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)
02/2003
02/27/2003WO2003016671A2 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
02/27/2003WO2003016669A2 Apparatus for radially expanding tubular members including a segmented expansion cone
02/27/2003WO2003015954A1 Apparatus for and a method of expanding tubulars
02/27/2003WO2003015947A1 Rehabilitation of landfill gas recovery wells
02/27/2003WO2003015911A1 Dynamic reduction of the moisture layer during the displacement of a viscoelastic fluid using a fluid with lower viscosity
02/27/2003WO2003015523A2 Methods for dewatering shaly subterranean formations
02/27/2003WO2003006778A8 Drilling system and method for controlling equivalent circulating density during drilling of wellbores
02/27/2003US20030040546 Viscoelastic surfactant fluids and related methods of use
02/27/2003US20030040441 Methods for dewatering shaly subterranean formations
02/27/2003US20030038734 Wireless reservoir production control
02/27/2003US20030037931 Expandable packer, and method for seating an expandable packer
02/27/2003US20030037929 Dual displacement pumping system suitable for fluid production from a well
02/27/2003US20030037928 Enhanced oil recovery
02/27/2003US20030037926 Method and apparatus for formation damage removal
02/27/2003US20030037925 Single trip horizontal gravel pack and stimulation system and method
02/27/2003US20030037923 Method of maintaining water volume in an oil strata of an oil production reservoir
02/27/2003US20030037920 Pad plunger assembly with concave pad subassembly
02/27/2003US20030037692 Use of aluminum in perforating and stimulating a subterranean formation and other engineering applications
02/27/2003CA2457075A1 Tertiary oil recovery combined with gas conversion process
02/27/2003CA2454865A1 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
02/26/2003EP1285147A1 Method of oil/gas well stimulation
02/26/2003EP1284800A1 A method and a system for separating a mixture
02/26/2003EP0646213B2 Process and tool for laying underground collector mains for liquids and gases
02/26/2003CN2537814Y Syphon type flow limited automatic chemical adding device
02/26/2003CN2537813Y Multifunction water injection well separate injector
02/26/2003CN2537812Y Curved slide beam composite tail beam sliding balance oil pumping unit
02/26/2003CN2537811Y Single crank energy saving oil pumping unit
02/26/2003CN1399058A Group well cracking controlled water-soluble recovery method for saline minerals bed
02/25/2003US6523613 Hydraulically actuated valve
02/25/2003US6523611 Apparatus for completing a subterranean well and method of using same
02/25/2003US6523610 Methods and apparatus for forming metal casings in well bores
02/25/2003US6523474 Shaped recesses in explosive carrier housings that provide for improved explosive performance
02/25/2003US6523449 Perforating gun
02/25/2003CA2238782C Method and apparatus for radially drilling through well casing and formation
02/25/2003CA2115368C Method for producing multiple fractures from a single workstring
02/20/2003WO2003015025A2 Apparatus, method and system for single well solution-mining
02/20/2003WO2003014524A1 Fracture closure pressure determination
02/20/2003WO2003014523A1 Method and apparatus for enhancing oil recovery
02/20/2003WO2003014522A1 In-situ evaporation
02/20/2003WO2003014521A1 Gravel packing apparatus and method with dual-wall screen
02/20/2003WO2002070339A3 System for lifting water from gas wells using a propellant
02/20/2003US20030034177 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
02/20/2003US20030034161 Pump control method and apparatus
02/20/2003US20030034160 Methods and apparatus for completing wells
02/20/2003US20030034158 Wellbore pump
02/19/2003EP1284336A1 Method and apparatus for completing wells
02/19/2003CN2536813Y High efficient large capacity sucker pump
02/19/2003CN2536812Y Piston structure of thick oil pump
02/19/2003CN2536787Y Hydraulic delayed explosion igniter for oil or gas well perforation
02/19/2003CN2536786Y Self-adjusting sandcontrol pipe
02/19/2003CN2536785Y Rotating rod pumping unit
02/19/2003CN1398321A Method for wave processing mainly productive strata
02/19/2003CN1397785A Autoamtic monitor method and device for safety of mining headframe
02/19/2003CN1397717A Hydraulic coal mining method without underground drilling
02/18/2003USRE37995 Progressive cavity pump with flexible coupling
02/18/2003US6520260 Well treatment tool and method of treating a well
02/18/2003US6520259 Method and apparatus for fluid entrainment
02/18/2003US6520258 Encapsulant providing structural support for explosives
02/18/2003US6520255 Method and apparatus for stimulation of multiple formation intervals
02/18/2003US6520254 Apparatus and method providing alternate fluid flowpath for gravel pack completion
02/17/2003CA2355500A1 Wellbore pump
02/14/2003CA2395721A1 Methods and apparatus for completing wells
02/13/2003WO2003012256A1 Compressor lift system for gas well produced liquids
02/13/2003WO2003012255A1 Completion apparatus and methods for use in wellbores
02/13/2003WO2003012254A1 Sintered wellscreen
02/13/2003WO2003012249A1 Device for the acoustic action on a oil and gas-bearing formation
02/13/2003WO2003012246A1 Centraliser for an expandable tubular element in a wellbore
02/13/2003WO2002097237B1 Method and apparatus for gravel packing a well
02/13/2003US20030029639 Perforating gun carriers and their methods of manufacture
02/13/2003US20030029621 Locking telescoping joint for use in a conduit connected to a wellhead
02/13/2003US20030029617 Apparatus, method and system for single well solution-mining
02/13/2003US20030029614 Apparatus and method for gravel packing
02/13/2003US20030029613 Apparatus and method for alternate path system
02/13/2003US20030029612 Method and apparatus for enhancing oil recovery
02/13/2003CA2453149A1 Centraliser for an expandable tubular element in a wellbore
02/12/2003EP1282760A1 A method of conducting in situ measurements of properties of a reservoir fluid
02/12/2003EP1282759A1 Liquid separation and extraction
02/12/2003EP1282732A1 Fluorescent monomers and tagged treatment polymers containing same for use in industrial water systems
02/12/2003EP1228311A4 A production system and method for producing fluids from a well
02/12/2003EP1073825B1 Foldable tube
02/12/2003EP0917616B1 Particle control screen assembly
02/12/2003CN2535558Y Under-pump liquid-mixing circulation oil-production apparatus for oil-pumping well
02/12/2003CN2535557Y Double-layer gun efficient windowmaker
02/12/2003CN2535556Y Double-layer laser kerf sand-proof tube for oil-well in oil-field
02/12/2003CN2535555Y Low-speed synchronous motor oil-pumping macine
02/12/2003CN2535554Y Independent-balancing linear motor oil-pumping machine
02/12/2003CN2535548Y Double-valve pressure difference water-filling expansion-packing packer
02/12/2003CN1396373A Oil-recovering technology and apparatus by means of multi-phase gas and steam generated by itself to displace oil
02/12/2003CN1396189A Aldehyde modified polymer and its preparation method and usage
02/11/2003US6516886 Well isolation system
02/11/2003US6516885 Reducing water flow
02/11/2003US6516882 Apparatus and method for gravel packing an interval of a wellbore
02/11/2003US6516881 Apparatus and method for gravel packing an interval of a wellbore
02/11/2003US6516879 Liquid level detection for artificial lift system control
02/11/2003US6516506 Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit
02/06/2003WO2003010415A1 Vertical flood for crude oil recovery
02/06/2003WO2003010414A1 Expander for expanding a tubular element
02/06/2003WO2002053867A3 Mono-diameter wellbore casing
02/06/2003WO2002041965A3 Combined degassing and flotation tank
02/06/2003WO2001079657A9 Debris catcher
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