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)
12/2003
12/04/2003WO2003099050A1 Method for recovering and maintaining the productivity of a well
12/04/2003WO2002066788A8 Fluid flow control apparatus
12/04/2003WO2000003117A3 Full bore gun system
12/04/2003US20030225521 Modeling, simulation and comparison of models for wormhole formation during matrix stimulation of carbonates
12/04/2003US20030224165 Particulate material having multiple curable coatings and methods for making and using same
12/04/2003US20030222455 Expandable connector
12/04/2003US20030222409 Non-rotating expandable connection with collapsing type seal
12/04/2003US20030221843 Junction isolation apparatus and methods for use in multilateral well treatment operations
12/04/2003US20030221841 Monobore shoe
12/04/2003US20030221840 Method of expanding a sand screen
12/04/2003US20030221839 Double-pin radial flow valve
12/04/2003US20030221838 Well stimulation tool and method of using same
12/04/2003US20030221837 Method and apparatus to reduce downhole surge pressure using hydrostatic valve
12/04/2003US20030221836 Multi seam coal bed/methane dewatering and depressurizing production system
12/04/2003US20030221834 Systems and methods for controlling flow and access in multilateral completions
12/04/2003US20030221830 Re-enterable gravel pack system with inflate packer
12/04/2003US20030221829 Well communication system
12/04/2003US20030221828 Apparatus and method for gravel packing an interval of a wellbore
12/04/2003US20030221827 Oil and gas production with downhole separation and reinjection of gas
12/03/2003EP1119686B1 Method and system for separating and injecting gas and water in a wellbore
12/03/2003CN2589699Y Mechanical sealed overhead screw pump driving device
12/03/2003CN2589675Y Polymer dried powder water jet dispersion and dissolution apparatus
12/03/2003CN2589674Y Precise double blind hole type composite perforating tool
12/03/2003CN2589673Y Slim-hole deep penetration perforating tool
12/03/2003CN2589672Y Motor recombined type linear motion actuator pumping unit
12/03/2003CN2589671Y Straight drive head sheave pumping unit
12/03/2003CN2589670Y Line pumping unit
12/03/2003CN2589666Y Settled sand burying-proof standing valve for oil-well pump
12/02/2003US6656366 Especially applicable to deep water subsea wells, precipitating solids dissolved in the stream
12/02/2003US6655459 Completion apparatus and methods for use in wellbores
12/02/2003US6655457 Method for use in sampling and/or measuring in reservoir fluid
12/02/2003US6655456 Liner hanger system
12/02/2003US6655455 Flow completion system
12/02/2003US6655454 Check enhancer for injecting fluids into a well
12/02/2003US6655291 Shaped-charge liner
12/02/2003CA2250726C Pump-off controller
11/2003
11/29/2003WO2003102364A1 Method of expanding a sand screen
11/27/2003WO2003098153A2 Downhole tool deployment safety system and methods
11/27/2003WO2003098104A2 Stimulation and injection system
11/27/2003WO2003097994A1 System for treating an underground formation
11/27/2003WO2003042486A3 Collapsible expansion cone
11/27/2003WO2003038227A3 Filter train for underground collecting mains and method for introducing said filter train into predetermined layers of soil
11/27/2003US20030220750 methods for monitoring fluid front movements in hydrocarbon reservoirs using permanent sensors
11/27/2003US20030220204 Use of surface-modified nanoparticles for oil recovery
11/27/2003US20030217956 Methods and apparatus for separating fluids
11/27/2003US20030217865 Bore lining and drilling
11/27/2003US20030217848 System and method for flow/pressure boosting in a subsea environment
11/27/2003US20030217846 Mitigation of proppant sticking in removing downhole tools
11/27/2003US20030217844 Deformable member
11/27/2003US20030217842 Method and system for accessing a subterranean zone from a limited surface area
11/27/2003CA2714872A1 Downhole oilfield tubulars having liners with diffusion barrier layer
11/27/2003CA2485991A1 Stimulation and injection system
11/27/2003CA2386475A1 Ezy tester
11/26/2003EP1364107A1 Hydraulic fracturing fluid comprising a block copolymer containing at least one water-soluble block and one hydrophobic block
11/26/2003CN2588075Y Stabilizer for piston draw-rod of oil pump
11/26/2003CN2588053Y Screw blade type separator
11/26/2003CN2588052Y Ring piece assembling sand-resisting pipe
11/26/2003CN2588051Y Sand filter
11/26/2003CN2588050Y Crude oil dredging vehicle
11/26/2003CN1458389A Regenerating method for oil field perforator
11/26/2003CN1458388A Triple liquid draining system for perforation, formation testing and jet flow pump
11/26/2003CN1128648C Method and device for separation of fluidn in oil well
11/25/2003US6651748 Methods and apparatus for creating a downhole buoyant casing chamber
11/25/2003US6651747 Downhole anchoring tools conveyed by non-rigid carriers
11/25/2003US6651745 Subsea riser separator system
11/25/2003US6651742 Method and apparatus for enhancing oil recovery
11/25/2003US6651741 Method of increasing productivity of oil, gas and hydrogeological wells
11/25/2003US6651740 System for use in a subterranean environment to vent gas for improved production of a desired fluid
11/25/2003CA2280323C Assembly and method for the extraction of fluids from a drilled well within a geological formation
11/20/2003WO2003095795A1 Method and system for underground treatment of materials
11/20/2003WO2003095794A1 Multiple zone downhole intelligent flow control valve system and method for controlling commingling of flows from multiple zones
11/20/2003WO2003095793A1 Method of screen or pipe expansion downhole without addition of pipe at the surface
11/20/2003WO2003095788A1 Seafloor/surface connecting installation for a submarine pipeline which is connected to a riser by means of at least one elbow pipe element that is supported by a base
11/20/2003WO2003051546A3 Soil remediation well positioning in relation to curved obstructions
11/20/2003US20030215337 Wellbore pump
11/20/2003US20030213600 Latch profile installation in existing casing
11/20/2003US20030213595 Downhole tool deployment safety system and methods
11/20/2003US20030213594 In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
11/20/2003US20030213592 Method of producing hydrocarbon gas
11/20/2003US20030213590 Method and device for perforating a portion of casing in a reservoir
11/20/2003CA2484619A1 Method and system for underground treatment of materials
11/19/2003EP1362978A1 System for treating an underground formation
11/19/2003EP1362162A1 Fluid flow control apparatus
11/19/2003EP1362161A1 Seafloor-surface connecting installation of a submarine pipeline installed at great depth
11/19/2003EP0981679B1 Process for stimulation of oil wells
11/19/2003CN2586843Y Oil water well production tree clamp coupler
11/19/2003CN1457382A Fracturing different levels within completion interval of well
11/19/2003CN1456787A Chemical heat thickened oil recovering method
11/19/2003CN1456786A Oil sucking drive
11/19/2003CN1128291C Oil well wall and production thereof
11/19/2003CN1128006C Petroleum sulfonate surfactant, its preparation and use in third prdocution
11/18/2003US6648081 Subsea wellbore drilling system for reducing bottom hole pressure
11/18/2003US6648076 Gravel pack expanding valve
11/18/2003US6648075 Method and apparatus for expandable liner hanger with bypass
11/18/2003US6648074 Gimbaled table riser support system
11/18/2003US6648073 Retrievable sliding sleeve flow control valve for zonal isolation control system
11/18/2003US6648072 Method and apparatus for delivery of treatment chemicals to subterranean wells
11/18/2003US6648071 Apparatus comprising expandable bistable tubulars and methods for their use in wellbores
11/18/2003CA2307961C Methods for the in situ removal of a contaminant from soil
11/18/2003CA2267269C High density perforating gun system
1 ... 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 ... 642