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)
03/2005
03/24/2005US20050061514 Well drilling and completions system
03/24/2005US20050061510 Method for enhancing gas well secondary recovery operations
03/24/2005US20050061508 System and method of production enhancement and completion of a well
03/24/2005US20050061507 Methods of treating subterranean zones using gelled aqueous treating fluids containing environmentally benign sequestering agents
03/24/2005US20050061506 Well Treatment System and Method
03/24/2005US20050061504 Methods and compositions for treating subterranean zones
03/24/2005US20050061501 Alternate path gravel packing with enclosed shunt tubes
03/24/2005US20050061369 Mandrel for a gas lift valve
03/24/2005CA2539118A1 Hydraulic fracturing
03/23/2005EP1517001A2 Downhole expander device
03/23/2005EP1516103A1 Multi-point high pressure seal for expandable tubular connections
03/23/2005EP1472024A4 Protective sleeve for threaded connections for expandable liner hanger
03/23/2005EP1147283B1 Multilateral well and electrical transmission system
03/23/2005EP0840834B1 Apparatus and process for drilling and completing multiple wells
03/23/2005CN2687377Y Whirl saud-scraping oil-well pump
03/23/2005CN2687375Y Dropping-proof fixed valve assembly
03/23/2005CN2687332Y Oil-gas heating, separating, metering, oil-mixing integrating device
03/23/2005CN2687331Y Bridge type eccentric displacing device for injection collection well
03/23/2005CN2687330Y Special screen of eccentric blanking plug for oil field siparated layer water injection well
03/23/2005CN2687329Y Dual-support intelligent pumping unit
03/23/2005CN2687328Y Beamless pumping unit
03/23/2005CN2687327Y Auxiliary pumping device
03/23/2005CN2687326Y Efficient energ-saving beam-pumping unit
03/23/2005CN2687323Y Multifunctional bottom valve for water injection
03/23/2005CN1598310A Scrow oil pumping pump
03/23/2005CN1598309A Mfg. Method for integral cylinder stainless steel oil pumping pump
03/23/2005CN1598242A Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement
03/23/2005CN1598241A Technology for modifying treatment of residual polymer in petroleum extrating polymer displacement proceture
03/23/2005CN1598239A Anaerobic burning heating apparatus for oil field well
03/22/2005US6868913 Apparatus and methods for installing casing in a borehole
03/22/2005US6868912 Tension thrust ESPCP system
03/22/2005US6868911 Methods and apparatus for subterranean fluid separation and removal
03/22/2005US6868910 Method and device for regulating the flow rate of formation fluids produced by an oil well
03/22/2005US6868907 Outlet arrangement for down-hole separator
03/22/2005US6868906 Closed-loop conveyance systems for well servicing
03/22/2005US6868905 Expandable sand screen for use in a wellbore
03/22/2005US6868903 Production tool
03/22/2005CA2377890C Variable downhole choke
03/22/2005CA2325047C Submersible pump for use in a bore hole
03/22/2005CA2288479C Gimbal and seal for the drivehead of a downhole rotary pump
03/22/2005CA2229800C Apparatus and method for performing imaging and downhole operations at work site in wellbores
03/22/2005CA2194257C Recirculation pumping system for installation below the perforations in a cased well bore
03/19/2005CA2654524A1 Improving reservoir communication by creating a local underbalance and using treatment fluid
03/19/2005CA2654384A1 Improving reservoir communication by creating a local underbalance and using treatment fluid
03/19/2005CA2441640A1 Method for enhancing methane production from coal seams by inducing matrix shrinkage and placement of a propped fracture treatment
03/17/2005WO2005024289A1 Positive pressure gas jacket for a natural gas pipeline
03/17/2005WO2005024181A1 Methods for enhancing the consolidation strength of resin coated particulates
03/17/2005WO2005024178A1 Device and method of lining a wellbore
03/17/2005WO2005024171A2 Expandable tubular
03/17/2005WO2005024170A2 Radial expansion system
03/17/2005WO2004079145A3 Method for drilling and completing wells
03/17/2005WO2004034089A3 Borehole conductivity profiler
03/17/2005WO2004005670A8 Closed loop multiphase underbalanced drilling process
03/17/2005US20050059558 Methods for improving proppant pack permeability and fracture conductivity in a subterranean well
03/17/2005US20050059555 Methods and compositions for stabilizing the surface of a subterranean formation
03/17/2005US20050057005 Seal arrangement
03/17/2005US20050056804 Coupling device
03/17/2005US20050056459 Shaped charge
03/17/2005US20050056434 Collapsible expansion cone
03/17/2005US20050056433 Mono diameter wellbore casing
03/17/2005US20050056428 Hydraulic fracturing of ground formations
03/17/2005US20050056426 Casing conveyed well perforating apparatus and method
03/17/2005US20050056425 Method and apparatus for temporarily maintaining a downhole foam element in a compressed state
03/17/2005US20050056424 Environmentally benign viscous well treating fluids and methods
03/17/2005US20050056423 Methods of removing filter cake from well producing zones
03/17/2005US20050056418 System and method for sensing data in a well during fracturing
03/17/2005US20050056416 Plunger with flow passage and chamber
03/17/2005DE19581945B4 Antriebskopf für eine Bohrlochpumpe Drive head for a downhole pump
03/16/2005EP1402149A4 Method and apparatus for gravel packing a well
03/16/2005EP1187966A4 Controlling pressure and detecting control problems in gas-lift riser during offshore well drilling
03/16/2005CN2685605Y Bottom fixing suspension sedimentation oil-well pump
03/16/2005CN2685604Y Single-plate double-side stator type linear motor beam-pumping unit
03/16/2005CN2685566Y Automatic liquid rejecting device for petroleum associated gas drier
03/16/2005CN2685565Y Underwell oil-gas separator
03/16/2005CN2685564Y Coal underground gasified gas component on-line analysis preprocessing apparatus
03/16/2005CN2685563Y Heat producing well sleeve protector
03/16/2005CN2685562Y 泄油器 Bleeder
03/16/2005CN2685561Y Strong stainless steel boxing sand filtering pipe
03/16/2005CN2685560Y Electric permanent magnetic deep submerged Screw beam-pumping unit
03/16/2005CN2685559Y Oil-field pumping unit mule head beating apparatus
03/16/2005CN2685553Y Self-examining water injection packer
03/16/2005CN1596331A Expandable tubes with overlapping end portions
03/16/2005CN1594830A Intelligent oil recovery control system and control method thereof
03/16/2005CN1594829A Method for preventing casing wear in oil field
03/16/2005CN1594631A Expanding metal material and bulged tube device for petroleum oil well
03/16/2005CN1594492A High performance cleanup additive for oil and gas well and method for making same
03/16/2005CN1193161C Well screen having an internal alternate flow path
03/15/2005US6868040 Wireless power and communications cross-bar switch
03/15/2005US6866106 Fluid drilling system with flexible drill string and retro jets
03/15/2005US6866099 Methods of completing wells in unconsolidated subterranean zones
03/15/2005US6866097 Superpositioning of heaters for pyrolysis to form mixture of hydrocarbons and hydrogen; controlling pressure; heat exchanging
03/15/2005US6865978 Well perforating gun
03/15/2005US6865792 Method for making a well perforating gun
03/15/2005CA2245886C A process and a formulation to inhibit scale in oil field production
03/15/2005CA2117943C High-pressure, tubing-to-liner annulus seal for a well
03/10/2005WO2005021931A1 Expandable tubulars for use in geologic structures, methods for expanding tubulars, and methods of manufacturing expandable tubulars
03/10/2005WO2005021930A1 Methods for controlling migration of particulates in a subterranean formation
03/10/2005WO2005021929A1 Maximizing the efficacy of thiocyanate scavengers in oilfield brines
03/10/2005WO2005021921A2 A method of radially expanding and plastically deforming tubular members
03/10/2005WO2004097160A3 System and method using a continuously variable transmission to control one or more system components
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