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)
05/2014
05/01/2014US20140116703 Wellbore Servicing Methods and Compositions Comprising Degradable Polymers
05/01/2014US20140116698 Wellbore Servicing Fluids Comprising Foamed Materials and Methods of Making and Using Same
05/01/2014US20140116697 Opening isolation for fluid injection into a formation from an expanded casing
05/01/2014US20140116696 Compositions And Methods Related To Mitigating Aluminum And Ferric Precipitates In Subterranean Formations After Acidizing Operations
05/01/2014US20140116695 Emulsified acid with hydrophobic nanoparticles for well stimulation
05/01/2014US20140116692 Well Treatment
05/01/2014US20140116690 Process for mineral oil production using surfactants at least comprising a secondary alkanesulfonate as a cosurfactant
05/01/2014US20140116689 Process for mineral oil production using surfactants based on anionic alkyl alkoxylates which have been formed from glycidyl ethers
05/01/2014US20140116685 Method of Controlling Growth and Heat Loss of an In Situ Gravity Drainage Chamber Formed With a Condensing Solvent Process
05/01/2014US20140116683 Method for increasing the permeability of the bottom well-bore region of a seam (is11.0138-us-pct)
05/01/2014US20140116682 Microbial processes for increasing fluid mobility in a heavy oil reservoir
05/01/2014US20140116681 Retrievable Filter Screen Assembly
05/01/2014CA2831928A1 Microbial processes for increasing fluid mobility in a heavy oil reservoir
04/2014
04/30/2014EP2725278A1 System for expanding a tubular element in a borehole
04/30/2014EP2725189A1 Wireline pump
04/30/2014EP2725188A2 Gravel pack apparatus having actuated valves
04/30/2014EP2725187A1 Inwardly swelling seal
04/30/2014EP2723986A2 Mining method for gassy and low permeability coal seams
04/30/2014EP2723978A1 A flushing tool and method of flushing perforated tubing
04/30/2014EP2723976A1 An annular barrier with external seal
04/30/2014EP2723972A1 Fracturing port locator and isolation tool
04/30/2014CN203572535U High-temperature steam-contained fluid heat exchanging and metering integrated device
04/30/2014CN203571702U Explosion-proof pipe of steam-injection boiler in oil field
04/30/2014CN203570918U Split type adjustable weight
04/30/2014CN203570845U Bearing cover tile assembly in oil sucking machine
04/30/2014CN203570304U Rotating magnetic field ranging guiding simulation test stand in SAGD (steam assisted gravity drainage) technology
04/30/2014CN203570294U Underground coal gasification model test table
04/30/2014CN203570293U Locked slide sleeve seat
04/30/2014CN203570292U Fracturing tubular column used for oil production by layer
04/30/2014CN203570291U High-pressure nitrogen foam generation measuring and controlling device
04/30/2014CN203570290U Water injection device for oil producing well
04/30/2014CN203570289U Large-pressure-difference real-time adjustment water distributor
04/30/2014CN203570288U New type plug
04/30/2014CN203570287U Blowout device
04/30/2014CN203570286U Sand-prevention and paraffin-control descaler
04/30/2014CN203570285U Sand-prevention filter device for production well
04/30/2014CN203570284U Sand and stone prevention sieve tube
04/30/2014CN203570283U Gravel prevention sieve tube of deep well
04/30/2014CN203570282U Deepwater underwater on-line piping system
04/30/2014CN203570281U Tower rack-type one-machine double-well oil pumping machine
04/30/2014CN203570280U Air-balanced hydraulic dual-well oil pumping unit
04/30/2014CN203570279U Lubricating device for braided rope of pumping unit
04/30/2014CN203570278U Gravel balance adjusting device for beam pumping unit
04/30/2014CN203570277U Oil field well opening liquid flow direction indicating device
04/30/2014CN203570276U Intermittent oil pumping control system
04/30/2014CN203570275U Balancing device of small-sized pumping unit for low permeability well
04/30/2014CN203570266U Steam injection well christmas tree heat preservation device
04/30/2014CN203570264U Cavity sleeved type reverse circulation valve
04/30/2014CN203570215U Efficient and energy-saving compensating device
04/30/2014CN203568931U Desalted water treatment device and high-dryness oilfield steam-injection boiler
04/30/2014CN203568819U Stepping-type movable oil pumping unit
04/30/2014CN103764949A Reducing sulfide in production fluids during oil recovery
04/30/2014CN103764948A Self-suspending proppants for hydraulic fracturing
04/30/2014CN103764947A Reducing sulfide in oil reservoir production fluids
04/30/2014CN103764946A Well emergency separation tool for use in separating a tubular element
04/30/2014CN103764945A Dual function proppants
04/30/2014CN103764944A A method of conditioning a wall of a bore section
04/30/2014CN103764795A Apparatus for the sublimation or pyrolysis of hydrocarbons using RF energy
04/30/2014CN103758739A Hydraulic piston pump lifting system
04/30/2014CN103758502A Compact GLCC (Gas-Liquid Cylindrical Cyclone) separation supercharging device and manufacturing method thereof
04/30/2014CN103758501A Coal underground gasification method
04/30/2014CN103758500A Underground gasification device and underground gasification method
04/30/2014CN103758499A Fracturing truck and fracturing equipment set
04/30/2014CN103758498A Method and device for improving drilling gas extraction efficiency
04/30/2014CN103758497A Wellhead gas injection device and application method
04/30/2014CN103758496A Nitrogen flooding concentric layered steam injection pipe column and nitrogen flooding concentric layered steam injection method
04/30/2014CN103758495A Method for increasing the recovery of hydrocarbons
04/30/2014CN103758494A Horizontal well external staged fracturing sand control string and method
04/30/2014CN103758493A Novel method for exploiting natural gas hydrate
04/30/2014CN103758492A Method for exploiting natural gas hydrate
04/30/2014CN103758491A Oil-gas well twin-well ground discharging and extracting device
04/30/2014CN103758490A Vertical pumping unit with single reducer wheel
04/30/2014CN103758489A Novel energy-saving vertical pumping unit
04/30/2014CN103758488A Flexible-beam pumping unit
04/30/2014CN103758487A Method for developing ultrahigh water-cut stage oil field
04/30/2014CN103756664A Densifier and fracturing fluid for shale gas fracturing fluid, preparation method and application thereof
04/30/2014CN103754108A Fracturing truck and fracturing equipment set
04/30/2014CN102602322B Electrically-driven fracturing pump truck
04/30/2014CN102383775B Double-cock ball throwing device and ball throwing method
04/30/2014CN102383760B Design method of sliding sleeve switch
04/30/2014CN102287180B Self-positioning underground flow metering and adjusting instrument
04/30/2014CN102251764B After-burning type supercritical pressure pre-combustion injector of combustor of gas and liquid two-phase fuel generator
04/30/2014CA2828710A1 Opening isolation for fluid injection into a formation from an expanded casing
04/29/2014US8709983 Non-phosphorus-based gellant for hydrocarbon fluids
04/29/2014US8709982 Additives for oil recovery from reservoirs
04/29/2014US8708663 Fugitive gas capture
04/29/2014US8708422 Inherently safe in situ uranium recovery
04/29/2014US8708307 Elongated trunnion for high pressure ball valves
04/29/2014US8708045 Multifunctional boronic acid crosslinking agents and associated methods
04/29/2014US8708044 Process for consolidating sand
04/29/2014US8708040 Double string pump for hydrocarbon wells
04/29/2014US8708039 Producing gas and liquid from below a permanent packer in a hydrocarbon well
04/29/2014CA2819664C Pressure assisted oil recovery
04/29/2014CA2783389C Anti-channeling pack-off particles used in a production section of an oil-gas well, and completion method and production method using such particles
04/29/2014CA2769356C Pentane-hexane solvent in situ recovery of heavy oil
04/29/2014CA2741824C Cement compositions and methods utilizing nano-hydraulic cement
04/29/2014CA2639418C Pump assembly
04/26/2014CA2830393A1 Gravel pack apparatus having actuated valves
04/24/2014WO2014062889A1 Systems and methods for enhancing recovery of hydrocarbon deposits
04/24/2014WO2014062862A1 System and method for thermally treating a subsurface formation by a heated molten salt mixture
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