| 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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| 12/04/2013 | CN203321467U Stopper of automatically-adjusted water distributor |
| 12/04/2013 | CN203321466U Mechanical self-regulation steady-flow device |
| 12/04/2013 | CN203321465U Bridge type concentric water distributor |
| 12/04/2013 | CN203321464U Safe inserting plate for oil-water well perforation and perforating gun tubular column matched with safe inserting plate |
| 12/04/2013 | CN203321463U Lifting type twice-perforation combined anchor |
| 12/04/2013 | CN203321462U Perforation bullet rack |
| 12/04/2013 | CN203321461U Pressure-proof anti-corrosion efficient filling water control screen pipe |
| 12/04/2013 | CN203321460U Horizontal well subsection gravel packing tool |
| 12/04/2013 | CN203321459U Sand prevention device for deep-well pump |
| 12/04/2013 | CN203321458U Exploiting device of seabed flammable ice |
| 12/04/2013 | CN203321457U Solar magnetic suspension pumping unit |
| 12/04/2013 | CN203321456U Steam-injection thermal-recovery oil pump |
| 12/04/2013 | CN203321455U Lifting rope replacing device for guide wheel of pumping unit |
| 12/04/2013 | CN203321454U Wind-proof type antifouling shield of pumping unit |
| 12/04/2013 | CN203321453U Hair braid replacement tool of beam-pumping unit |
| 12/04/2013 | CN203321452U Leakage isolation, blockage removal and production integrated string for oil and water wells of oilfields |
| 12/04/2013 | CN203321451U Tooth-shaped lock block type hydraulic balancer of pumping unit |
| 12/04/2013 | CN203321450U Pumping unit |
| 12/04/2013 | CN203321435U Dual-tube thermal-recovery wellhead device |
| 12/04/2013 | CN103429846A Fracturing system and method for an underground formation |
| 12/04/2013 | CN103429845A Method for fracturing a formation using a fracturing fluid mixture |
| 12/04/2013 | CN103429844A Submersible pump system |
| 12/04/2013 | CN103429843A Flow control screen assembly having remotely disabled reverse flow control capability |
| 12/04/2013 | CN103429842A Screen panel with improved screening area |
| 12/04/2013 | CN103429696A Method and composition for enhanced hydrocarbons recovery from a formation containing a crude oil |
| 12/04/2013 | CN103427729A Rod pumped well group control system based on direct current bus |
| 12/04/2013 | CN103425899A Method for modeling and simulating three-dimensional discrete element for shale pneumatic and hydraulic fracturing |
| 12/04/2013 | CN103423727A Oil field fuel coal steam-injection boiler |
| 12/04/2013 | CN103422849A Well pattern rebuilding method and device for water-injection development of old oil field |
| 12/04/2013 | CN103422848A Underground coal gasification method and grouting device |
| 12/04/2013 | CN103422847A Gas extraction method based on mining-induced fracture circular rectangular half-space zone |
| 12/04/2013 | CN103422846A Integrated tubular column for conducting well completion fracturing on open hole horizontal well |
| 12/04/2013 | CN103422845A Y-type reducing dual-channel high-pressure acidizing and fracturing well head device |
| 12/04/2013 | CN103422844A Slow release breaking method for surfactant fracturing fluids |
| 12/04/2013 | CN103422843A Device and method for burning thick oil to reduce viscosity in wellbore |
| 12/04/2013 | CN103422842A Plugging, regulating and washing process of oil well |
| 12/04/2013 | CN103422841A Viscosity reduction method and viscosity reducer for viscous oil |
| 12/04/2013 | CN103422840A Method of displacing oil by anionic-cationic composite surfactant |
| 12/04/2013 | CN103422839A Step-difference-free closable water nozzle plug |
| 12/04/2013 | CN103422838A Carbon dioxide huff and puff enhanced oil production method |
| 12/04/2013 | CN103422837A Method for generating pipeline in shaft |
| 12/04/2013 | CN103421484A Double-component aqueous fracturing fluid gel breaker and application method thereof |
| 12/04/2013 | CN103421478A Complex plug removal water injection agent used for water injection well of sandstone reservoir and preparation method thereof |
| 12/04/2013 | CN102701504B Method for preparing polymer solution for oil displacement of oil field |
| 12/04/2013 | CN102690644B Binary alkali-free complex composition for flooding, suitable for high-temperature and high-salinity reservoir, and application thereof |
| 12/04/2013 | CN102690643B Ternary complex composition for flooding and application thereof in tertiary oil recovery |
| 12/04/2013 | CN102676144B Composition for penetration-driving oil recovery agent and penetration-driving oil recovery agent |
| 12/04/2013 | CN102268985B Rapid powder filling system of continuous mixing vehicle |
| 12/04/2013 | CN102168543B Method and apparatus of improving recovery efficiency of shale gas through a blast mode |
| 12/04/2013 | CN102155189B Balancing torque converting device for beam-pumping unit |
| 12/04/2013 | CN101936149B Automatic circulation switchers, separate zone water injection system and automatic circulation water injection method |
| 12/04/2013 | CN101460703B Method and apparatus for hydraulic fracturing and monitoring |
| 12/03/2013 | US8597506 Subsea gravity separator |
| 12/03/2013 | US8596378 Perforating safety system and assembly |
| 12/03/2013 | US8596371 Methods for producing oil and/or gas |
| 12/03/2013 | US8596367 Process for producing mineral oil using surfactants based on C16C18-containing alkyl propoxy surfactants |
| 12/03/2013 | US8596364 Process for preventing or remediating trithiazine deposition in high H2S wells |
| 12/03/2013 | US8596362 Hydraulic fracturing methods and well casing plugs |
| 12/03/2013 | US8596361 Proppants and uses thereof |
| 12/03/2013 | US8596360 Gravel pack carrier fluids |
| 12/03/2013 | US8596359 Remotely controllable fluid flow control assembly |
| 12/03/2013 | US8596358 Well treatment |
| 12/03/2013 | US8596357 Methods and apparatuses for SAGD hydrocarbon production |
| 12/03/2013 | US8596356 Method of producing synthesis gas by the underground gasification of coal from a coal seam |
| 12/03/2013 | US8596355 Optimized well spacing for in situ shale oil development |
| 12/03/2013 | US8596352 Methods of increasing or enhancing oil and gas recovery |
| 12/03/2013 | US8596351 Horizontal in-well treatment system and source area bypass system and method for groundwater remediation |
| 12/03/2013 | US8596348 Downhole connector maintenance tool |
| 12/03/2013 | US8596346 Coal fines flocculation from produced water using oil-soluble phosphate ester |
| 12/03/2013 | CA2750658C Additives for improving motor oil properties |
| 12/03/2013 | CA2748747C Surface-modifying agents for wettability modification |
| 12/03/2013 | CA2724164C Methods of initiating intersecting fractures using explosive and cryogenic means |
| 12/03/2013 | CA2713261C Method for enhancing heavy hydrocarbon recovery |
| 12/03/2013 | CA2668983C Pipeless sagd system and method |
| 12/03/2013 | CA2666045C Profiled encapsulation for use with instrumented expandable tubular completions |
| 12/03/2013 | CA2633728C External protection for expanding tubular threaded joints |
| 12/03/2013 | CA2440247C Fracture monitoring using pressure-frequency analysis |
| 11/30/2013 | CA2818153A1 Sagd water treatment system and method |
| 11/30/2013 | CA2816646A1 Inflow control device having externally configurable flow ports |
| 11/30/2013 | CA2810022A1 In situ upgrading via hot fluid injection |
| 11/30/2013 | CA2808695A1 Apparatus, system and method for separating solids in submersible pump applications |
| 11/29/2013 | CA2817322A1 Process for separation and recovery of cuttings, emulsion and slurry components |
| 11/28/2013 | WO2013177212A1 Safety valve control system and method of use |
| 11/28/2013 | WO2013177162A2 Recovery of hydrocarbons from hydrocarbon-containing materials |
| 11/28/2013 | WO2013177146A1 Spectral analysis techniques for fluid monitoring |
| 11/28/2013 | WO2013177127A1 Spectral analysis techniques based upon spectral monitoring of a matrix |
| 11/28/2013 | WO2013177114A1 Methods for using liquefied natural gas for well stimulation |
| 11/28/2013 | WO2013177094A2 System and process for extracting oil and gas by hydraulic fracturing |
| 11/28/2013 | WO2013174823A1 Surfactant composition |
| 11/28/2013 | WO2013174816A1 Surfactant composition |
| 11/28/2013 | WO2013173907A1 Solvent injection plant for enhanced oil recovery and method of operating same |
| 11/28/2013 | WO2013173904A1 Sagdox geometry for impaired bitumen reservoirs |
| 11/28/2013 | WO2013092712A3 Method for recovery of hydrocarbon fluid |
| 11/28/2013 | WO2013092710A3 Method and system for impact pressure generation |
| 11/28/2013 | WO2013065032A4 Method for extracting individual components from a gas mixture and device for the implementation thereof |
| 11/28/2013 | WO2013059013A3 Method for hydrocarbon recovery using heated liquid water injection with rf heating |
| 11/28/2013 | WO2013028752A3 Method for hydrocarbon resource recovery by repairing a failed hydrocarbon recovery arrangement |
| 11/28/2013 | WO2013006660A3 Method for hydrocarbon recovery using sagd and infill wells with rf heating |
| 11/28/2013 | WO2012149318A3 Expansion system for an expandable tubular assembly |
| 11/28/2013 | US20130317798 Method and system for field planning |