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)
08/2008
08/21/2008US20080196879 Mechanically coupled screen and method
08/21/2008DE102007013418B3 Device for detecting crude oil portion in multiphase oil mixtures during oil production, has branching line, measuring chamber and control unit
08/21/2008DE102007008292A1 Hydrocarbon-containing substance extraction device, has production pipeline, and injection pipeline including active area designed as induction heater with respect to environment of active area in underground deposits
08/21/2008CA2708007A1 Tractor communication/control and select fire perforating switch simulations
08/21/2008CA2677907A1 Natural gas processing system
08/21/2008CA2677786A1 Locking cap for subsea tree
08/21/2008CA2677669A1 Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid
08/21/2008CA2677608A1 Three-phase separation downhole
08/21/2008CA2676673A1 Method and apparatus for obtaining heavy oil samples from a reservoir sample
08/20/2008EP1518037B1 Methods of sealing expandable pipe in well bores
08/20/2008CN201103889Y Vertically-arranged forced-circulation fire coal oil field gas filling boiler
08/20/2008CN201103535Y Multi-stroke balance beam balancing oil-pumping machine
08/20/2008CN201103534Y Exhausting and effect-reinforcing oil pump for injection and production
08/20/2008CN201103533Y Oil-pumping device for flexible transmission machine
08/20/2008CN201103388Y Fixed valve block-resistant device
08/20/2008CN201103387Y High-efficiency perforating tool especially for oil field
08/20/2008CN201103386Y Helical lifting oil pumping machine
08/20/2008CN201103385Y Device for promoting efficiency of oil-well pump
08/20/2008CN201103384Y Plunger type oil pumping machine driven by oil-submersible motor
08/20/2008CN201103383Y Fine adjustment balancing device of oil pumping machine
08/20/2008CN201103364Y Liquid fill adapter for gas well
08/20/2008CN101248250A Combined nitrogen generation system and well servicing fluid system in one power unit apparatus
08/20/2008CN101245699A On-line injection profile-control and flooding-control method and device
08/20/2008CN101245698A Confirming method for choosing low-permeation oil field oil pumping machine
08/20/2008CN101245697A Oil pumping machine and its control system and control method
08/20/2008CN100412370C Protector for multifunction oil-well pump
08/20/2008CN100412368C Efficient reversed beam-pumping unit
08/20/2008CN100412314C Process for gas collection by a well with one mouth and multiple branches drilled along coal layer
08/19/2008US7413022 Expandable flow control device
08/19/2008US7413020 Full bore lined wellbores
08/19/2008US7413017 Methods and compositions for inducing tip screenouts in frac-packing operations
08/19/2008US7413015 Perforating gun
08/19/2008US7413013 Surfactant-based fluid loss control agents for surfactant gels and associated fluids and methods
08/19/2008US7413012 System and method for collecting escaping hydrocarbons from a breached well pipe
08/19/2008US7413010 Remediation of subterranean formations using vibrational waves and consolidating agents
08/19/2008US7413009 System and method for pumping fluids
08/19/2008CA2557965C Procedures and equipment for profiling and jointing of pipes
08/19/2008CA2407916C Method and apparatus for communicating with downhole devices in a wellbore
08/19/2008CA2390585C Apparatus for and a method of anchoring an expandable conduit
08/19/2008CA2389094C Wellbore casing repair by tubing expansion
08/19/2008CA2359458C Integrated pumping system for use in pumping a variety of fluids
08/16/2008CA2621034A1 System, method, and apparatus for fracture design optimization
08/16/2008CA2582091A1 Hydrocarbon production system and method of use
08/14/2008WO2008098242A2 Process for recovering heavy oil
08/14/2008WO2008098133A1 System and method for a low drag flotation system
08/14/2008WO2008097226A1 Expandable tubular connection
08/14/2008WO2008097224A1 Protective sleeve for tubular connection
08/14/2008WO2008096165A1 Methods for reducing the viscosity of treatment fluids comprising diutan
08/14/2008WO2008096164A2 Treatment fluids comprising diutan and associated methods
08/14/2008WO2008096156A1 Improved method of blending hazardous chemicals to a well bore
08/14/2008WO2008072128A3 Fluid loss control and well cleanup methods
08/14/2008WO2008045408A8 Method for producing viscous hydrocarbon using steam and carbon dioxide
08/14/2008WO2008031040A3 Systems and methods to retard rod string backspin
08/14/2008US20080193219 Method and System for Starting up a Pipeline
08/14/2008US20080190624 Method for Drilling Oil and Gas Wells
08/14/2008US20080190622 Downhole production and injection pump system
08/14/2008US20080190619 Methods and compositions for improved stimulation of permeable subterranean reservoirs
08/14/2008US20080190618 Method of Blending Hazardous Chemicals to a Well Bore
08/14/2008US20080190617 Valve construction and method of use
08/14/2008US20080190616 Apparatus for Radially Expanding and Plastically Deforming a Tubular Member
08/14/2008US20080190610 Fracture Clean up Method
08/14/2008US20080190609 Methods for reducing the viscosity of treatment fluids comprising diutan
08/14/2008US20080190608 Gravel pack multi-pathway tube with control line retention and method for retaining control line
08/14/2008US20080190607 Process for Recovering Heavy Oil
08/14/2008US20080190606 In-situ method of producing oil shale, on-shore and off-shore
08/14/2008US20080190604 System and Method for Coordinated Monitoring and Control of Multiple Oil Well Pump Systems
08/14/2008US20080190601 Fracturing isolation sleeve
08/14/2008CA2582651A1 Safe backspin device
08/13/2008EP1955674A2 A method of conveying hydrocarbon fluids with a swirl flow
08/13/2008EP1954914A1 A method for receiving fluid from a natural gas pipeline
08/13/2008EP1954913A2 Methods for recovering oil from an oil reservoir
08/13/2008EP1954781A1 Particles
08/13/2008EP1604095B1 Propped fracture with high effective surface area
08/13/2008EP1423347B1 Aqueous fluorochemical polymer composition for water and oil repellent treatment of masonry and wellbores
08/13/2008CN201100305Y Improved crank pin screw cap for oil suction pump
08/13/2008CN201100232Y Smooth pole lubricator for oil suction machine
08/13/2008CN201100228Y A novel measuring spraying linked oil pump
08/13/2008CN201100125Y A return-prevention device for gas injection and oil extraction well
08/13/2008CN201100124Y An under-well pipe pole for hot collection of thick oil
08/13/2008CN201100123Y Anti-reverse discharge hollow water supplier
08/13/2008CN201100122Y A suction well structure for gas filling and gas collection pipe for gas suction well
08/13/2008CN201100121Y Pump suction holding and suction-assisted device
08/13/2008CN201100115Y Multi-purpose oil well gas injection valve
08/13/2008CN101243240A Method and apparatus associated with stimulation treatments for wells
08/13/2008CN101240792A High water-containing rod pumped well oiling type double-passage eccentric wear-proof process
08/13/2008CN101240704A Microorganism huff and puff oil recovery method
08/13/2008CN101240703A Indigenous microorganism oil flooding method
08/13/2008CN101240702A Oil layer coagulating type oil reservoir mining method
08/13/2008CN101240701A Non-strong water-sensitive special oil reservoir heating power oil extraction method
08/13/2008CN101240700A Free gas layer-containing natural gas hydrate mining simulator
08/13/2008CN101240699A Oilfield oil pumping machine energy-saving method and startup wheel
08/13/2008CN101240698A Tower type pumping machine
08/13/2008CN100410542C Dual control automatic water injection method for pump control and pump pressure flow
08/13/2008CN100410535C Fishable linear motor reciprocating pump
08/13/2008CA2578582A1 Method of fracturing a subterranean formation at optimized and pre-determined conditions
08/12/2008US7410934 Monomer, a dimer or oligomer of an anionic or cationic surfactant able to form a viscoelastic gel under downhole conditions; hydrophobic tail, a hydrophilic head attached through a stabilising group and a hydrocarbon chain
08/12/2008US7410012 Hydraulic automatic boosting pump
08/12/2008US7410001 Coupling and sealing tubulars in a bore
08/12/2008US7410000 Mono-diameter wellbore casing
08/12/2008US7409998 Critical velocity reduction in a gas well
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