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)
09/2012
09/05/2012CN202417452U Bidirectional energizing explosion propagating device
09/05/2012CN202417451U Elastic alignment pipe assembly for oil-gas well jet hole
09/05/2012CN202417450U Hydraulic sand blasting perforator
09/05/2012CN202417449U Sleeve pulling and withdrawing mechanism
09/05/2012CN202417448U Slotted screen pipe provided with novel slit cavity
09/05/2012CN202417447U Novel crank and balance weight moving device for beam-pumping unit
09/05/2012CN202417446U Adjustable range-extending device of oil pumping unit
09/05/2012CN202417445U Auxiliary tool for adjusting balance block of beam-pumping unit
09/05/2012CN202417444U Pumping unit for oil field
09/05/2012CN202417443U Inclined program control energy-saving oil pumping machine
09/05/2012CN202417442U Wide belt ultralong stroke twin-well pumping unit
09/05/2012CN202417441U Movable oil well casing gas recycling device
09/05/2012CN202417440U Box type hydraulic oil pumping machine
09/05/2012CN202417439U No-beam and energy-saving oil pumping machine
09/05/2012CN202417430U Water injecting valve provided with flow regulating function and used for water distributor
09/05/2012CN202417405U Underground digital type intelligent water plugging system for water injection well
09/05/2012CN202417400U Quick installing type casing head for thermal production well
09/05/2012CN202417329U Sand settling pipe for electric submersible pump well
09/05/2012CN202410493U Multi-intake-nozzle supersonic condensation separation device
09/05/2012CN202410290U Filter for oilfield water injection wellhead
09/05/2012CN102656337A Enhanced convection for in situ pyrolysis of organic-rich rock formations
09/05/2012CN102656335A Inhibiting liquid loading, corrosion and/or scaling in oilfield tubulars
09/05/2012CN102654049A Porous linear control hydraulic fracturing method
09/05/2012CN102654048A Injection-production two-trip pipe string balanced well killing control method
09/05/2012CN102654047A Hydrothermal catalytic modification, viscosity reduction, recovery and transportation integrated method for heavy oil
09/05/2012CN102654046A Top air-injection gravity auxiliary driving oil-extraction two-dimensional physical simulation experiment system
09/05/2012CN102654045A Top air injection gravity-assisted flooding oil-extraction one-dimensional physical simulation experimental system
09/05/2012CN102654044A Mechanical reversing double-well energy-saving oil pumping unit
09/05/2012CN102654023A Main and auxiliary underwater system for deepwater drilling and setting method thereof
09/05/2012CN101748999B Flow control sieve tube
09/05/2012CN101737019B Release packer capable of well-flushing
09/05/2012CN101705810B Segmented current controlling method of current controlling filter pipe column of oil-gas well having perforated pipe
09/05/2012CN101701517B Method for facilitating pulling out of downhole filter pipe from oil and gas well structure
09/05/2012CN101550823B Method and device for improving the accuracy of flow rate test of flowmeter used for water injection wells in oil fields
09/05/2012CN101377125B Water well acidizing and sand prevention liquid replacing apparatus
09/05/2012CN101260795B Circulating piping oil extraction device
09/04/2012US8258084 Spray dried emulsifier compositions, methods for their preparation, and their use in oil-based drilling fluid compositions
09/04/2012US8257055 System and process for pumping multiphase fluids
09/04/2012US8256522 Sand control screen assembly having remotely disabled reverse flow control capability
09/04/2012US8256517 Downhole multiple bore tubing apparatus
09/04/2012US8256513 Apparatus for depositing a slurry in a well
09/04/2012US8256512 Movable heaters for treating subsurface hydrocarbon containing formations
09/04/2012US8256511 Use of a heavy petroleum fraction as a drive fluid in the recovery of hydrocarbons from a subterranean formation
09/04/2012US8256510 Control screen assembly
09/04/2012US8256506 Tubing hanger
09/04/2012US8256504 Unlimited stroke drive oil well pumping system
09/04/2012US8256337 Modular initiator
09/04/2012CA2770006A1 Method and apparatus for fluid pumping
09/04/2012CA2742256C Environmentally friendly fracturing and stimulation composition and method of using the same
09/04/2012CA2629039C Method for improving bitumen recovery from oil sands by production of surfactants from bitumen asphaltenes
09/02/2012CA2770416A1 Reciprocating pump drive apparatus for operating a downhole pump via a rod string
08/2012
08/30/2012WO2012115891A2 Method and apparatus for pulling a crown plug
08/30/2012WO2012115889A2 Expandable packer with expansion induced axially movable support feature
08/30/2012WO2012115763A2 Method of introducing treatment agents into a well or flow conduit
08/30/2012WO2012115690A1 Method and system for field planning
08/30/2012WO2012115532A1 Bitumen emulsions for oilfield applications
08/30/2012WO2012113854A1 A method for producing hydrocarbons and installation for application thereof
08/30/2012WO2012085772A3 Methods and systems for interpreting multiphase fluid flow in a conduit
08/30/2012US20120217014 Wellbore tool for fracturing hydrocarbon formations, and method for fracturing hydrocarbon formations using said tool
08/30/2012US20120217013 Hydraulic fracture diverter apparatus and method thereof
08/30/2012US20120217012 Method of introducing treatment agents into a well or flow conduit
08/30/2012US20120217011 Apparatus and method for high pressure abrasive fluid injection
08/30/2012US20120217010 Open-Hole Packer For Alternate Path Gravel Packing, and Method For Completing An Open-Hole Wellbore
08/30/2012US20120217008 System and Method for Stress Field Based Wellbore Steering
08/30/2012US20120217007 Acoustic monitoring of hydrocarbon production
08/30/2012US20120217006 Drilling rig having rig operation loads supported on pressure control equipment
08/30/2012US20120217000 Low-voltage direct electrical heating lvdeh flexible pipes risers
08/30/2012CA2828202A1 Metallic nanoparticle biocide in industrial applications
08/30/2012CA2827921A1 Selective salt recovery from mixed salt brine
08/30/2012CA2827912A1 Process for removal of hydrogen sulfide in downhole oilfield applications
08/30/2012CA2827763A1 Use of micro-electro-mechanical systems (mems) in well treatments
08/30/2012CA2827733A1 Subsea conductor anchor
08/30/2012CA2826339A1 A method for producing hydrocarbons and installation for application thereof
08/30/2012CA2822810A1 Method and system for field planning
08/29/2012EP2493262A1 Low-voltage direct electrical heating LVDEH flexible pipes risers
08/29/2012EP2491224A2 Bottom hole assembly for subterranean operations
08/29/2012EP2491091A2 Method of reducing the viscosity of hydrocarbons
08/29/2012EP2490790A1 Stabilization and remote recovery of acid gas fractions from sour wellsite gas
08/29/2012CN202404642U Stroke frequency detector and beam-pumping unit using same
08/29/2012CN202402565U Belt special for pumping unit
08/29/2012CN202402026U Duplex-pressure detecting device for same-well extraction-injection system in electric submersible pump well
08/29/2012CN202402021U Well control air source drying distributor
08/29/2012CN202402020U Layer-unlimited electric-control fracturing sliding sleeve
08/29/2012CN202402019U Microcrack explosion spreading device used for desk research of layer explosion
08/29/2012CN202402018U Wet steam distributor
08/29/2012CN202402017U Ball injecting and receiving device for heavy oil steam injection operation
08/29/2012CN202402016U Spiral groove throttler
08/29/2012CN202402015U Underground adjustable water distribution device
08/29/2012CN202402014U Hollow water distributor
08/29/2012CN202402013U Oil-water well blockage removing device
08/29/2012CN202402012U Indirect driving traction type pumping unit
08/29/2012CN202402011U Bidirectional pumping unit capable of preventing load loss
08/29/2012CN202402010U Shock obstruction -removal efficiency oil extraction device
08/29/2012CN202402002U Telescopic decompression steam-injection packer
08/29/2012CN102652205A Integrated enhanced oil recovery process injecting nitrogen
08/29/2012CN102652204A System and method for waterflooding offshore reservoirs
08/29/2012CN102652115A Process for treating water in heavy oil production using coated heat exchange units
08/29/2012CN102650433A Electric heating ignitor for deep well and use method of electric heating ignitor
08/29/2012CN102650206A Method for improving recovery ratio of non-homogeneous pay
08/29/2012CN102650205A Method for producing oil by changing bottom water reservoir oil well into water dumping well and oil production well system
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