Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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)
08/2012
08/29/2012CN101666224B Double-helical reel-type pumping unit
08/29/2012CN101581206B Multiple-stroke flexible beam pumping unit
08/28/2012US8252731 Solid zirconium-based cross-linking agent and use in oil field applications
08/28/2012US8251570 Method for blending of concentrations for dilution on the fly
08/28/2012US8251155 Method of running DTS measurements in combination with a back pressure valve
08/28/2012US8251149 Method and apparatus to transport subterranean oil to the surface
08/28/2012US8251147 Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation
08/28/2012US8251145 Pressure relieving transition joint
08/28/2012US8251144 Flow diverter
08/28/2012US8251141 Methods useful for controlling fluid loss during sand control operations
08/28/2012US8251140 Fluid monitoring and flow characterization
08/28/2012US8251138 Securing layers in a well screen assembly
08/28/2012CA2760537A1 Wellbore tool for fracturing hydrdocarbon formations or fluid injection, and method of use
08/28/2012CA2732979A1 Multi-phase conductor shoe for use with electrical submersible pump
08/28/2012CA2709090C Electrical submersible pump and gas compressor
08/28/2012CA2668392C In situ recovery from a tar sands formation
08/28/2012CA2664617C Dual subsea production chokes for high pressure well production
08/28/2012CA2660219C System and method for thru tubing deepening of gas lift
08/28/2012CA2639450C System and method for controlling a progressing cavity well pump
08/28/2012CA2574015C Clay inhibitors for the drilling industry
08/25/2012CA2769356A1 Pentane-hexane solvent in situ recovery of heavy oil
08/24/2012CA2768128A1 Gas production using a pump and dip tube
08/23/2012WO2012112983A2 Apparatus and methods for well completion design to avoid erosion and high friction loss for power cable deployed electric submersible pump systems
08/23/2012WO2012112668A2 Surface close proximity wells
08/23/2012WO2012112657A2 Integrated zonal contact and intelligent completion system
08/23/2012WO2012112403A1 Gas trap
08/23/2012WO2012112247A2 Screen, method of expanding a screen and method of conforming a screen to a borehole
08/23/2012WO2012112020A1 Device for controlling fluids
08/23/2012WO2012110762A1 Cement slurry monitoring
08/23/2012WO2012109711A1 Igniting an underground coal seam in an underground coal gasification process, ucg
08/23/2012WO2012091881A3 Method and composition for enhanced hydrocarbons recovery from a formation containing a crude oil
08/23/2012WO2012091880A3 Method and composition for enhanced hydrocarbons recovery from a formation containing a crude oil
08/23/2012WO2012091829A3 Method and apparatus for controlling fluid flow into a wellbore
08/23/2012WO2011139824A3 Sand production control through the use of magnetic forces
08/23/2012WO2011075538A8 System and methods for removing fluids from a subterranean well
08/23/2012US20120211240 Apparatus and methods for well completion design to avoid erosion and high friction loss for power cable deployed electric submersible pump systems
08/23/2012US20120211239 Apparatus and method for controlling gas lift assemblies
08/23/2012US20120211238 Gas production using a pump and dip tube
08/23/2012US20120211237 Apparatus and method for pumping well fluids and debris
08/23/2012US20120211233 Scuttle for the monitoring and inspection of a flexible riser
08/23/2012US20120211230 Subsea separation systems
08/23/2012US20120211228 Artificial Lift Modeling Methods and Systems
08/23/2012US20120211227 Well Treatment Compositions and Methods Utilizing Nano-Particles
08/23/2012US20120211226 Screen, method of expanding a screen and method of conforming a screen to a borehole
08/23/2012US20120211225 Method and apparatus for enhancement of fracture fluid clean-up with periodic shock waves
08/23/2012US20120211222 Device for applying an expandable skirt having application diameter control upon advance
08/23/2012US20120211220 Torque absorbtion anchor system and method to assemble same
08/23/2012US20120211218 Boronized plunger
08/23/2012CA2827711A1 Gas trap
08/23/2012CA2827462A1 Anchoring seal
08/23/2012CA2827460A1 Stage tool
08/23/2012CA2827203A1 Screen, method of expanding a screen and method of conforming a screen to a borehole
08/23/2012CA2827011A1 Igniting an underground coal seam in an underground coal gasification process, ucg
08/22/2012EP2489827A2 Self-boosting, non-elastomeric resilient seal for check valve
08/22/2012EP2488721A1 Hydrocarbons
08/22/2012EP2488720A2 Perforating gun having self-closing penetration holes
08/22/2012CN202392424U Rainproof device for V-belt of oilfield oil extraction unit
08/22/2012CN202392092U Speed reduction box for oil pumping unit
08/22/2012CN202391901U Tongue-locking anti-theft horse head pin for oil pumping unit
08/22/2012CN202391404U Portable oil field wellhead casing gas recovering device
08/22/2012CN202391403U Well fracturing string
08/22/2012CN202391402U Well-head flow stabilizing device for oil and water wells
08/22/2012CN202391401U Integrated flooding synergy protector
08/22/2012CN202391400U Gravel-filled moderate water control device
08/22/2012CN202391399U Inner blind hole composite perforator
08/22/2012CN202391398U Seal pressure device for compound perforation of oil and gas well
08/22/2012CN202391397U Nozzle for hydraulic cutting high pressure spray gun
08/22/2012CN202391396U Automatic gun throwing device with pressure detonation and delayed detonation functions
08/22/2012CN202391395U Positioning system for riser support buoy under super-deep sea
08/22/2012CN202391394U Ultra-deep water offshore oil/gas engineering development system
08/22/2012CN202391393U Novel bailing type barrel oil pump
08/22/2012CN202391392U Electric oil producing prying device
08/22/2012CN202391391U Tail energy conservation device of beam type oil pumping unit
08/22/2012CN202391390U Device for regulating stroke frequency and balance of pumping unit in real time
08/22/2012CN202391389U Pumping unit with variable-diameter crown sheave and no beam
08/22/2012CN202391384U Remote control device of ground valve for oil and gas production and fracturing
08/22/2012CN202391378U Automatic ball injecting and receiving device for selective injection of casing deformation wells
08/22/2012CN202391368U Screen pipe hanger for petroleum drilling
08/22/2012CN202391360U Anti-break sucker rod suspending device
08/22/2012CN202387359U Double-throats type gas supersonic speed rotational flow separation device
08/22/2012CN102648332A Water injection systems and methods
08/22/2012CN102648331A Method and system for enhanced oil recovery
08/22/2012CN102648330A Method for hydrocarbon removal and recovery from drill cuttings
08/22/2012CN102644460A Three-dimensional well pattern model for in-situ mining of shale oil
08/22/2012CN102644455A Hydraulic control rotary ball injector
08/22/2012CN102644454A Method for increasing recovery ratio of thick oil
08/22/2012CN102644453A Novel Spar deep sea oil-exploration and oil-extraction engineering platform
08/22/2012CN102644452A Tower-type dual-chain belt oil pumping unit
08/22/2012CN102644451A Multi-stage variable speed reverse oil pumping machine
08/22/2012CN102644450A Weighted girder-less type strong-efficiency energy-saving oil pumping unit
08/22/2012CN102644442A Ultra-viscous crude oil injection-production integrated technique tubular pile
08/22/2012CN102643635A Stratum water-injection augmented injection agent of oil field
08/22/2012CN102080526B Method for extracting gas from bedding level fractured well of ground coal seam roof
08/22/2012CN102080518B Method for extracting gas from coal seam roof complex branched well
08/22/2012CN101705805B Well-head shutoff pressure prevention and casting head gas recovery integrated device
08/22/2012CN101539014B Thick oil thermal extraction saturated steam flow metering method
08/22/2012CN101525987B Oil extractor with external rotor electric machine
08/22/2012CN101343989B High-dryness oil field steam-injection boiler and high-dryness steam production method
08/22/2012CN101338659B Slit sieve tube with polytetrafluorethylene coatings
08/22/2012CN101215963B High pressure water injection electric motor control method and device
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