition of ammonia |
| 03/28/2013 | WO2013043583A2 Gas lift assist for fossil fuel wells |
| 03/28/2013 | WO2013043499A2 A bottom hole assembly for deploying an expandable liner in a wellbore |
| 03/28/2013 | WO2013043042A1 Spherical separation device and method for separation |
| 03/28/2013 | WO2013041036A1 New leaching-mining process by drilling underground in situ |
| 03/28/2013 | WO2013040718A1 Pyromellitamide gelling agents |
| 03/28/2013 | WO2013040625A1 In situ treatment of synthesis gas |
| 03/28/2013 | WO2013003760A3 Well pump with seal section having a labyrinth flow path in a metal bellows |
| 03/28/2013 | WO2013003269A3 Method for generating a general enhanced oil recovery and waterflood forecasting model |
| 03/28/2013 | WO2012174586A3 Mining method for gassy and low permeability coal seams |
| 03/28/2013 | WO2012166638A3 Safety valve by-pass system for cable-deployed electric submersible pump |