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)
04/2003
04/24/2003WO2003033861A1 Method for servicing a production well and an insert pump for carrying out said method
04/24/2003WO2003033856A1 Riser for connection between a vessel and a point at the seabed
04/24/2003WO2002086276A3 Method for in situ recovery from a tar sands formation and a blending agent produced by such a method
04/24/2003WO2002068788A3 Well pumping unit driven by linear motor
04/24/2003WO2002055841A3 Well screen having a line extending therethrough
04/24/2003WO2002038343A3 Apparatus and methods for separating and joining tubulars in a wellbore
04/24/2003US20030078732 Method of predicting friction pressure drop of proppant-laden slurries using surface pressure data
04/24/2003US20030075507 Includes a production string and a membrane positioned within
04/24/2003US20030075340 Lubricant for use in a wellbore
04/24/2003US20030075339 Wear-resistant, variable diameter expansion tool and expansion methods
04/24/2003US20030075338 Apparatus and method to expand casing
04/24/2003US20030075337 Method of expanding a tubular member in a wellbore
04/24/2003US20030075335 Extended reach tie-back system
04/24/2003US20030075333 Technique for fracturing subterranean formations
04/24/2003US20030075328 Apparatus and method for increasing the permeability of a productive oil formation about an existing oil well bore to stimulate oil extraction therefrom
04/24/2003US20030075326 Well completion method
04/24/2003US20030075325 Apparatus and method for progressively treating an interval of a wellbore
04/24/2003US20030075324 To stimulate hydrocarbon production and prevent the production of fine particulate materials
04/24/2003US20030075323 Technique utilizing an insertion guide within a wellbore
04/24/2003US20030075322 Method and system for management of by-products from subterranean zones
04/24/2003US20030075318 In situ thermal processing of a coal formation using substantially parallel formed wellbores
04/24/2003US20030075317 Bi-directional explosive transfer subassembly and method for use of same
04/24/2003US20030075316 Multi-shot tubing perforator
04/24/2003US20030075315 Methods and apparatus for completing wells in unconsolidated subterranean zones
04/23/2003EP1303681A1 Well management system
04/23/2003EP1027527B1 Fluid separation and reinjection systems for oil wells
04/23/2003CN2546651Y Sand stop oil well pump
04/23/2003CN2546630Y Gun body connector on perforating gun
04/23/2003CN2546629Y Pneumatic beam pumping unit
04/23/2003CN1412414A Method for explosion opening and fracturing closing salt layer and its equipment
04/23/2003CN1412412A Pumping well sucker-rod string rotation technique
04/22/2003US6551466 Water purification
04/22/2003US6550821 Threaded connection
04/22/2003US6550542 Fluid profile control in enhanced oil recovery
04/22/2003US6550539 Tie back and method for use with expandable tubulars
04/22/2003US6550535 Apparatus and method for the downhole gravity separation of water and oil using a single submersible pump and an inline separator containing a control valve
04/22/2003US6550534 Utilization of energy from flowing fluids
04/22/2003CA2075562C Oil and gas fractionating process on an oil pool effluent
04/17/2003WO2003032331A2 Radially expandable tubular connection
04/17/2003WO2003031771A1 Contractable and expandable tubular wellbore system
04/17/2003WO2002048498A3 Enhanced oil recovery method using downhole gas
04/17/2003US20030070816 Methods and apparatus for creating a downhole buoyant casing chamber
04/17/2003US20030070815 Methods and apparatus for creating a downhole buoyant casing chamber
04/17/2003US20030070814 Methods and apparatus for creating a downhole buoyant casing chamber
04/17/2003US20030070813 Backwash oil and gas production
04/17/2003US20030070811 Apparatus and method for perforating a subterranean formation
04/17/2003US20030070810 Hanging liners by pipe expansion
04/17/2003US20030070809 Method of progressively gravel packing a zone
04/17/2003US20030070808 Use of syngas for the upgrading of heavy crude at the wellhead
04/17/2003US20030070807 In situ thermal processing of a coal formation to produce nitrogen and/or sulfur containing formation fluids
04/17/2003US20030070805 Slotting near well zone to relieve stresses; materials handling
04/17/2003US20030070804 Gas and oil production
04/16/2003EP1301686A2 Combined liner and matrix system
04/16/2003EP1203177A4 Expandable joint connector
04/16/2003EP0958446B1 Method and device for driving bore-holes, specially for prospection and extraction drillings
04/16/2003CN2545392Y Sealing structure of rod oil well pump
04/16/2003CN2545368Y Oil well pump borehole oil-gas separating device
04/16/2003CN2545367Y Rope pulley beam combined cluster well interdynamic felf-balanced pump unit
04/16/2003CN2545366Y Hydraulic cylinder rope pulley cluster multi-well interdynamic balanced pumping unit
04/16/2003CN2545365Y L-shaped multi-well interdynamic self-balanced pumping unit
04/16/2003CN2545364Y Multirope friction pulley linear pumping unit
04/16/2003CN1410651A Electromagnetic heating composite oil dredging out tool
04/16/2003CN1105600C Catalyst for producing petroleum and its preparing method
04/15/2003US6547532 Annular suction valve
04/15/2003US6547514 Technique for producing a high gas-to-liquid ratio fluid
04/15/2003US6547037 Hydrate reducing and lubrication system and method for a fluid flow system
04/15/2003US6547011 Method and apparatus for controlling fluid flow within wellbore with selectively set and unset packer assembly
04/15/2003US6547005 System and a method of extracting oil
04/15/2003US6547003 Downhole rotary water separation system
04/15/2003US6546962 Introduction of air into injection water
04/15/2003US6546809 Method for measuring the flow rates of the single phases in a multiphase fluid stream and relevant apparatus
04/15/2003CA2407102A1 Use of syngas for the upgrading of heavy crude at the wellhead
04/10/2003WO2003029614A2 Tool and method for measuring properties of an earth formation surrounding a borehole
04/10/2003WO2003029612A1 Method for the recovery of hydrocarbons from hydrates
04/10/2003WO2003029611A1 Method and system for producing an oil and gas mixture through a well
04/10/2003WO2003029610A1 Downhole multi-phase twin screw pump
04/10/2003WO2003029609A1 Tubular expansion apparatus and method
04/10/2003WO2003029608A1 Method and apparatus for expanding and separating tubulars in a wellbore
04/10/2003WO2003029607A1 Mono-diameter wellbore casing
04/10/2003WO2003029603A1 Wellbore system for simultaneous drilling and production
04/10/2003WO2003029386A1 Recovery and reforming of crudes at the heads of multifunctional wells and oil mining system with flue gas stimulation
04/10/2003US20030067166 Radially expandable tubular connection
04/10/2003US20030066655 Apparatus for coupling a tubular member to a preexisting structure
04/10/2003US20030066652 Wireless downhole well interval inflow and injection control
04/10/2003US20030066650 Drilling system and method for controlling equivalent circulating density during drilling of wellbores
04/10/2003US20030066649 Single well combination oil production/water dump flood apparatus and methods
04/10/2003US20030066644 In situ thermal processing of a coal formation using a relatively slow heating rate
04/10/2003US20030066643 Methods of downhole testing subterranean formations and associated apparatus therefor
04/10/2003US20030066642 In situ thermal processing of a coal formation producing a mixture with oxygenated hydrocarbons
04/10/2003US20030066640 Method and apparatus for injecting one or more fluids into a borehole
04/10/2003CA2462756A1 Mono-diameter wellbore casing
04/09/2003EP1300457A1 Method of increasing the low shear rate viscosity and shear thinning index of divalent cation-containing fluids and the fluids obtained thereby
04/09/2003EP1299616A1 Deformable member
04/09/2003EP0975992A4 Pressure impulse telemetry apparatus and method
04/09/2003EP0877895B1 A sub-sea pumping system and an associated method
04/09/2003CN2544100Y Solution preparing and filling device for oil field
04/09/2003CN2544099Y High-strength adjustable double-layer sand-proof sieve pipe for oil well
04/09/2003CN2544098Y Pressure-decreasing type filling signal sand proof sieve pipe
04/09/2003CN2544097Y Cylinder type straight line motor driven oil suction machine
04/09/2003CN2544096Y Weight-hanging pulley set balance type oil suction machine
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